Answer:
A. The car does not land in the river
B. 399.27 meters
Explanation:
The Cliff Height, s: 609.6 m
The velocity at the edge of the cliff, vₓ = 40.3 meters/second (90 miles per hour)
The location of the Colorado River = 536.5 meters (1,760 feet) from the cliff base
The width of the river across = 300 feet average
The depth of the river = 40 feet
Assumption;
The direction of the vehicle = Horizontal
Vertical velocity of the vehicle = 0 m/s
The time, t, it takes the car to reach the level of the bottom of the cliff is given as follows;
s = [tex]u_y[/tex]·t + 1/2·g·t²
Where;
[tex]u_y[/tex] = The initial vertical velocity of the vehicle = 0
g = The acceleration due to gravity = 9.81 m/s²
Therefore, we have;
609.6 = 0×t + 1/2 × 9.81 × t²
609.6 = 1/2 × 9.81 × t²
t = √(2 × 609.6/9.81) ≈ 11.148 seconds
The horizontal distance, x, travelled by the car in the above calculated, 11.148 seconds, time is x = vₓ × t = 40.3 × 11.148 = 449.27 meters
Therefore, the horizontal distance from the cliff travelled by vehicle on landing from the base of the cliff = 449.27 meters
Given the river is located approximately 536.5 meters from cliff's base, the car does not land in the river
B. In order for the car to land 50 ft. from the edge of the river, the river has to be 449.27 - 50 ≈ 399.27 meters from the base of the cliff.
Currently, the world population is about:
A. 7 billion
B. 450 million
C. 1.2 trillion
D. 700 million
What does it mean to say that mass is conserved during a physical change?
This law states that, despite chemical reactions or physical transformations, mass is conserved — that is, it cannot be created or destroyed — within an isolated system. In other words, in a chemical reaction, the mass of the products will always be equal to the mass of the reactants.
Answer:
100% oon test
Explanation:This law states that, despite chemical reactions or physical transformations, mass is conserved — that is, it cannot be created or destroyed — within an isolated system. In other words, in a chemical reaction, the mass of the products will always be equal to the mass of the reactants.
11. When gathering glassware and equipment for an experiment, you should
a. Read all directions carefully to know what equipment is necessary
b. Examine all glassware to check for chips or cracks.
C. Clean any glassware that appears dirty
d. All of the above
Answer:
C
Explanation:
Option D is the correct answer.
What are the importance when gathering glassware and equipment for experiment?Usually in the research labs there were some rules and we have follow those for our safety measures. Some importance rules while doing experiments were:
Flammable materials should be used in open.Always must use the experimental equipment given.While gathering we must read all directions carefully to know the necessary of the equipment.Glassware should be checked whether it's broken or not before using the equipment.All the glassware and equipment using for experiment must be clean.Should ask our lead or instructor before and after the experiment.While using a test tube we should be away from other people.We should use tongs before picking up the heating material and heated equipment.For any clarifications and doubts we should always ask and listen to the instructor.Hence, option D is the correct answer.
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Fill in the correct answers. A big wheel with twice the circumference of a small wheel will rotate with ____ the force and ___ the speed of the small wheel.
A) half, twice
B) Three times, half
C) twice, half
D) half, three times
Answer:
C.
Explanation:
""""""" Twice,Half """"""
A big wheel with twice the circumference of a small wheel will rotate with the force and the speed of the small wheel.
C) twice, half
Circumference of WheelA big wheel with twice the circumference of a small wheel will rotate with twice the force and half the speed of the small wheel.
It is the round circle found on the outside angle of the machine.
It is the adjusted barrel or rod-like portion put on the interior of the machine that's connected to the wheel and makes a difference to advance development.
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V=A shot-putter tosses an 8 kg metal ball across a field. The ball moves from rest to a velocity of 4 m/s in 0.8 seconds. Calculate the force (in Newtons) that was used to move the ball. Don't input the unit.
can somebody helppp me pls thank you:)))))
HEY HEY HEY HEY
Explanation:
HEY HEY HEY HEY HEY
"A car is travelling at 70 m/s. The driver sees a cow in the road and slows down with a constant acceleration for 10 seconds before coming to a stop. What is the car’s displacement by the time is stops." what information do you know?
