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An animal-rescue plane flying due east at 36.0 m/s drops a bale of hay from an altitude of 60.0 m. If the bale of hay weighs 175 N, what is the momentum of the bale the moment before it strikes the ground? Give both direction and magnitude.
Find out the net force exerted on the fluid inside the box by summing momentum flow rates out through each of four sides of the box.
A particle with a mass of 3.00 10-20 kg is oscillating with simple harmonic motion with a period of 3.50 10-5 s and a maximum speed of 8.00 103 m/s. Calculate the angular frequency of the particle
A 1000-kg car travelling at a speed of 32 m/s skids to a halt on wet concrete where f_k = 0.3. How long are the skid marks.
An electron that has velocity v = (2.0 x 106 m/s)i +(3.0 x 106 m/s) j moves through the uniform magneticfield B = (0.30 T)i - (0.15 T)j. Find the force on the electron
In the amusement park ride known as Magic Mountain Superman, Find the average net force exerted on the car and riders by the magnets
A shell, fired from a cannon, has a muzzle speed (the speed as it leaves the barrel) of 800 ft/s. The barrel makes an angle of 45o with the horizontal and, for ease; the barrel opening is assumed to be at ground level.
An observer stands 23.1 meter behind marksman practicing at a rifle range. Calculate how far does each bullet travel before the observer hears the report of the rifle
The speed distribution of molecules in the Earth's atmosphere has a significant impact on its composition. What is the average speed of a nitrogen molecule in the atmosphere
Consider a horizontal square plate capacitor of area 1*1m2, capacitance in vacuum 4 μF, which contains a dielectric material by dielectric constant K=3. The dielectric slides frictionless and is attached via a mass less string and a mass less pulley ..
a convex mirror with a focal length of - 85 cm is used to give a truck driver a view behind the vehicle. if a person
A rubber ball (150g) confined to move in the x direction, bounces elastically back and forth at 9m/s between two walls, Calculate the average pressure on this wall
A parallel-plate capacitor consists of two large circular sheets of metal separated by 1.53 cm. The electric field energy density among plates is 4.41 J/m3 while the capacitor holds 0.127 J of potential energy. What is the radius of the circular plat..
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