A mass of 5 lb is acted upon by an upward force of 16 lb. the only additional force on the mass is the force of gravity. The acceleration is -29 ft/[tex]s^{2}[/tex], which is downward.
The net force on the 5 lb mass is equal to the difference between the upward force and the force of gravity. The force of gravity can be calculated as follows:
fgravity = m . g
where,
m = 5 lb (mass)
g = 32.2 ft/[tex]s^{2}[/tex] (acceleration due to gravity)
So,
fgravity = 5 lb * 32.2 ft/[tex]s^{2}[/tex] = 161 lb
The net force on the mass can then be calculated as follows:
fnet = fupward - fgravity = 16 lb - 161 lb = -145 lb
Since the net force is negative, it acts in the downward direction. To calculate the acceleration, we use Newton's second law of motion:
f = ma
where,
m = 5 lb (mass)
a = acceleration
Solving for acceleration, we get:
a = fnet / m = -145 lb / 5 lb = -29 ft/[tex]s^{2}[/tex]
So, the acceleration is -29 ft/[tex]s^{2}[/tex], which is downward.
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A marble is rolling at a velocity 100cm/sec with a momentum of 10,000 g-cm/sec. What is it’s mass?
Answer:
100g
Explanation:
Use the formula,
momentum = mass* velocity
Now substitute the respective values,
10,000g - cm/s = m * 100 cm/s
m = 10⁴ g-cm/s / 100 cm/s
m = 100g
And we are done!
a bicycle with 19-in.-diameter wheels has its gears set so that the chain has a 6-in. radius on the front sprocket and 4-in. radius on the rear sprocket. the cyclist pedals at 190 rpm. find the linear speed of the bicycle in in/min (correct to at least two decimal places)
The linear speed of the bicycle is approximately 14145.1 in./min if a bicycle with 19-in.-diameter wheels has its gears set so that the chain has a 6-in. radius on the front sprocket and 4-in. radius on the rear sprocket.
We can use the principle of similar triangles to find the linear speed of the bicycle.
Let's consider a single revolution of the front sprocket. During this revolution, the chain moves through an arc of 6 inches on the front sprocket and 4 inches on the rear sprocket. These two arcs form similar right triangles with the radius of the sprocket as the hypotenuse and half of the circumference of the sprocket as the other two sides.
So, the ratio of the length of the arcs is equal to the ratio of the radii of the sprockets:
Arc length on front sprocket / Arc length on rear sprocket = 6 in. / 4 in. = 3/2
Next, we can find the linear speed of the bicycle. We can start by finding the circumference of each wheel and then the linear speed of one revolution of the front sprocket.
Circumference of the front wheel = pi * 19 in. = 59.08 in.
Circumference of the rear wheel = pi * 19 in. = 59.08 in.
Linear speed of one revolution of the front sprocket = Circumference of the front wheel * Arc length on front sprocket / (2 * pi) = 59.08 in. * 6 in. / (2 * pi) = 74.49 in.
Finally, we can find the linear speed of the bicycle by multiplying the linear speed of one revolution of the front sprocket by the number of revolutions per minute made by the cyclist.
Linear speed of the bicycle = Linear speed of one revolution of the front sprocket * Cyclist's pedal rate (RPM) = 74.49 in. * 190 RPM = 14145.1 in./min
So, the linear speed of the bicycle is approximately 14145.1 in./min.
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according to newton's law of universal gravitation, if the moon were four times further from earth, the force by earth on the moon would:
According to Newton's Law of Universal Gravitation, if the Moon were four times further from Earth, the force by Earth on the Moon would be one-sixteenth (1/16) of the current gravitational force between the two bodies.
This is because the gravitational force between two objects is inversely proportional to the square of the distance between them. Therefore, as the distance between the Earth and the Moon increases, the gravitational force between them decreases.
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determine the moment of each of the three forces about point b MF1(B)=? MF2(B)=? MF3(B)=?
