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An asteroid of mass 1.00 x 10^9 kg comes from deep space and fallstoward Earth. Assume the asteroid started the fall from rest veryfar from Earth, and find
a) the change in potential energy when it reaches a point 4.00 x10(8) m from Earth (that's just beyond the Moon);b) the work done by gravity during this motion;c) the speed of the asteroid at that point; andd) how much work would have to be done on the asteroid by someother agent so the asteroid would be traveling at only half thespeed found in (c) at the same point?
A starship voyages to a distant planet 10 ly away. The explorers stay 4.00yr , return at the same speed, What is the speed of the starship
When lightning strikes a vehicle with a person inside, how long should the person stay inside the vehicle
Zach, whose mass is 55kg , is in an elevator descending at 14m/s. What is Zach's apparent weight while the elevator is braking
a small sphere that carries a charge q is whirled in a circle at the end of an insulating string. the angular frequency
A compound lens system consists of two converging lenses, one at x = -20.0 cm with focal length f_1= 10.0 cm, and the other at x= 20.0cm with focal length f_2 = 8.0 cm. What is the focal length of the new lens at the origin
An artillery gun is firing a shell with the initial velocity V0 =250 m/s at an angle 1 =60o to the horizontal. Find the time interval t between shots
What is the average linear speed of Jupiter about the Sun, (The distance from the Sun to Jupiter is 7.78 1011 meters. The orbital period around the Sun is 4332.7 days.)
An ambulance traveling at 36 m/s approaches a car heading in the same direction at a speed of 26 m/s. At what frequency does the driver of the car hear the siren
A sled is being pulled along a horizontal surface by a horizontal force of magnitude 600 N. Find the instantaneous power created by force
Large fossil fuel or nuclear electrical power plants operate most economically when run at full capacity 24 hours a day. Excess electrical energy can be "stored" and recovered by pumping water into a reservoir on top of a mountain and letting it fall..
In a double-slit experiment, the slit separation is 300 times the wavelength of the light. What is the angular separation (in degrees) between two adjacent bright fringes?
A venturi meter is used to measure the flow speed of a fluid in a pipe. The meter is connected between two sections of the pipe, What is the rate of water flow in cubic meters per second
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