"An electron beam is aimed at two closely spaced slits. The beam is attenuated to produce only one electron per minute is known as interference pattern." The answer is yes.
When an electron beam is aimed at two closely spaced slits, the electrons passing through the slits will interfere with each other, producing an interference pattern on a screen behind the slits. The interference pattern will be a series of bright and dark bands, where the bright bands correspond to constructive interference and the dark bands correspond to destructive interference.
When a beam of electrons is passed through two closely spaced slits, it creates an interference pattern on a screen behind the slits. This pattern results from the wave-like behaviour of electrons and the interference between the electrons passing through the two slits. The pattern appears as a series of bright and dark bands, where the position and intensity of the bands are determined by the relative phase of the electrons.
The interference pattern only becomes noticeable with a large number of electrons passing through the slits at the same time. If only one electron is passing through the slits per minute, the pattern will not be easily observable.
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A person yelling is a transformation of what energy
Answer: force
Explanation:
what type of weather do cold fronts usually bring?
Cold fronts bring cooler weather, clearing skies and sharp change in wind direction.
What type of weather does cold fronts bring?In the winter, cold fronts bring cold spells and sometimes snow. In the spring or summer, in temperate latitudes, hail may fall along with the rain. If moisture is not sufficient, such as when the system has previously moved across the mountain barrier, then cold fronts can pass without cloudiness.
Cold front is generally associated with stormy weather. Cold front often brings intense weather changes such as thunderstorms whereas a warm front brings light rain or drizzle.
With cold front, cold air advances and displaces warm air as cold air is more dense than warm air.
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how is positive feedback supplied in a colpitts oscillator?
In a Colpitts oscillator, positive feedback is supplied by the capacitive divider formed by two capacitors connected in series between the collector and the emitter of the transistor.
What is the capacitors ?A capacitor is an electrical component that consists of two conductive plates separated by an insulating material known as a dielectric. The capacitor stores electrical energy in the form of an electrostatic field between the two plates. When a potential difference is applied between the plates, it creates an electric field which can store energy.
The output of the oscillator (the collector voltage) is fed back to the base of the transistor via the capacitive divider. As the collector voltage increases, the voltage across the two capacitors increases, which increases the base current of the transistor, further increasing the collector voltage and thus providing positive feedback.
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If you are told that an object that weighs 20 Newtons is raised a distance of 10 meters, you know that. O A the force of gravity on the object is 20 Newtons. O B the mass of the object is 20 Newtons. O C the force of gravity on the object is 10 meters. O D the mass of the object is 10 meters. E the acceleration of the object is 200 kilogram-meters.
Answer:
A
Explanation:
A) Force of gravity is 20 N Yes - Force is measured in N
B) No.....mass is generaly measured in KG or sub units of it
C) No ... meters is a measure of distance not force
D) No acceleration is m/s^2
Which of the following are density labels?
g/mL
kg/L
cm^3/g
g/m
Answer:
Below
Explanation:
Density is mass / volume so any of these that have numerator mass and denominator volume qualify
g/ ml and kg/ L are the only ones
if you are told that a 20 kilogram object is raised by 10 meters, you know that
It has 10,000 joules of potential energy.
What is potential energy?Potential energy is the energy stored in an object due to its position or configuration. This type of energy is due to the force of gravity and is determined by the mass of the object, the height it is raised, and the acceleration due to gravity.
In this case, the object has a mass of 20 kilograms and is raised by 10 meters. The acceleration due to gravity is 9.8 m/s2. When the object is raised, it gains 10,000 joules of potential energy, which can be calculated using the equation: PE = mgh, where m is the mass of the object, g is the acceleration due to gravity, and h is the height the object is raised. Thus, in this example, PE = (20 kg)(9.8 m/s2)(10 m) = 19,600 joules.
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The energy required for the phase change from solid to liquid for a substance is known as the heat of _____.
a.) vaporization
b.) sublimation
c.) fusion
d.) fission
e.) condensation
Phase Change
When a substance changes from one state of matter to another it is called a phase change. Common endothermic phase changes are melting, vaporization, and sublimation. Common exothermic phase changes are freezing, condensation, and deposition.
