A boy accelerates a 10 kg wagon from a velocity of 2 m/s to 4 m/s. How much work does the boy do on the wagon?

When an object is moving with uniform velocity, what is its acceleration?

A wave has a speed of 30 m/s, a frequency of 6 Hz, and a wavelength of 5 m. If the wavelength remains constant, and the frequency is doubled, what is the new speed of the wave?

An airplane is being pushed West by its engines with a force of 350 N as it starts to take off the runway at the Atlanta airport.

The radius of the merry-go-round is 10 meters. The Chile has a mass of 40 kilograms. What is the child's moment of inertia

What's the number 9?

What is the frequency of a pendulum that is moving at 30 m/s with a wavelength of. 35m?

A 1kg of compound a with specific heat capacity of 1000J is heated increasing its temp by 1 degree. How much energy has been added to block

When the surfaces of two semi-infinite solids at different uniform initial temperatures are brought into intimate contact with each other, the following statements are correct: The heat flux from one surface equals that into the other.

if the accepted thickness of aluminum foil is 1.5x10^5 is your answer percise, accurate or both. explain your answer

An object is thrown upwards with the speed of 40.0 km/hr in 5 second, calculate the distance in millimeters (mm).