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A rifle with a weight of 35 N fires a 5.5 g bullet with a speed of 200 m/s.
(a) Find the recoil speed of the rifle. m/s
(b) If a 725 N man holds the rifle firmly against his shoulder, find the recoil speed of the man and rifle. m/s
A ball is thrown at a 60.0° angle above the horizontal across level ground. It is released from a height of 2.00 m above the ground with a speed of 16.0 m/s.
A 3.8-kg block of iron (c=0.11 kcal/kgoC) that has been brought to a temperature of 1,078oC is placed on top of a 2.4-kg block of ice (c=0.5 kcal/kgoC) that has been cooled to -50oC
A sound wave generated by a source of frequency 440 Hz is moving through 25 oC air. What is the wavelength of the sound wave inside the steel
An electron travels with speed 1.0*10^7 m/s between two parallel charged plates. The plates are separated by 1.0 cm, What is the direction of the magnetic field
An astronaut in space cannot use conventional means, such as a scale or balance to determine the mass of an object. What is the mass of this canister
The given information is that a basketball is shot from an initial height of 2.40 m with an initial speed 14m/s directed at an angle 37 degrees above the horizontal
A 70·kg packing crate is pulled with constant speed across a rough floor with a rope that is at an angle of 37.0° above the horizontal. What is the total work done on the box by all forces
Find out the magnitude of the wind velocity. Find the direction of the wind velocity.If the wind velocity is 39 due south, in what direction should the pilot set her course to travel due west? Use the same airspeed of 213 .
What is the maximum possible temperature of the cold reservoir.
A drop of unknown liquid is placed at the point on a glass surface where internal reflection is occurring at ? = 48°. What is the refractive index of the liquid
Two balls of the same mass areaccelerated by the different net forces such that one ball gains avelocity twice that of the other ball in the process.
A copper rod has a length of 1.4 m and a cross-sectional area of 3.8 10-4 m2. One end of the rod is in contact with boiling water and the other with a mixture of ice and water. What is the mass of ice per second that melts
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