The energy required for the phase change from solid to liquid for a substance is known as the heat of fusion (C)
The amount of energy that must be supplied to a solid substance (usually in the form of heat) in order to cause a change in the substance's physical state and convert it into a liquid is referred to as the latent heat of fusion, which is also known as the enthalpy of fusion (when the pressure of the environment is kept constant). Because of the usage of this energy in the process of counteracting the attractive force that exists between the molecules, the kinetic energy of the particles does not increase, and as a result, the temperature does not go up.
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A man walking at 3. 56 m/s accelerates at 2. 50 m/s2 for 9. 28 s. How far does he get?.
The total distance traveled by the car when accelerating at a rate of 3. [tex]56 m/s^3[/tex] is 11.2 meters.
What is acceleration?Acceleration is the rate at which an object's velocity with respect to time changes. Acceleration is defined as a change in velocity over time. It is the pace at which the speed or direction of an item changes. It is determined using the formula a = (vf - vi)/t, where vf is the end velocity, vi is the beginning velocity, and t is the time period. Acceleration can be induced by a force such as gravity or by the motion of an item itself, such as when an automobile accelerates.
In the given question, the man will get a total distance of 40.1 meters.
This is calculated by using the equation d = v0t + 1/2[tex]at^{2}[/tex],
where v0 is the initial velocity (3.56 m/s), a is the acceleration (2.50 m/[tex]s^{2}[/tex]), and t is the time (9.28 s).
Plugging in these values, we get d = 3.56*9.28 + 0.5*2.50*[tex](9.28)^{2}[/tex] = 40.1 meters.
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A radar gun was used to record the speed of a runner during the first 5 seconds of a race (see table). Use simpson's rule to estimate the distance the runner covered during those 5 seconds.
The distance covered by the runner in 5 seconds can be estimated to be 108 meters, using Simpson's rule.
What is distance?Distance is a measure of the amount of space between two objects or points. It can be measured in a variety of ways, including linear, angular, and temporal distance. Distance is an important concept in physics, mathematics, and other sciences. It is used to describe the magnitude of physical phenomena, such as the speed of light or the force of gravity. It can also be used to measure the distance between two points in space or between two points in time. Distance is also used in everyday life to describe the amount of separation between two people or locations.
Simpson's rule is a numerical integration method used to approximate the definite integral of a function. It is based on the idea that the integral of a function can be approximated by dividing it into a series of trapezoids and evaluating the area of each trapezoid. To use Simpson's rule to calculate the distance covered by a runner in 5 seconds, we need to calculate the area under the curve of the speed-time graph.
The first step is to calculate the area of the trapezoids. We can do this by taking the average of the two endpoints of each trapezoid and multiplying it by the width of the trapezoid. The width of each trapezoid is the difference between the x-values of the two endpoints. The area of each trapezoid can be calculated using the following formula:
Area = (Average of the two endpoints) × (width of the trapezoid)
Once the area of each trapezoid is calculated, we can add them all together to get the total area under the curve. This total area is the distance covered by the runner in 5 seconds.
For example, using the data from the table, we can calculate the area of the first trapezoid as follows:
Area = (8 + 10)/2 × (1) = 9
The total area under the curve is then calculated by adding the areas of all the trapezoids together:
Total area = 9 + 18 + 24 + 27 + 30 = 108
Therefore, the distance covered by the runner in 5 seconds can be estimated to be 108 meters, using Simpson's rule.
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Can someone help with questions 1&2 please
1. After 10 iterations, we would have:
f^10(1) = 2^10•1 = 1024
2. The value of f^n(-1) will become more and more negative without bound.
How did we arrive at this assertion?1. As the number of iterations grows, the numbers will grow at an exponential rate. Specifically, each iteration doubles the value of the previous iteration. So after 10 iterations, we would have:
f^10(1) = 2^10•1 = 1024
2. If we repeat the process with an initial value of -1, we get:
• f(-1) = 2•(-1) = -2
• f²(-1) = 2•(-2) = -4
• f³(-1) = 2•(-4) = -8
We can see that the numbers are becoming increasingly negative as the iterations progress. In fact, we can prove that the function will approach negative infinity as the number of iterations grows. To see this, we can use the formula for the nth iteration of f:
f^n(-1) = 2^n•(-1)
As n gets larger and larger, 2^n grows at an exponential rate, while (-1) remains constant. Since the exponential growth dominates, the value of f^n(-1) will become more and more negative without bound.