MF1(B)= 149.52 N - m, MF2(B)= 600 N - m, MF3(B)= ON - m.
Explain about force?
Force is a vector quantity that is defined as the rate of change of momentum of an object with respect to time. It is measured in Newtons (N) and is the product of mass and acceleration, according to Newton's second law of motion. Force can be applied by pushing, pulling, or twisting an object and can be used to create motion, stop motion, or change the direction of motion. Force can also influence the shape of an object through compression, tension, and shear.
(MF₁) B = F₁ cos 30° (3) – F₁ sin 30° (4)
= 250 cos 30° (3) — 250 sin 30° (4)
= 649.52 - 500
= 149.52 N - m
(MF₂) B = F₂ cos 60° (4) – F₂ sin 60° (0)
= 300 cos 60° (4) — 300 sin 60° (0)
= 600 - 0
= 600 N - m
As the force F3 passes through point B, moment of the force F3 about point B is zero.
(MF3)B = ON - m
Therefore, MF1(B)= 149.52 N - m, MF2(B)= 600 N - m, MF3(B)= ON - m is the answer.
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a 1500kg ferry boat has a momentum of 25000 kg-m/a. What is the speed of the ferry boat
The speed of the ferry boat is 16.67 meters per second.
The Pythagorean theorem is what?At a velocity of 10.0 m/s, the boat crossed the calm sea. Un = 2.00 m/s, river water speed Let v represent the ferry's effective river crossing speed, allowing it to travel directly to the location on the opposite side. We can then express their velocities as shown below.
What made Pythagoras well-known?Greek philosopher Pythagoras made significant contributions to mathematics, astronomy, and music theory. Although the Babylonians were aware of the theorem 1000 years before Pythagoras, he may be the first to use it.
We can use the formula for momentum:
p = mv
where p is momentum, m is mass, and v is velocity or speed.
Rearranging this formula to solve for velocity, we get:
v = p/m
Substituting the given values, we get:
v = 25000 kg-m/s / 1500 kg
v = 16.67 m/s
Therefore, the speed of the ferry boat is 16.67 meters per second.
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in parallel association, should the equivalent resistance be smaller or bigger than any individual resistor in the circuit? justify your answer.
The equivalent resistance is always less than the smallest resistor in the parallel network.
Then the inverse of the equivalent resistance of two or more resistors connected in parallel is the algebraic sum of the inverses of the individual resistances.
If the two resistances or impedances in parallel are equal and of the same value, then the total or equivalent resistance, [tex]R_t[/tex] is equal to half the value of one resistor. That is equal to R/2 and for three equal resistors in parallel, R/3, etc.
Note that the equivalent resistance is always less than the smallest resistor in the parallel network so the total resistance, [tex]R_t[/tex] will always decrease as additional parallel resistors are added.
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describe how you would use an uncalibrated force probe and the springs in question 1 to develop a quantitative
By using two known mass pans or objects, we can create the calibrated force probe using the uncalibrated force probe and springs that are already provided.
What occurs when an object is subjected to force from both sides?Newton's third law states that if object A exerts a force on object B, then object B must exert a force of equal size and in the opposite direction on object A. This law serves as an example of how forces always exist in pairs in nature and how no body can exert a force without also experiencing one.
What distinguishes a balanced force from an imbalanced force?When forces are balanced, they cancel one another out, causing the item they are acting on to remain in motion. conflicting forces don't cancel out each other and cause the thing they are acting on to modify its motion.
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g if you changed the source wavelength to a longer wavelength, e.g. 600nm, how would the distance between the zero order maximum and the third order maximum change?
There would be an increase in the maximum order.
How will the wavelength change?If you change the source wavelength to a longer wavelength, for example, from 500 nm to 600 nm, the distance between the zero order maximum and the third order maximum would increase.
