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The acceleration due to gravity of a particle falling toward the earth is a = -gR2/r2, where r is the distance from the center of the earth to the particle, R is the radius of the earth, and g is the acceleration due to gravity at the surface of the earth. If R = 3960 mi, calculate the escape velocity, that is, the minimum velocity with which a particle must be projected upward from the surface of the earth if it is not to return to earth.
A 1000 kg car zooms around a circular bend with a radius of 100m at 20 m/s. What direction is the force in on the car
A solenoid of length 6.3 cm and diameter 0.88 cm is wound with 178 turns per cm. The current is decreasing at a rate of 38.0 A/s. What is the induced emf in one of the windings
An X-ray photon with a wavelength of 0.240 nm scatters from a free electron at rest. Find the initial momentum of the photon
How much time does the ball spend in the air. What is the speed v of the ball just before it strikes the water.
Julie throws a ball to her friend Sarah. The ball leaves Julie's hand a distance 1.5 meters above the ground with an initial speed of 19.0 m/s at an angle 48.0 degrees; How high above the ground will the ball be when it gets to Julie
Bacteria vary somewhat in size, but a diameter of 2.00?m is not unusual, What would be surface area (in square millimeters) of such a bacterium, assuming that it is spherical
A nonconducting spherical shell, with an inner radius of 4 cm and an outer radius of 6 cm, has charge spread nonuniformly through its volume between its inner and outer surfaces. The volume charge density ? is the charge per unit volume, with the ..
At a given instant an 58 mH inductor stored an energy of 86 µJ. Determine the current in the inductor at this instant
What is the length of runway required for the plane to take off
two point charges q and -3q are located a distance d apart with -3q to the right of q. find the location of all the
A string is wrapped around a wheel of radius 0.4 m and moment of inertia 25 kg-m2. If the string is pulled with a force of 60 N, what is the angular acceleration of the wheel
With a quick flick of her wrist, an Ultimate Frisbee player can give a Frisbee an angular velocity of 5.00 revolutions per second. Through what angle, in radians, does the player rotate the Frisbee
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