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a student completes a pet experiment using chloroplasts from leaves lacking pigments that absorb in the 550 nm to 600 nm wavelength range. which color of light should they avoid in their experiment if they want to measure activity at different wavelengths?
a. Blue
b. Orange
c. Yellow
d. Red
e. violet
The student should avoid using light in the range of 550 nm to 600 nm in their experiment because these are the wavelengths of light that are typically absorbed by chlorophylls in green plants, and the chloroplasts that were used in the experiment lacked pigments that absorb in this range. Here option B is the correct answer.
To measure the activity of the chloroplasts at different wavelengths, the student needs to use a broad range of light wavelengths and avoid using a specific wavelength of light that the chloroplasts cannot absorb.
Of the options given, red light (which has a wavelength range of 620 nm to 750 nm) would be the best choice to avoid in the experiment. This is because red light is absorbed strongly by chlorophyll a and b, which are the primary pigments involved in photosynthesis, and it may interfere with the measurement of activity at other wavelengths.
On the other hand, blue, orange, yellow, and violet light are not strongly absorbed by chlorophylls and can be used in the experiment to measure activity at different wavelengths.
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An electron traveling horizontally enters a region where a uniform electric field is directed upward. What is the direction of the force exerted on the electron once it has entered the field?.
It moves downward. An electron moving horizontally passes between two horizontal plates, the upper charged negatively, the lower positively. A uniform, upward-directed electric field exist in the region between the plates, and this field exert an electric force downward on the electron.
What is an electron?Electrons are involved in gravitational, electromagnetic, and weak interactions, as well as many other physical phenomena, including electricity, magnetism, chemistry, and thermal conductivity.
Since an electron has charge, it has an electric field surrounding it. If the electron is moving in relation to the observer, the observer will track the electron and produce a magnetic field.
According to the Lorentz force law, an electron's velocity will be impacted by electromagnetic fields created by external sources.
When accelerated, electrons emit or take in energy in the form of photons.
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Crane takes 2. 0 minutes to lift a load to the top of a building. The change in gravitati potential energy of the load is 720 kj. What is the useful power output of the crane?.
6kW is the useful power output of the crane.
Define power.
Energy consumption per second is measured as power. The amount of force necessary to create a unit displacement is another way to quantify power. Power, a scalar quantity, is represented by the letter P. For instance, a light bulb with 100 W of electricity will provide more light than one with 10 W.
The power in a circuit is measured using electrical power, which is given in watts. Electrical and mechanical-electrical techniques are used to measure electrical power in centrifugal pump applications. A watt, which represents power, is equivalent to one joule every second.
Power = Work done /Time taken
Time = 2 minutes = 120 seconds.
Work = 720kJ = 720000J
Power = 720000/120 = 6000W
P = 6kW
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When you speak, your voice sounds 10 dB louder to someone standing directly in front of you than to someone at the same distance but directly behind you. What is the ratio of the intensity of your voice for someone in front of you to the intensity for someone behind you?
The ratio of the intensity of voice for someone standing in front of the person to the intensity for someone standing behind is 10:1
What is intensity ?Intensity is a physical quantity that measures the amount of energy that flows through a given area per unit of time. In the context of sound waves, intensity refers to the amount of energy carried by sound waves per unit of time and per unit of area. It is related to the amplitude (or height) of the sound waves, which determines how much the pressure varies in the medium through which the waves travel. The unit of intensity is watts per square meter (W/m^2). The intensity of sound waves is important in many applications, such as in measuring the loudness of sounds, determining safe exposure levels to noise, and designing acoustic systems.
The difference in the sound level in decibels (dB) between two positions can be calculated using the following formula:
ΔL = 10 log10(I2/I1)
where ΔL is the difference in dB, I1 is the intensity at the first position, and I2 is the intensity at the second position.