The distance between the diffraction peaks in a diffraction grating is proportional to the wavelength of the light. As the wavelength increases, the distance between the diffraction peaks also increases. The diffraction peaks are also proportional to the order of the diffraction. Therefore, as the wavelength increases, the distance between the zero order maximum and the third order maximum also increases.
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Which phase of matter is made up of particles that are packed closely together, with both a definite shape and a definite volume?
A. Gas
B. Liquid
C. Plasma
D. Solid
The correct option is D. Solid phase of matter is made up of particles that are packed closely together, with both a definite shape and a definite volume.
In physics, a Solid is a state of matter characterized by its ability to maintain a fixed shape and volume when subjected to external forces. The particles in a solid are tightly packed together and have a fixed position relative to each other, giving the solid its rigidity.
Solids have a definite shape because their particles cannot move past one another, and they have a definite volume because the particles are tightly packed together. The properties of solids, such as density, thermal conductivity, and electrical conductivity, depending on the arrangement of their particles and the forces between them.
Solids can exist in different crystal structures, depending on the arrangement of their atoms or molecules. Examples of solids include metals, minerals, and rocks, as well as everyday objects such as tables, chairs, and buildings. Solids are important in many areas of physics, including materials science, condensed matter physics, and solid-state electronics.
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there is an electric space heater that operates at 120v. two heating elements are used with resistances r1 and r2. they can be operated in parallel, series, or separately. the highest power setting is 1440w and the lowest is 320w. what are the values of r1 and r2? what are the intermediate power settings?
The values of R1 = 11.27 ohms and R2 = 60 ohms. P = 201.6W In this way, by adjusting the configuration of the heating elements and the resistance values, a range of power settings can be achieved.
A) To determine the values for R1 and R2, we need to first find the maximum and minimum current values for the heating elements. We can use Ohm's law to calculate the current, I, in the circuit:
I = V / R, where V is the voltage and R is the resistance.
For the maximum power setting of 1280W, we have:
I_max = P_max / V = 1280W / 120V = 10.67A
For the minimum power setting of 240W, we have:
I_min = P_min / V = 240W / 120V = 2A
To calculate the resistance of each heating element, we can use Ohm's law again:
R = V / I
For R1, using the maximum current value:
R1 = V / I_max = 120V / 10.67A = 11.27 ohms
For R2, using the minimum current value:
R2 = V / I_min = 120V / 2A = 60 ohms
B) The intermediate power settings can be achieved by varying the resistance of the heating elements. By connecting the heating elements in series or parallel, the total resistance of the circuit can be adjusted, which will change the current in the circuit and thus the power.
For example, to achieve a power setting of 720W, we can connect the heating elements in series, which will give us a total resistance of 11.27 + 60 = 71.27 ohms. Using Ohm's law, we can then calculate the current:
I = V / (R1 + R2) = 120V / 71.27 ohms = 1.68A
And the power:
P = I × V = 1.68A × 120V = 201.6W
In this way, by adjusting the configuration of the heating elements and the resistance values, a range of power settings can be achieved.
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We are designing an electric space heater to operate from 120VDC. Two heating elements with resistance R1 and R2 are to beused that can be operated in parallel, seperately, or inseries. The highest power is to be 1280W, and the lowestpower is to be 240W. Draw a cicuit diagram.
A) What are the values needed for R1 and R2?
B) What intermediate power settings are available?
a student has built a 10-cm-long pinhole camera for a science-fair project. she wants to photograph her friend, who is 180 cm tall, and have the image on the film be 5 cm high. how far should the front of the camera be from her friend
The distance between both the student's friend and camera is d = 360 cm or 3.6 m.
What is the structure of light?Light not only moves in waves; it also moves with a flow of small particles. Scientists call these tiny particles of light as photons. The packets contain the energy which makes up the energy of the light. The scientists measure something called the relative energy for different types of light.
The light traveling in any one direction in a straight line is called a ray of light. Meanwhile, a group of light rays given out from a source is called a beam of light.
In this case, camera’s height was 10 cm.
The height of student's friend was 180 cm.
