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During a hard sneeze, your eyes might shut for 0.38 s. If you are driving a car at 96 km/h during such a sneeze, how far does the car move during that time?
A police siren has a frequency of 550 Hz as the police car approaches you and a frequency of 450 Hz after it has passed you and receding, What is the true frequency of the police siren
An object initially at rest breaks into two pieces as a result of an explosion. One piece has twice the kinetic energy of the other piece. What is the ratio of the masses of the two pieces
A trayson crystal torpedo, traveling at 2.40 x 10^6 m/s, is lanuched against the Zargon B-Class Warship. How long(in time) must the pusle be to stop the torpedo
birds resting on high-voltage power lines are a common sight. the copper wire on which a bird stands is 2.5 cm in
During normal operation, a computer's hard disk spins at 5400 rpm. what is the average angular acceleration of the hard disk
there is a current of 0.40 a flowing through a light bulb when it is connected to a 12.0 v battery. a what is its
A solid, square pinewood raft measures 3.0 m on a side and is 2.30 m thick. What is the total mass of swimmers that the raft can carry and float by its top surface at water level?
Hydraulics is used on many cars for operating brakes. The normal force among the brake pads and rotor needs to be 1500Newtons, and your pump can supply a pressure of 225 PSI. What is the diameter of the cylinder/piston (in cm.)?
In the Bohr model of hydrogen, the electron moves in a circular orbit around the nucleus. Determine the angular speed of the electron
A rotating cylinder about 18km in length and 6km in diameter is designed to be used as a space colony. With what angular speed must it rotate so that residents on it will experience the same acceleration because of gravity on Earth.
You wish to observe the progress of your vacuum pump in evacuating a tall bell jar for the purpose of demonstrating that sound waves do not travel in a vacuum
The left ventricle of the heart accelerates blood from rest to avelocity of +24cm/s. How much time does blood take to reach its final velocity?
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