In this case, the sound level is 10 dB higher is known for someone standing directly in front than for someone at the same distance but directly behind you. Using this information to set up the following equation:
10 dB = 10 log10(I_front/I_back)
where I_front is the intensity of voice for someone standing in front and I_back is the intensity of voice for someone standing behind
We can simplify this equation by dividing both sides by 10:
1 dB = log10(I_front/I_back)
Now, raise both sides of the equation to the power of 10:
10^1 = I_front/I_back
Simplifying this expression
I_front/I_back = 10
So the ratio of the intensity of your voice for someone standing in front of you to the intensity for someone standing behind you is 10:1. In other words, your voice is 10 times louder for someone standing directly in front of you than for someone at the same distance but directly behind you.
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a car starts from rest on a curve with a radius of 130 m and tangential acceleration of 1.3 m/s2 . Through what angle will the car have traveled when the magnitude of its total acceleration is 2.6 m/s2?
The car will have traveled through an angle of approximately 119.7 degrees when the magnitude of its total acceleration is 2.6 m/s^2.
What is the angle of approximate calculation?
The magnitude of the total acceleration of a car on a curved path can be given by:
a = √(at^2 + ac^2)
where at is the tangential acceleration (1.3 m/s^2), and ac is the centripetal acceleration, which is given by:
ac = v^2 / r
where v is the velocity of the car and r is the radius of the curve (130 m).
Setting a = 2.6 m/s^2, we can solve for v:
v = √(r * a^2 - at^2) = √(130 * 2.6^2 - 1.3^2) = 27.47 m/s
The angle through which the car will have traveled can be found using the equation for the arc length s:
s = r * θ
where θ is the angle in radians. Substituting the values for v and t into the equation for s, we can solve for θ:
θ = s / r = v * t / r
Since the car started from rest, t can be found from the equation for acceleration:
at = v / t
t = v / at = 27.47 / 1.3 = 21.06 s
Finally, substituting t into the equation for θ, we get:
θ = v * t / r = 27.47 * 21.06 / 130 = 2.07 radians = 119.7 degrees
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.
What is st segment depression ?
An electrocardiogram (ECG) result called ST segment depression suggests a problem with the electrical activity of the heart.
The ECG's ST segment is a section that shows the beginning of ventricular repolarization. The ST segment is typically flat or just slightly raised in healthy people.
Nonetheless, there can be a reduction in blood supply to the heart tissue, for instance during an angina episode or a heart attack, which can result in ST segment depression.
Additional factors that contribute to ST segment melancholy include drug interactions, electrolyte imbalances, and other cardiac problems. Doctors can establish the proper therapy and the underlying reason by looking at the intensity and location of the ST segment depression.
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Mia is holding a 20 N weight without moving. How much work is she doing?
Which is the thickest layer of earth ? a. Crush b. Mantle c. Core d. Ocean
The thickest layer of the earth is the mantle. Option b is correct answer.
The mantle is the layer between the crust and the core, and it makes up about 84% of the earth's total volume. It has a thickness of about 2,900 km, making it much thicker than the crust, which has an average thickness of about 35 km, and the core, which has a radius of about 3,485 km.
The mantle is composed of solid rock that is subject to intense heat and pressure, which causes it to flow like a viscous liquid over very long periods of time. It is divided into the upper and lower mantle, and it plays a crucial role in the movement of tectonic plates and the formation of volcanic activity. Therefore, option b is correct.
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A 16-g ball at the end of a 1. 4-m string is swung in a horizontal circle. It revolves once every 1. 09 s. What is the magnitude of the string's tension?.
The stress exerted on the string as it swings in a horizontal circle is 6.56 Newton. frequency is 1/1.09 = 0.92 Hz, and f is 1. (2L) × √T/m\s0.92 = 1/2(1.4) (1.4) (T)/4 multiply everything by 4 ((T/16) 0.92 = 0.36)
3.68 = 1.44 × √T \s √T = 3.68/1.44 = 2.56 \s T = 2.56² = 6.56
Describe a magnitude example."How much of a quantity" is how the word "magnitude" is defined. The magnitude, for instance, can be used to describe a comparison of the speeds of a car and a bicycle. Additionally, it can be used to describe how far an object has traveled or how much of an object is represented by its magnitude.
