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Standing on the surface of a small spherical moon whose radius is 6.85·104 m and whose mass is 7.95·1018 kg, an astronaut throws a rock of mass 1.75 kg straight upward with an initial speed of 24.1 m/s. (This moon is too small to have an atmosphere.) What maximum height above the surface of the moon will the rock reach?
An airplane is flying with a velocity of 90 at an angle of 22 above the horizontal. When the plane is a distance 122 directly above a dog that is standing on level ground, a suitcase drops out of the luggage compartment.
A river steamboat travels 36 miles downstream in the same time that it travels 24 miles upstream. What is the currents speed
Compute the electric field needed to cause that acceleration, and the amount of charge that the Van de Graaff had accumulated. Note: Van de Graaff has a radius of 0.150 m.
A 41-kg box is thrown at a speed of 220 m/s & is brought to a halt in a collision that lasts for a time of 6.5 m/s. Find the magnitude of the average net force that acts on the box during the collision.
An object is placed 11.7 cm to the left of a diverging lens of focal length -5.81 cm. Find the distance d that places the final image at infinity
If the energy that goes into evaporating one kilogram of water from Lake Michigan at 11.0 oC were used instead to raise, how high (in m) would it be lifted
The minimum distance required to stop a car moving at 36.0 mi/h is 48 ft. What is the minimum stopping distance for the same car moving at 70.0 mi/h, assuming same rate of acceleration.
A large tanker truck can carry 30 ton (30,000 lb) of liquid. (a) What volume of water can it carry? (b) What volume of gasoline can it carry.
Two polarizers are oriented at 30.0 degrees to one another. Light polarized at a 15.0 degree angle to each polarizer passes through both
A 52kg ballet dancer stands on her toes during a performance with four square inches (26cm2) in contact with the floor. What is the pressure exerted by floor over the area of contact in some cases.
If the torque required to loosen a nut on the wheel of a car has a magnitude of 33.1 N · m, what minimum force must be exerted by a mechanic
A hot-air balloon is ascending at the rate of 14 m/s and is 57 m above the ground when a package is dropped over the side. How long does the package take to reach the ground
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