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James pushed his 2-kg toy truck across the kitchen floor with a force of 2 N. If the floor provides 0.15 N of friction, how much will the truck accelerate? Show your work and include formula(s) and units.
A railroad car of mass 2.3 104 kg moving at 2.50 m/s collides and couples with two coupled railroad cars, What is the speed of the three coupled cars after the collision
An astronaut wants to remove a bolt from a satellite in orbit. He positions himself so that he is at rest with respect to the satellite, What is wrong with his method
A satellite moves in a circular orbit around the Earth at a speed of 4420 m/s. Determine the period of the satellite's orbit
What is the density of the Applewood if a piece of 10cm^3 of Applewood has a mass of 7.45g?
a hollow metal sphere has inner and outer radii of 7 cm and 10 cm radii. a point charge is located at the center is
An alpha particle is a nucleus of helium. It has twice the charge and four times the mass of the proton. When they were very far away from each other, but headed toward directly each other, a proton and an alpha particle each had an initial speed ..
A cubical piece of heat-shield-tile from the space shuttle measures 0.12 m on a side and has a thermal conductivity of 0.065 J/(s·m·C°). The outer surface of the tile is heated to a temperature of 1110°C, while the inner surface is maintained at a..
The density of an object equals its mass divided by its volume. The mass of Earth is 6 × 1024 kg and its radius is 4 × 103 miles. The mass of the Sun is 2 × 1033 g and its radius is 7 × 105 km. Calculate the Earth's density divided by that of the Sun..
The partition is now removed, and the water expands to fill the entire tank. Find out the final temperature of the water and the volume of the tank for a final pressure of 10 kPa.
Illustrate what is the time necessary for crossing if the hunter wishes to move neither upstream nor downstream whilst crossing the river? Draw the vectors to scale on a graph to determine the answer.
A baseball with a mass of 0.152 kg is moving horizontally at 32.0 m/s [E], when it is struck by a bat for 0.00200 seconds, Find the average net force of the ball
A wheel of mass M, radius of gyration k, spins smoothlyon a fixed horizontal axle of radius a which passes through a holeof slightly larger radius at the hub of the wheel. find the time and the number of turns that it takes to stop
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