The question does not ask for anything in particular. I will calculate the acceleration and distance.
Answer:
The acceleration of the car is [tex]-7\ m/s^2[/tex]
The distance traveled before stopping is 350 m
Explanation:
Constant Acceleration Motion
It's a type of motion in which the velocity of an object changes by an equal amount in every equal period of time.
Being a the constant acceleration, vo the initial speed, vf the final speed, and t the time, the following relation applies:
[tex]v_f=v_o+at\qquad [1][/tex]
The distance traveled by the object is given by:
[tex]\displaystyle x=v_o.t+\frac{a.t^2}{2}\qquad [2][/tex]
The car has an initial speed of v0=70 m/s when the driver sees a cow in the road and steps on the brakes with an (assumed) constant acceleration during t=10 seconds before stopping (vf=0).
With the information provided, we can calculate the value of the acceleration and the distance traveled.
Using the equation [1] we can solve for a:
[tex]\displaystyle a=\frac{v_f-v_o}{t}[/tex]
Substituting the numerical values:
[tex]\displaystyle a=\frac{0-70}{10}=-7\ m/s^2[/tex]
The acceleration of the car is [tex]-7\ m/s^2[/tex]
The distance is now calculated by using [2]
[tex]\displaystyle x=70\cdot 10+\frac{(-7)\cdot 10^2}{2}[/tex]
[tex]\displaystyle x=700-\frac{700}{2}=350\ m[/tex]
The distance traveled before stopping is 350 m
what stresses you think of three things and describe what makes these situations stresssful how do they make you feel
Answer:
a lot stresses me out honestly like school work because we are virtual and it's hard cause you basically teaching yourself, secondly me maintaining to be happy i always put everybody's happiness before mine and it's just a lot for me, and lastly the thing that stresses me the most is me overthinking i ALWAYS overthink situations.
Explanation:
:/
Does the moon control the waves in the ocean?
Answer:
no don't think so
Explanation:
JESUS CHRIST controls everything 100IQ
No, the moon does not directly control the waves in the ocean. The primary factors that influence the formation of waves in the ocean are wind and the interaction between wind and the water's surface.
The moon, however, does play a significant role in influencing the tides, which are the periodic rise and fall of the ocean's surface.
The gravitational force exerted by the moon, as well as the sun to a lesser extent, creates tidal bulges on the Earth. As the Earth rotates, these tidal bulges move around the planet, resulting in the daily cycle of high tides and low tides.
The gravitational pull of the moon is stronger on the side of the Earth facing the moon, causing a high tide, while on the opposite side, a high tide also occurs due to the centrifugal force resulting from the Earth's rotation. The areas in between experience low tides.
While tides can affect the height and intensity of ocean waves near the coastlines, the actual formation and behavior of waves are primarily driven by wind patterns, water depth, and other factors such as underwater topography.
Waves are generated when the wind transfers its energy to the water's surface, creating oscillations that propagate as waves. These waves can travel vast distances across the ocean, even in the absence of tidal influences.
In conclusion, while the moon's gravitational pull influences the tides, it does not directly control or generate the waves in the ocean.
Waves are primarily driven by wind and other factors, whereas tides are the result of gravitational forces acting on the Earth's oceans.
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Why red has the weakest energy?
Answer:
because plants or living things cant reflect with a red light
Explanation:
Answer:
Explanation:
Red has the longest wavelength so it has the lowest energy of any color.
In a full sentence, explain the difference between static charge and static shock.
Answer:
The most significant difference between the static and current electricity is that in static electricity the charges are at rest and they are accumulating on the surface of the insulator. Whereas in current electricity the electrons are moving inside the conductor.
If a man walks 600 meters in 300 seconds, what was his speed in meters per second?
Answer:
His speed in meters per second was 2. Or, 2 meters per second.
Explanation:
Which of the following describes the rate at which work is done?
