12,726 Answered Questions for the topic physics

Physics

10/02/22

Projectile motion

Suppose that a world-class long jumper jumped on the moon with the same initial velocity as that which would produce a world record breaking distance of 9.35 m on earth. What would be the range of... more
Physics

10/02/22

What is the height of the cliff

A ballis launched at a bottom of a cliff with initial speed v0=40m/s directed at an angle of theta= 42° above the horizontal towards a cliff with height x. The ball hits the cliff 4.50s after the... more
Physics

10/02/22

Please help me with this question!!

A car accelerates with a constant acceleration for 8 seconds before reaching top speed. The car completes a trip of 0.9 kilometer in a total travel time of 47 seconds (including the time it takes... more
Physics

10/01/22

The mass of the larger block

In the diagram below, a worker drags two blocks on a frictionless surface. The work pulls on the first cord, which is connected to the smaller block and at an angle of q = 32.0O above the... more
Physics Science Chemistry

10/01/22

CHEMISTRY Question

 In a space shuttle, the CO2 that the crew exhales is removed from the air by a reaction within canisters of lithium hydroxide. Let's assume that one astronaut exhales about 825.  L of CO2 daily.... more
Physics

09/29/22

AP Physics Question

It takes .21s for a dropped object to pass a window that is 1.35m tall. From what height above the top of the window was the object released?
Physics

09/29/22

Physics highshool level

There are three equally sized positively charged metal spheres. Sphere A is 2.00 m left of sphere B, and sphere C is 1.5 m right of sphere B. sphere A has quadruple the charge of Sphere B, and... more
Physics

09/29/22

physics highschool level question

If an Alpha particle experience an electric force of 0.31 N at a specific location in space, what electric force would a proton experience at the same location?
Physics

09/28/22

What is the unknown mass and weight

using the initial valocity(0.82), final velocity (0.85) , distance (0.8m) and mass of 26.94 grams, find net force
Physics

09/28/22

A landowner has a triangular piece of land that she wants to fence. Starting at the west-most corner, the first side to be A=70m long and the next side to be 𝐵=95m long. What is her result?

A new landowner has a triangular piece of land that she wishes to fence. Starting at the west-most corner she measures the first side to be 𝐴=70mA=70m long and the next side to be 𝐵=95mB=95m long... more
Physics

09/28/22

What are the 𝑥x and 𝑦y distances from where the projectile was launched to where it impacts the target?

A projectile is launched at ground level with an initial speed of 𝑣𝑜=65m/svo=65m/s at an angle of 𝜃=45∘θ=45∘ above the horizontal. It impacts a target above the ground 3s3s later. What are... more

09/28/22

Help me please i dont even know where to start

Activity 2Record time at various positions below in Activity 2, Table 1 per the details in Activity 2 laboratory exercise instructions. Graph the points from Activity 2 Table 1 and draw a line of... more
Physics

09/28/22

Physics problem (momentum)

A 0.58 kg softball has a velocity of 13 m/s at an angle of 29° below the horizontal just before making contact with the bat. What is the magnitude of the change in momentum of the ball while it is... more

09/27/22

The shuttle lands on the runway at a speed of 105 meters/second. It then decelerates by parachute and comes to a complete stop in 60 seconds.

Assuming constant acceleration, calculate the distance required for the shuttle to come to a complete stop.
Physics

09/27/22

On dry concrete, a car can decelerate at 6.0m/s2, whereas on wet concrete it can decelerate at only 5.0m/s2.

(a) Find the distance necessary to stop a car moving at 24.0m/s24.0m/s on dry concrete.=(b) Find the distance necessary to stop a car moving at 24.0m/s24.0m/s on wet concrete.=(c) Repeat both... more
Physics

09/27/22

What is the velocity of the rock when it is 5.10m5.10m below the starting point (remember that velocity is a vector)?

A person throws a rock straight downwards off a cliff with an initial speed of 13.0m/s13.0m/s. What is the velocity of the rock when it is 5.10m5.10m below the starting point (remember that... more
Physics

09/27/22

The Box.........

You lift a 64.00-kg box from the floor onto a shelf 1.50m above the floor.If you lift the box with a constant speed, what is the magnitude of the force you exert on the box? Is it upward or downward?
Physics Science Chemistry

09/27/22

Chemistry Question

Ethanol, C2H5OH, is considered clean fuel because it burns in oxygen to produce carbon dioxide and water with few trace pollutants. If 500.0 g of H2O are produced during the combustion of ethanol,... more
Physics

09/27/22

What is the velocity of the rock when it is 5.10m5.10m below the starting point (remember that velocity is a vector)?

A person throws a rock straight downwards off a cliff with an initial speed of 13.0m/s13.0m/s. What is the velocity of the rock when it is 5.10m5.10m below the starting point (remember that... more
Physics

09/27/22

how long does it take to travel the 200m200m up the ramp? Treat the direction of motion as positive.

Suppose a car merges into freeway traffic on a ramp 200m200m in length. If its initial velocity is +10.0m/s+10.0m/s and it accelerates at +2.50m/s2+2.50m/s2, how long does it take to travel... more

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