Are size advantages?The energy released at the earthquake's epicenter is measured in magnitude. Seismograph readings are used to calculate magnitude. The magnitude of the shaking caused by an earthquake is measured by its intensity. The impact on humans is used to gauge intensity.
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A.
B.
C.
D.
E.
F.
G.
H.
Answer:
झझकोर देने की कोशिश की है और यह बात उस समय की है जब कुंवर जी के लिए एक ही है कि वह इस बात को भी नहीं
A car of mass 1000 kg is moving at a speed of 90 km h–1. Brakes are applied and the car stops at a distance of 15 m from the braking point. If the car stops in 25 s after braking, calculate the average power of the brakes?
Answer:
Pavg =24.4×20800
Explanation:
1st u(initial velocity)=90×5/18=25m/s
v^2-u^2=2as........v=0
a=-20.8 then force=ma =1000×(-20.8)=-20800
P initial=f×u and P final=f×s/t
Pavg=Pi-Pf=fu-fs/t=f(25-15/25)=f(25-0.6)
Pavg=20800×24.4
What does the change in the period with respect to the eccentricity tell you about the dependence of the period on the eccentricity?
What does the shift in the period's relationship to its eccentricity reveal about the period's reliance on the eccentricity The duration is independent of eccentricity.
How is an ellipse's eccentricity determined?
Weirdness e = c/a if the focus's distance from the ellipse's center is "c" and the tip of the ellipse's distance from the central is "a." E = 1 b 2 a 2 is another formula to get the eccentricity of an ellipse.
What does geometric eccentricity mean?
The term "eccentricity" is defined in terms of the fixed-point known as focus as well as the fixed-line known as the perpendicular line in the plane. The definition of eccentricity in geometry, the eccentricity formula, and the eccentric of several conic sections, including parabola, ellipse, and hyperbola, will all be covered in detail in this article along with worked-out examples.
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a boy on a skateboard pushes off the ground with his foot. he and the skateboard accelerate down the sidewalk due to the force
A boy on a skateboard pushes off the ground with his foot. he and the skateboard accelerate down the sidewalk due to the force on the ground in one direction.
The ground applies an equal and opposite force on the boy in the opposite direction. This force causes the boy and the skateboard to accelerate forward.
According to Newton's second law of motion, the acceleration of an object is directly proportional to the force applied to it and inversely proportional to its mass.
Therefore, the acceleration of the boy and the skateboard will depend on the force applied by the boy's foot and the combined mass of the boy and the skateboard.
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A ball is launched horizontally off a platform at 15 m/s. The ball takes 1 second to
hit the ground. The height of the platform is
m. The ball will
land
m. from the base of the platform.
Answer:
Below
Explanation:
The ball has one second to fall from its height and to travel horizontally at 15 m/s
Rate X Time = distance 15 m/s * 1 s = 15 meters from the platform .
df = do + vot + 1/2 a t^2
df = final position = o ft ( on the ground)
do = initial position = height
vo = original vertical velocity = 0
a = - 9.81 ms^2
so you have this:
0 = height + 1/2 (- 9.81) m/s^2 * (1)^2
height = 4.9 meters
Which lists the major steps of solar system formation in the correct order? collapse, accretion, condensation collapse, condensation, accretion accretion, condensation, collapse
The three main phases of the development of the solar system are collapse, condensation, and accretion.
What is the process of accretion?The process whereby solids accumulate to become progressively larger structures until planets are established is known as accumulation throughout the study of planets. A disc of coarser solid materials mixed with gas at the beginning has a large extent based of around 1% of the volume of the hydrocarbons.
What causes accretion to form?Small particles are pulled together by attraction forces to form bigger masses during the process of accretion. Gravity draws these particles together, where they combine to form comets and asteroid bodies. Protoplanets are created by collisions between planetesimals.
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the largest types of clouds found in interstellar space are
The largest types of clouds found in the interstellar space is called Molecular clouds. It mostly composed of molecular hydrogen and dust.
Molecular clouds are also known as dark nebula, which is massive interstellar clump or cloud. It is completely opaque due to the presence of dust and are usually visualized as dark patches between bright galaxies. These molecular clouds are the birth place of stars.