Force
Energy
Power
Impulse
Answer:
power
Explanation:
Identify all the forms of energy in the picture below
identify thermal energy, mechanical energy, radiant energy, electrical energy, sound energy, and chemical energy
Answer:
we are going to focus on just a few. • Heat energy ( Thermal). • Mechanical energy. • Light (Radiant) energy. • Electrical energy. • Sound energy. • Chemical energy
3The diagram shows three objects that are
moving. A force acts on each object. For each.
say how its movement will change.
Answer:
ball moves forward
direction of moving car is reversed
plane changes the direction
The force on the ball acting to the right may changes its falling to the net. The north-east force acting on the airplane can drag the plane to the eastward direction thus deviates the plane from north. The backward force acting on the car make it hindrance to its forward movement.
What is force?Force is an external agent acts on a body, to deform it or change its state from motion or rest. There are different type of forces such as magnetic forces, gravitational force.
Force accelerates a body to move where, as the mass increases, more force have to apply to accelerate the body. If two forces acting in opposite direction, the will cancel each other in magnitude.
The force acting on the ball makes it prevents from falling and the force acting on the plane can deviates its direction from north to eastwards. The backward force acting on the car decelerates the car from forward movement.
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Why violet has the strongest energy?
Answer:
Explanation:
Because violet waves have the shortest wavelength of the visible light spectrum, they carry the most energy.
Which describes one event that causes an eclipse?
Earth’s rotation on its axis
shadows from clouds covering Earth
Earth’s shadow covering the moon
the gravity from the moon and Sun pulling in the same direction
Answer:
Earths shadow covering the moon would create a lunar eclipse.
Explanation:
because i just know
A lunar eclipse is occur when Earth’s shadow is covering the moon.
What is eclipse?An eclipse happens when one astronomical body like Earth or moon blocks light from or to another.
What is lunar eclipse?A lunar eclipse is caused by Earth blocking sunlight from reaching the moon and causing a shadow across the lunar surface.
What is solar eclipse?Sometimes when the Moon orbits Earth, the Moon moves between the Sun and Earth. When this happens, the Moon blocks the light of the Sun from reaching Earth. This causes an eclipse of the Sun, or a solar eclipse.
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A ball is dropped off the roof of a tall building. If the ball reaches the ground in 8 seconds, how tall is the building, in meters? Round to the nearest whole number (a=9.8 m/s2)
Let b be the height of the building, and y the height of the ball at time t, given by
y = b - 1/2 gt²
where g = 9.8 m/s² is the magnitude of the acceleration due to gravity.
It takes the ball 8 s to reach the ground, at which point y = 0, so that
0 = b - 1/2 (9.8 m/s²) (8 s)²
b = 1/2 (9.8 m/s²) (8 s)²
b = 313.6 m
which model would be classified as a physical model
Answer:
Model will be classified as a physical model since it is demonstrating a model in real life.
Explanation:
Answer:
Marshmallow answer
Explanation:
What is symbiosis
A an interaction between organisms
B a type of reproduction
C and organelle in the cell
D a process by which plants make their own food
Answer:
A an interaction between organisms
Explanation:
Symbiosis is an interaction between two or more organisms. It is a biological interaction which can be mutualism, commensalism or parasitic.
Mutualism is a form of interaction between two organisms where they both derive benefit from one another. Commensalism is an interaction in which one organism derives benefit and the other is neutral. Parasitic is an interaction where an organism derives benefit from the other in which the other is harmed.Symbiosis simply entails the interactions between organisms.
A cd player has a current of 0.1 a flowing through it. if the source voltage is 4v, what is the resistance? R=V/I
Given parameters:
Current of CD player = 0.1A
Source Voltage = 4V
Unknown:
Resistance = ?
Solution:
Based on Ohm's law;
V = I R;
V = voltage
I = current
R = resistance
Input the parameters and solve;
4 = 0.1 x R
R = [tex]\frac{4}{0.1}[/tex] = 40ohms
The resistance of the CD player is 40ohms
difference between precion and accuarcy
Answer: accuracy is how close a value is to their true value, like how close a arrow gets to the bull's eye center. precision is how repeatable a measurement is, like how close a second arrow is to the first one.
Explanation:
6. A child tugs on a rope attached to a 0.62-kg toy with a horizontal force
of 16.3 N. A puppy pulls the toy in the opposite direction with a force 15.8
N.What is the acceleration of the toy? (Hint: Remember direction:
towards child or puppy?)
