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Suppose a spacecraft of mass 28000kg is accelerated to 0.25c
a.) How much kinetic energy would it have?
b.) If you used the classical formula for kinetic energy, by what percentage would you be in error?
The Beretta Model 92S (the standard-issue U.S. army pistol) has a barrel 127 long. The bullets leave this barrel with a muzzle velocity of 334 .What is the acceleration of the bullet while it is in the barrel, assuming it to be constant?
A parallel beam of light containing red (660 nm) and blue (470 nm) wavelengths goes from polystyrene to water, What is the angle between the two colors in water
A cue ball hits a stationary eight ball on a pool table. For which of the following systems is there a change in momentum during the collision? define why.
A laser used to repair a detached retina has wavelength of 532nm. How many photons are in each pulse
An AC voltage of the form ?V = (85 V) sin (310 t) is applied to a series RLC circuit. If R = 46 ?, C = 29 µF, and L = 0.27 H, find the impedance of the circuit
Find the change in momentum of a 1140kg car that increases its speed from 4.5 m/s to 18.0 m/s in a time of 19s while travelin in the same direction
Since the circumference of a circle of radius r is 2p r, every time the center of mass moves a distance 2p r, the object rotates a full circle (2p radians). If this happens in a time T then. Combine these equations to find out an expression for ..
Two teams of nine members each engage in a tug of war. The first team's members have average masses of 65 kg and exert average forces of 1350 N horizontally. What is the acceleration of the two teams
linda pulls a sled with force 89 newtons at 30 degrees east of north. find the resultant force and direction
a jetliner is moving at a speed of 270 km/h. the plan then decelerates at 4.5 m/s2. what is the minimum runway length on which this aircraft can land
A crane is required to pull up a load of building supplies from the ground to a height of 90 m at a constant velocity. Find the power output required of the motor that pulls the cable up
A 1.0-kg block of ice is initially at 0°C. Heat is added to this system, and the entropy is increased by 357.1 J/K. How much of the ice melts
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