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A 9.00 bullet has a speed of 1.10 km/s.
1. What is its kinetic energy in joules?
2. What is the bullet's kinetic energy if its speed is halved?
3. If its speed is doubled?
Assume, instead, that the observer had been moving away from Earth with a speed of 0.80c. How much time would observer have measured for the car to be filled in this case.
Assuming the sun to be a blackbody with a surface temperature of 6000K, Determine the loss in solar mass per day due to this radiation
The current in a 100 watt lightbulb is 0.790A. The filament inside the bulb is 0.200mm in diameter. What is the current density in the filament
The catapult on an aircraft carrier can take an aircraft from 0 to 216 mph in 8 seconds, at which time the aircraft launches
Throughout three hours one winter afternoon, when outside temperature was 9° C, a house heated by electricity was kept at 21° C with the expenditure of 46kwh (kilowatt•hours) of electric energy.
A stereo speaker has a surface area of 0.043 m^2. The acoustic power output of the speaker is 1.7 W. Calculate the intensity of the speaker
A -3.07 ?C charge is placed at the center of a conducting spherical shell, Calculate the total charge on the outer surface of the conductor
The average lifetime of a pi meson in its own frame of reference (i.e., the proper lifetime) is 2.6 10-8 s. What distance would it travel if time dilation did not occur
When the plane atats to accelerate for take off, a man is holding the pocket watch steady by its 20cm chain, Estimate the takeoff velocity of the plane
A source emits sound uniformly in all directions. There are no reflections of the sound. At the distance r1 from the source the sound is 3.9 dB louder than it is at a distance r2 from the source. What is the ratio r1/r2.
q1. sphere pendulum has mass of 1.5 kg attached to a cord length of 11.5 m sphere is released from rest while cord
Assuming that the ram spring is oriented vertically and is still compressed by 1.17 10-2 m when the downward-moving ram hits the staple, find the speed of the ram at the instant of contact
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