That picture on camera has a length of 5 cm.
Now, let d represent the space among both the friend and device's face. Its identical triangles as in figure attached show how the lengths were connected.
So, to find out the distance, we can use the following equation:
5 cm / 10 cm = 180 cm / d
d = 10 cm * 180 cm / 5 cm
d = 360 cm
d = 3.6 m
Hence, the distance among both the friend and device's face is 360 cm or 3.6 m.
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20 points !! An ultraviolet wave from the Sun traveling at the speed of light has a wavelength of 3 × 10−8m. Calculate the frequency of this wave.
Answer:
[tex]1.0 \times 10 {}^{16} per \: second[/tex]
or simply
1.0×10¹⁶/sExplanation:
Greetings !!
Given values :-speed of light= 3×10⁸
wavelength= 3×10-⁸
required value :-frequency= ?
solution:-Firstly, recall the velocity-wavelenght equation
V=f λSubstitute known variables into the equation
(3×10⁸) = f(3×10-⁸)Solve for frequency
f= 1.0×10¹⁶/s.If you have any questions or unclear ideas tag on comment box
Hope it helps!!!
Similarities and differences between thermionic emission and liquid evaporation
There are both similarities and differences between thermionic emission and liquid evaporation elaborated below.
Vapourization is the process by which the liquid state transforms into the vapour state, and thermonic emission is the thermally induced inflow of charge carriers.
The thermally convinced ingress of charge carriers from a face or over an implicit-energy barrier is known as thermionic emission. This happens because, as we are aware, the thermal energy applied to the carrier overrides the material's ability to perform its intended function.
The process through which a liquid transforms into a gas is known as vaporisation. The molecules' kinetic energy increases along with the temperature. The force of attraction between the molecules weakens as a result of this increase in kinetic energy, allowing them to escape into the environment as vapours.
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what is the angular momentum of a thin loop of radius 2m and mass 1 kg, rotating at a velocity of 4 rad/s?
The angular momentum of a thin loop of radius 2m and mass 1 kg, rotating at a velocity of 4 rad/s is 8 kg·rad/s
What is angular momentum?
The rotational equivalent of linear momentum is angular momentum, often known as moment of momentum or rotational momentum. It is a conserved quantity, meaning that the total angular momentum of a closed system stays constant, making it a significant physical quantity. Both the direction and the amplitude of the angular momentum are always conserved. The functional characteristics of motorbikes, frisbees, bullets, and gyroscopes are due to the conservation of angular momentum.Angular momentum conservation also explains why storms occur.Given : m=1 kg w=4 rad/s r=2 mm
So, angular momentum L=mwr
⟹ L=1×4×2
= 8 kg rad /s
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can the internal forces within a soccer ball produce an impulse on the soccer ball to change its momentum why or why not
The internal forces within a soccer ball can produce an impulse on the soccer ball to change its momentum. When the ball is struck by a player's foot, the internal forces within the ball cause it to compress and rebound.
What is the compress ?Compression is the process of reducing the size of a file or data set by encoding information using fewer bits. It is used to reduce the amount of data sent over a network or stored on a hard drive. Compression is generally done by compressing data into smaller data sets, which are then decompressed when needed. Compression can also be used to reduce the size of images, allowing them to be stored or transmitted more quickly. Compression algorithms such as lossless and loss can also be used to reduce the amount of data loss when transmitting or storing data.
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a block weighing 55 lb is being pushed by a 13 lb force on a smooth surface. determine the acceleration of the block rounded to three significant figures.
On a flat surface, a 55 kg block is being dragged by something like a 13 lb force. The block accelerates at a rate of 7.64 feet per second.
What are example and force?As a response, the body's motion, shape, height, etc., could also alter. An alternative would be to firmly push or shove a door. Force is a vector quantity, hence it has a magnitude and direction. According to Newton's second law, pressure is the "service offering of a body's normal and acceleration."
