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An asteroid is discovered heading straight toward Earth at 14 km/s.An international team manages to attach a giant rocket engine tothe asteroid. The rocket fires for 10 min, after which the asteroidis moving at 28 degrees to its original path at a speed of 20 km/s.Find its average acceleration.
The output voltage of an AC generator is given by ?v = 107 V sin (45?t). Find average power delivered to the inductor
Suppose that the displacement of an object is related to time according to the expression x = Bt2. What are the dimensions of B?
I have the apparent magnitude of the unknowns in the U-B bandwith and have charted the main sequence stars in relation to their B-V values and absolute magnitude. How do I determine the absolute magnitude of the unknowns in the U-B width to determ..
The terminals of a generator are connected to inductors. Inductor 1 is equal to 30.0 mH and the second inductor has a value of 60.0 mH. What is the value of the third inductor
A simple ideal pulley system has a mechanical advantage of 14. How much force is required to lift a boulder of with a weight of 5,270 Newton
a 2.0kg projectile if fired with initial velocity components Vox= 30 m/s and Voy= 40 m/s from a point on the earth's surface. What is the kinetic energy of the projectile
A runner is practicing on a circular track that is 535 m in circumference. From the point farthest to the east on the track, he starts off running due south and follows the track as it curves around toward the west.
A bicyclist starts from rest at the top of a hill and rolls down the hill without pedaling. what is the bicyclist's speed at the bottom of the hill
A step-down transformer has a turns ratio of 1:10, and its primary is connected across the terminals of a standard 120-V wall socket. What power P is dissipated in the resistor
if the maximum height from which a person can jump without a parachute and still survive is 7.50 meters the maximum
A 0.09 kg arrow is pulled back in a bow. After being held still, it is let go, moving 25m/s after the 0.47 meters in which the arrow is in contact with the bow string. What work was done on the arrow by the bow string? What force was exerted by the a..
A tube leads from a 0.150 kg calorimeter to a flask in which water is boiling under atmospheric pressure. Compute the heat of vaporization of water
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