Answer:
Explanation:
Force Mass * acceleration
F = ma
a = F/m
Sum of force = 16.3N - 15.8N = 0.5N
Mass = 0.62kg
Substitute
a = 0.5/ * 0.62
a = 0.81m/s²
The acceleration of the toy is 0.81m/s²
A plane is heading south at 250 mi/hr. If the jet stream (wind) is blowing from west to the east at 80 mi/hr, what is the speed and direction of the plane?
Answer:
Speed = 262.49
Direction = 72.26°
Explanation:
[tex] \sqrt{ {250}^{2} + {80}^{2} } [/tex]
=262.49mi/hr
[tex] \tan( \alpha ) = \frac{y}{x} [/tex]
[tex] \tan( \alpha ) = \frac{250}{80} [/tex]
[tex] \alpha = {tan}^{ - 1} ( \frac{250}{80} )[/tex]
=72.26°
If your mass is 63.7 kg, and you are standing 7.5 m away from a boulder with
a mass of 9,750.6 kg, what is the gravitational force between you and the
boulder? Newton's law of gravitation is F gravity
Gm; m2. The gravitational
constant G is 6.67 x 10-11 Nm2/kg?
7.36 × 10⁻⁷ Newton is the gravitational force between you and the boulder.
What is Gravity ?Gravity or gravitational force of the earth is defined as the force on which a planet attracts or pulls another planet towards the center. It is represented by symbol g.
What is Force ?Force is defined as the physical quantity and the vector quantity which acts on an object and causes the object to change its size and shape to stop moving and start moving to decelerate and accelerate. Force has both the directions as well as magnitude. The SI unit of force Newton which is also represented as N, named the scientist Sir Issac Newton.
What is Newton's Law of universal gravitational ?The Newton's Law of universal gravitational is defined as the universal force of attraction acting between the two bodies which is inversely proportional to the square of the distance between them and the directly proportional to the product of their masses.
It is represented as
[tex]F = \frac{G m_1 m_2}{r^2}[/tex]
Where,
F represents the gravitation force between the two bodies
G represents the gravitation constant
m₁ represents the first body mass
m₂ represents the second body mass
r represents the distance between the two bodies.
Here,
G = 6.67 x 10-¹¹ Nm²/kg
m₁ = 63.7 kg
m₂ = 9,750.6 kg
r = 7.5 m
Now by putting in the above formula we get the gravitational force between you and the boulder.
[tex]F = \frac{6.67 \times 10^{-11}\ Nm^2/kg \times 63.7\ kg \times 9,750.6\ kg}{(7.5 m)^2}[/tex]
[tex]F = \frac{4142825.1774 \times 10^{-11}\ Nm^2/kg}{56.25}[/tex]
= 7.37 × 10⁻⁷ N
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If a sled is being pulling on the ground toward the right with a force of 100 N and friction is acting on it to the left with a force of 85 N, what is the net force
of the sled?
O 15 N to the left
15 N to the right
185 N to the right
185 N to the left
Answer:
15 N to the right.
Explanation:
100 N to the right -->
85 N to the left <--
So therefore in order to find the net force of where the sled is being dragged towards is 100 N - 85 N = 15 N.
So the sled is moving towards the right of 15 N.
What is avarage speed? (AS)
speed?
Answer:
average speed = total distance/total time
Which best describes friction? A. a downward pull when objects fall through the air B. a constant force that acts on objects that rub together C. a downward pull on objects that roll on bumpy surfaces D. a constant force that pulls two objects toward each other
PLSSS I NEED HELP 20 POINTS!!!
Answer:
i believe its B
Explanation:
im taking physics and thats the only thing that makes sense to me haha
hope this is right and helps <3
Answer:
It's B: a constant force that acts on objects that rub together
Explanation:
Which sample of water has the most thermal energy?
O A. A 0.5 kg sample at 1°C
O B. A 1.5 kg sample at 10°C
O C. A 1 kg sample at 10°C
O D. A1 kg sample at 4°C
Answer:b
Explanation:
A box has pushed across the floor for 5.2 M with a 48 N force how much work is done?