What characteristics does force have?Therefore, the characteristics of columns of force are just that they begin at a positively charged ions and end at a negative charge, never cross, are proportionate to charge, and cannot pass through a conductor.
W = 55lb
m = w/g
g = 32.18 ft/s2
= 55/ 32.18
= 1.70 lbm
F = 13 lb
F = ma
13 = 1.70 * a
a = 7.64 ft/s2
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Activity 3 A driver parked his car in the open on a hot day because he wanted to go for lunch in a small town A man in the tow. advised the driver to park the car under a tree shade but the driver refused. Task: Prepare a comprehensive message with reasons that would convince the driver to pack the car under the shade.
Answer:
Dear driver,
I hope this message finds you well. I am writing to you today because I noticed that you have parked your car in the open on this hot day. I understand that you are planning to go for lunch in the town, but I would like to respectfully offer you some advice.
I strongly recommend that you park your car under the shade of a tree. There are several reasons for this that I would like to share with you. Firstly, parking your car in direct sunlight can cause the interior to become extremely hot and uncomfortable, which can make it difficult to get back into your vehicle after lunch. This can also cause the steering wheel and other interior surfaces to become too hot to touch, which can be dangerous.
Furthermore, parking your car in direct sunlight can also have a negative impact on the health of your car. The intense heat can cause the dashboard, upholstery, and other materials to fade and deteriorate over time. It can also increase the risk of interior damage from sun exposure and make the car look older than it actually is.
Finally, parking under the shade of a tree will help to keep your car cooler, which can make it more comfortable for you to get back into and drive when you are ready to leave. This can also help to extend the life of your car and maintain its appearance.
I hope that these reasons have convinced you to park your car under the shade of a tree during your time in the town. If you have any further questions or concerns, please don't hesitate to reach out to me.
Thank you for your time and consideration.
Explanation:
A weight hangs motionless from a spring, with a spring constant of 75 N/m. The spring stretched from its original length by 0.333 meters. How much weight hangs from the spring?
Group of answer choices
15 N
45 N
35 N
25 N
Answer:
25 N
Explanation:
You can just observe the units of the numbers given to know that
75 N/m * .333 m = 25 N
The asteroid or comet that killed the dinosaurs was probably about how large in diameter?
Thought to have been between 10 and 15 kilometers broad, the asteroid's speed during the encounter created the second-largest crater on the planet, which is now 150 kilometers in diameter.
Large, stony rocks called asteroids orbit the Sun. Their diameter ranges from a few to several hundred meters. A meteorite is any piece of an asteroid that survives impact with our planet. The most widely recognized idea for the catastrophic extinction at the end of the Mesozoic Era is the Alvarez hypothesis, which at first caused controversy.
Paul asserts, "Since we've located the crater, we have pretty strong evidence supporting an asteroid impact. It is currently mostly submerged on the ocean floor off the coast of Mexico.
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A vector is represented by a(n)………?
Answer:
An Alphabet with an arrow on top
Explanation:
Vectors are denoted by alphabets in boldface or alphabets with arrows above them
A steel wrecking ball is moving with 30,000 J of kinetic energy. The ball collides witha spring and comes to a complete stop. If the spring has a k = 50,000 N/m how much is the spring compressed?
Answer:
1.02 m
Explanation:
We are here given that ,
Kinetic energy= 30,000 J spring constant= 50,000N/mWe need to find out the compression in the spring. As we know that,
[tex]\longrightarrow E = \dfrac{1}{2}kx^2 \\[/tex]
where [tex]x[/tex] is the compression in the spring. So that,
[tex]\longrightarrow 30,000 J = \dfrac{1}{2}\times 50,000 \times x^2 \\[/tex]
[tex]\longrightarrow x^2=\dfrac{60,000}{50,000} \\[/tex]
[tex]\longrightarrow x^2=\dfrac{6}{5}= 1.2m^2\\[/tex]
[tex]\longrightarrow x=\sqrt{1.2} m \\[/tex]
[tex]\longrightarrow \underline{\underline{ x \approx 1.02 \ m }} \\[/tex]
and we are done!
reflects from the mirror, and reaches point b. how far below the top edge does the ray strike the mirror?
