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The acceleration due to gravity at the surface of a planet is 18 m/s2. If a satellite is in a stable orbit at a distance of 3*r m from the planet's center, where r is the radius of the planet, what is the speed of the satellite to maintain this stable orbit?
A girl rides the escalator that moves foward at a constant speed. As the girl raises, how do her gravitational energy and kinetic energy change.
The legend that Benjamin Franklin flew a kite as a storm approached is only a legend - he was neither stupid nor suicidal. what is the current through the water layer
what is the direction of its velocity relative to the frame of reference.
what is the smallest value d can have before the string breaks?
If they are released from rest and allowed to fall toward one another, what is their speed when they first make contact?
A car and a motorcycle is racing from rest. The motorcycle first takes the lead because its constant acceleration am = 8.40 m/s2, How long does the car take to reach the motorcycle
An initially stationary 4.1 kg object accelerates horizontally and uniformly to a speed of 12 m/s in 3.3 s. how much work is done on the object by the force accelerating it
A proton is projected in the positive x direction into a region of uniform electric field E = -5.50 105 i N/C at t = 0. Determine the time interval over which the proton comes to rest
What is the velocity of each ball. while both pipes vibrate at their fundamental frequencies, a beat frequency of 15 Hz is heard. How many centimeters were cut off the end of the second pipe? The speed of sound is 343 m/s.
The rms current in an ac circuit with a resistance of 140 is 0.88 A. What is the average power consumed by this circuit
The mousetrap car has a mass of 100 grams and starts travelling at the speed of 1.80 m/s and after 5seconds get the rested? What force did the motor exert.
An object's moment of inertia is 2.00kgm2 . Its angular velocity is increasing at the rate of 3.80, What is the total torque on the object
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