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A rocket is accelerated to speed 37400 m/s near Earth's surface (where Earth's radius is Re = 6370 km.), and it then coasts upward. (a) Determine the ratio of its speed to the escape speed on Earth. (b) Decide the same ratio for its speed very far from Earth.
A copper ball with a radius of 1.47 cm is heated until its diameter has increased by 0.198 mm. Assuming an initial temperature of 21.3°C, calculate the final temperature of the ball
A physics TA pushes a 20.0-kg equipment cart at a constant velocity a distance of 24.0 m down the hall. determine the work done by the force of gravity acting on the cart
You observe that a solid cube of some material floats on the surface of an oil puddle at a service station with 68.5% of its volume submerged
The two wires of length 2 m are 3 mm apart and carry a current of 9 A dc. Calculate the force between these wires
A perfectly insulated system has work done by it at a rate of 13 W. At what rate is the internal energy of the system changing?
A converging lens is located 10.0 cm to the left of a diverging lens. The focal length of the converging lens is +20.0 cm. where is the final image formed by the diverging lens
an elastic cord has an unstreched length of 8.1 m and a cross-section of 2 cm2. if the youngs modulus of the material
A stainless-steel orthodontic wire is applied to a tooth that is out of line by 40 degrees. find the magnitude of the force on the tooth
Two high-current transmission lines carry currents of 25.0A and 75.0A in the same direction and are suspended parallel to each other 45.0cm apart. what magnetic force does each segment exert on the other
a hollow sphere has a mass of 15kg, an inner radius of 12cm and an outer radius of 18cm. What is the rotational inertia of the sphere
A 2 kg book is lying on a 0.75 m high table. You pick it up and place it on a bookshelf 2.25 m above the floor. How much work does your hand do on the book
A magnetic field can force a charged particle to move in a circular path. What is the period of the motion
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