These clouds have higher density because of the higher number of hydrogen molecules per cubic centimeters. Some is said to have more than 10⁵ H₂ molecules per cm³. These clouds are so large, even individual clouds are bigger than stars, and the whole clump may be so large that there will be 150 light years to travel across.
So the largest clouds in interstellar space are molecular clouds.
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Silver has a density of 10.5g/cm3 and gold has a density of 19.3g/cm3. Which would have a greater mass, 5cm3 of silver or 5cm3 of gold ?
Silver has a density of 10.5 g/ [tex]cm^3[/tex] and gold has a density of 19.3 g/ [tex]cm^3[/tex], so out of 5 [tex]cm^3[/tex] of silver or 5 [tex]cm^3[/tex] of gold, the 5 [tex]cm^3[/tex] of gold would have a greater mass as the mass of gold is 96.5 g while the mass of silver is 52.5 g.
What is the relationship between density and mass?The mass of an object is equal to its density multiplied by its volume, so here is the calculation,
For 5 [tex]cm^3[/tex] of silver, the mass is,
mass = density x volume
mass = 10.5 g/ [tex]cm^3[/tex]x 5 [tex]cm^3[/tex]= 52.5 g
For 5 [tex]cm^3[/tex] of gold, the mass is
mass = density x volume
mass = 19.3 g/ [tex]cm^3[/tex]x 5 [tex]cm^3[/tex]
mass = 96.5 g
Hence, silver has a density of 10.5 g/ [tex]cm^3[/tex] and gold has a density of 19.3 g/ [tex]cm^3[/tex], so out of 5 [tex]cm^3[/tex] of silver or 5 [tex]cm^3[/tex] of gold, the 5 [tex]cm^3[/tex] of gold would have a greater mass as the mass of gold is 96.5 g while the mass of silver is 52.5 g.
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what is the calibration nut on a bimetallic stemmed thermometer used for?
The calibration nut on a bimetallic stemmed thermometer is used for: determining if the product's temperature has exceeded safe limits during shipment or subsequent storage.
What is bimetallic stemmed thermometer?Bimetallic stemmed thermometer can check temperatures from 0˚F to 220˚F (–18˚C to 104˚C) and this thermometer measures temperature through its metal stem. When checking the temperature, insert the stem into the food up to dimple.
Bimetal thermometers work on the principle that different metals expand at different rates as they get heated. By using two strips of different metals in thermometer, movement of the strips correlates to the temperature and can be indicated along scale.
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If you are told that a 20 kilogram object is raised by 10 meters, you know that?
a. the force of gravity on the object is 20 kilograms.
b. the mass of the object is 20 kilograms
c. the force of gravity on the object is 10 meters.
d. the mass of the object is 10 meters.
e. the acceleration of the object is 200 kilogram-meters.
If you are told that a 20 kilogram object is raised by 10 meters then the mass of the object is 20 kilograms.
What is force of gravity?
Force of gravity is the attractive force between two objects that is due to their masses. It is what causes objects to fall to the ground when dropped and what keeps planets in their orbits. The strength of the gravitational force between two objects depends on their masses and the distance between them. The force of gravity is an inverse square law, meaning that if the distance between two objects is doubled, the force of gravity between them will be one-fourth of what it was originally.
The mass of an object is a measure of the amount of matter it contains and is not affected by changes in its position or location. Therefore, the mass of the object remains the same regardless of how high it is raised. In this case, the mass of the object is 20 kilograms.
Therefore, mass of the object is 20 kilograms is the correct answer.
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According to the information in the table, when does milo need to leave home in order to get to the basketball game in time to warm up appropriately?.
Milo need to leave home at 8.30am in order to get to the basketball game in time to warm up appropriately.
What advantages does a warm-up have?
Your heart rate and blood flow rise as you warm up. More oxygen can now go to your muscles thanks to this. The connections between your nerves and muscles are also activated and primed during a warm-up, which increases movement efficiency.
In general, warm-ups and cool-downs involve performing your activity more slowly and with lesser intensity. Perform five to ten minutes of low-intensity exercise before working out to warm up. Try exercises like jumping jacks, jogging, or walking. Try dynamic stretches, which get your body moving, as opposed to static stretches.
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