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Assume a planet is a uniform sphere of radius R that (somehow) has a narrow radial tunnel through its center. Also assume we can position an apple anywhere along the tunnel or outside the sphere. Let FR be the magnitude of the gravitational force on the apple when it is located at the planets surface. How far from the surface is there a point where the magnitude of the gravitational force on the apple is FR/2 if we move the apple (a) away from the planet and (b) into the tunnel? Express you answer in terms of the variables given.
After the engine is ignited, what is the rocket's speed when the spring has stretched 19.00 cm past its natural length? What would be the rockets speed after travelling the distance if it weren't tied down to spring.
q1. suppose a chimpanzee swings through the jungle on vines. if it swings from a tree on a 13 m long vine that starts
two capacitors c1 and c2 with capacitors of 0.25 uf and 0.50 uf respectively are connected in parallel across on 80 volt circuit, what is the total charge stored in the capacitor
A block of mass m lies on a horizontal table. The coefficient of static friction between the block and the table is mu_s. If the block is at rest, what is the magnitude of the force due to friction
A spaceship is launched from the Earth's surface with a speed v. The radius of the Earth is R. What will its speed be when it is very far from the Earth
Find the maximum altitude reached by the rocket.
In the annual battle of the dorms, students gather on the roofs of Jackson, A second balloon launched at the same angle hits the edge of Walton's roof. Find the initial speed of this second balloon
A 7.00 N window washer is standing on a uniform scaffold supported by a vertical rope at each end. What is the force in each rope when the window washer stands 1.00 m from one end
An LC circuit is built with a 10mH inductor and an 8.0pF capacitor. The capacitor voltage has its maximum value of 45V at t=0s. How long is it until the capacitor is first fully discharged
a solenoid is designed to store Ul = 0.10 J of energy when it carries a current I of 450 mA. How many turns of wire must the solenoid have
A group of hikers hears an echo 5 s after shouting. If the temperature is 16.0°C, how far away is the mountain that reflected the sound wave.
A nickel has a mass of about 5 grams. If all of this mass could be converted to energy, how many Hiroshima sized bombs would this be
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