The distance below the top edge at which the ray strikes the mirror depends on the angle of incidence.
What is ray strikes?Ray tracing is a computer graphics rendering technique for generating an image by tracing the path of light as it interacts with an object or scene. Ray tracing is capable of producing a very high degree of visual realism, including effects like reflections, refractions, and shadows.
The distance below the top edge at which the ray strikes the mirror depends on the angle of incidence. The angle of incidence is the angle between the incident ray and the normal to the mirror surface. The distance below the top edge can be found using the law of reflection which states that the angle of incidence is equal to the angle of reflection. If we denote the angle of incidence as θ and the distance below the top edge as h, then we can calculate h using the tangent of θ.
h = tan(θ) * distance from point a to the top edge of the mirror
Therefore, the distance below the top edge at which the ray strikes the mirror depends on the angle of incidence.
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why might the unemploymeht rate cometimes increase when the pace of job creation exceeds the increase in population
The unemployment rate is a measure of the percentage of the labor force that is currently unemployed and actively seeking employment. When the pace of job creation exceeds the increase in population, it would be expected that the unemployment rate should decrease, as there are more job opportunities available for job seekers.
It's important to note that unemployment rates are often subject to seasonal fluctuations, with certain times of the year seeing more job losses than others. For example, there may be a decrease in employment in certain industries during the winter months, or during the summer months when school is out. These seasonal fluctuations can lead to temporary increases in unemployment rates, even if job creation is occurring.
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2. a solid conducting sphere (or any shaped conductor), charged either positively or negatively, has no electric field inside it. how is this so?
It has a consistent distribution of the charges in a solid conducting sphere (or any shaped conductor), charged either positively or negatively, has no electric field inside it.
When retained in an electric or magnetic field, the basic physical characteristic of matter, electric charge, produces a force. A moving electric charge creates a magnetic field, and an electric charge is related with an electric field. Magnetic and electric fields combine to form the electromagnetic field. The interaction of the charges results in the electromagnetic force, which is the fundamental force in physics. Tell us about electric charges, their varieties, and their characteristics throughout this session. A scalar quantity is an electric charge. In addition to having a magnitude and direction, a quantity must also abide by the laws of vector addition, such as the parallelogram law of vector addition and the triangle law of vector addition. The quantity is only referred to as a vector quantity after vector addition.
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If a nearsighted person has a far point df that is 3. 50m from the eye, what is the focal length f1 of the contact lenses that the person would need to see an object at infinity clearly? Express your answer in meters. If a farsighted person has a near point that is 0. 600m from the eye, what is the focal length f2 of the contact lenses that the person would need to be able to read a book held at 0. 350m from the person's eyes? Express your answer in meters
(-3.5 m) (-0.22man) The focal length f1 of the lenses contacts infinity clearly if a nearsighted person has a distant point df that is 3. 50 m from the eye.
What is focal distance vs focal length?The focal length of a lens, when focussed at infinity, is the distance between its rear nodal point and the focusing plane (where the camera's sensor is located). This is a characteristic of the lens that controls both the angle of vision and the perspective.
The focal length is the distance from the principal focus to the concave lens' optical centre.
The magnification at which a lens pictures far-off objects depends on its focal length. It is equivalent to the separation between the image plane and a pinhole that can capture distant objects that are the same size as the target lens.
Therefore, The sign convention dictates that the focal length of a concave lens always is negative.
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germanium is a matalloid. this means it has the same properties as a_ and a_
Germanium is a metalloid. this means it has the same properties as a metal and a nonmetal.
What is metalloid?In chemistry, a chemical element that forms a simple substance with properties in-between those of a conventional metal and a typical nonmetal is referred to as a metalloid.
