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A 25g bullet pierces a sand bag 27cm thick. If the initial bullet velocity was 64 m/s and it emerged from the sandbag with 35m/s, what is the magnitude of the friction force(assuming it to be constant) the bullet experienced while it traveled through the bag?
A ball is thrown straight upward and returns to the thrower's hand after 2.50 s in the air. At what speed must the second ball be thrown
An athlete completed a marathon in 2 h, 39 min, 41 s. Determine the average speed (in miles per hour) of the athlete.
A skier of mass 100 kg starts from rest and comes down a slope of constant angle 25 degrees with the horizon. What is the length of the slope
If you mix 2.5g of 100 degree celcius steam with 60g of 0 degree celcius ice. what percentage of the ice remains solid
An airplane propeller is 2.18m in length (from tip to tip) and has a mass of 117kg. What is the angular acceleration of the propeller
What is the breaking strength
Assume that each cubic centimeter of water has a mass of exactly 1.00 g. What is the mass of one cubic meter of water
A long solenoid has 1580 turns in a length of 40.0 cm. What current has to flow through the solenoid in order to generate a magnetic field of 3.45 ?T in its interior
assume the current in the coaxial cable, see the figure , is not uniformly distributed, but instead the current density varies linearly with distance from the center: for the inner conductor and for the outer conductor. Each conductor still carrie..
Two parallel metal rods form a plane inclined at 20.0° to the horizontal. The upper end of the rods are connected together by a resistor of 122.0 ?. What is the maximum speed of the bar
Two 1000 kg cars drive east; the first moving at 25 m/s, the second at 15 m/s. What is the magnitude of the total momentum of the system
In a solar water heater, energy from the Sun is gathered by water that circulates through tubes in a rooftop collector. The solar radiation enters the collector through a transparent cover and warms the water in the tubes; this water is pumped int..
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