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Question: A large asteroid of mass 71700 kg is at rest far away from any planets or stars. A much smaller asteroid, of mass 930 kg, is in a circular orbit about the first at a distance of 256 meters as a result of their mutual gravitational attraction. What is the speed of the second asteroid?
A small, 300 g cart is moving at 1.60 m/s on an air track when it collides with a larger, 1.00 kg cart at rest. After the collision, the small cart recoils at 0.890 m/s.
An engine with reservoir temperatures of 387 K and 725 K operates at half the efficiency of a Carnot engine. If the hot reservoir supplies the engine 4670 J of heat energy during each cycle, how much net work does the engine do in a cycle?
A cubical piece of heat-shield tile from the space shuttle measures 0.12 m on a side and has a thermal conductivity of 0.072 J/(s m · C°). How much heat flows from the outer to the inner surface of the tile in six minutes
Two identical small insulating balls are suspended by separate 0.208m threads that are attached to a common point on the ceiling. Determine the charge on each ball
A 16 kg girl slides down a playground slide that is 2.8 m high. When she reaches the bottom of the slide, her speed is 1.3 m/s. How much energy was dissipated by friction
Velocity and time for the moving particle.
What is velocity relative to the ice surface
A 2 kg object is attached to a spring and placed on a horizontal, smooth surface. A horizontal force of 20.0 N is needed to hold the object at rest when it is pulled 0.200 m from its equilibrium position.
a 5kg block is pushed up a frictionless plane inclined at 30 degrees to the horizontal. What fraction of the work done by the force is the dissipated by the friction
The fundamental frequency of an open-open tube is 1800Hz when the tube is filled with "zero celicus" helium. What is its frequency when filled with "zero celicus" air? The speed of sound in helium is 970m/s and in air is 331m/s . Express your answer ..
An oven may be regarded as a cube, each side 1.2m long. The oven stands on thin legs and the heat transfer through each of the six faces is identical.
Before starting this problem, review COnceptual Example 3. Suppose that hail described there bounces off the roof of the car with a velcity of +15 m/s. calculate the force exerted by the hail of the roof
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