The name is typically used to describe a collection of six to nine elements (boron, silicon, germanium, arsenic, antimony, tellurium, and maybe bismuth, polonium, and astatine) that can be found close to the main block of the periodic table, also known as the P-block.
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suppose that 2 j of work are needed to stretch a spring from its natural length of 30 cm to a length of 42 cm. how much work (in j) is needed to stretch it from 35 cm to 40 cm?
The work needed to stretch the spring from 35 cm to 40 cm is 0.35 Joule. The result is obtained by using the formula for potential energy of a spring.
How to count the potential energy of a spring?The potential energy can be expressed as
P.E = ½kx²
Where
k = spring constantx = spring displacementSuppose that 2 J of work are needed to stretch a spring from its natural length of 30 cm to a length of 42 cm. Find work (in Joule) is needed to stretch it from 35 cm to 40 cm!
We have P.E₁ = 2 J when
x₁ = (42 - 30) cm
x₁ = 12 cm
x₁ = 0.12 m
The spring constant is
P.E₁ = ½kx₁²
2 = ½k(0.12)²
4 = 0.0144k
k = 277.77
k ≈ 278 N/m²
When it stretches for
x₂ = (40 - 35) cm
x₂ = 5 cm
x₂ = 0.05 m
The work needed will be
P.E₂ = ½kx₂²
P.E₂ = ½(278)(0.05)²
P.E₂ = 139(0.0025)
P.E₂ = 0.35 Joule
Hence, to stretch it from 35 cm to 40 cm, the work needed is 0.35 Joule.
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how does a simple cell work
Answer:
A simple cell can be made by connecting two different metals in contact with an electrolyte
as the sun angle , the amount of energy reaching the surface . question 16 options: increases; decreases increases or decreases; remains constant increases; increases decreases; increases
As the sun angle decreases, the amount of energy reaching the surface decreases.
The sun angle refers to the angle between the sun and the horizontal surface. The higher the sun angle, the more direct the sun's rays are reaching the surface, which results in a higher amount of energy.
On the other hand, when the sun angle is lower, the sun's rays are more spread out and less direct, leading to a decrease in the amount of energy reaching the surface.
Additionally, the sun angle changes throughout the day as the earth rotates and also changes seasonally as the earth orbits the sun. Understanding the relationship between the sun angle and the amount of energy reaching the surface is important for various applications, including solar energy generation and building design to optimize energy use.
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Your question seems incomplete, but I suppose the question was:
"as the sun angle _______, the amount of energy reaching the surface ______.
question options: increases; decreases increases or decreases; remains constant increases; increases decreases; increases."
A rhinoceros is at the origin of coordinates at time t1=0. For the time interval from t1 to t2= 10.0s, the rhino's average velocity has x-component -3.20 m/s and y-component 5.40 m/s.
*At time t2=10.0s what is the x-coordinate of the rhino?
*At time t1=10.0s what is the y-coordinate of the rhino?
*How far is the rhino from the origin?
At t2=10.0s, the x-coordinate of the rhino is -32 and at time t1=10, the y-coordinate of the rhino is 64.8m. The rhino is 72.27 m.
Given:
x-component of avg. velocity is 3.20 m/s.
x-component of avg. velocity 5.40 m/s.
initial position of rhino, (x1,y1)= (0,0)
initial time, t1=0s
final time, t2=12s
a) As we know that average velocity is total displacement per unit time.
Position of x-coordinate of the rhino:
Vx= x2/t2
-3.20= x2/10
x2= -32m
Position of y-coordinate of the rhino:
Vy= y2/t2
5.40= y2/12
y2= 64.8 m
Now the distance from the origin:
s=[tex]\sqrt{x2^{2} +y2^{2} }[/tex]
s=[tex]\sqrt{(-32)^{2} } + (64.8)^{2} \\[/tex]
s=[tex]\sqrt{1024}+ 4199.04[/tex]
s=72.27 m
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