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a 50 kg block just starts to slide down a slope inclined at 30 degrees with respect to the horizontal. after sliding 5m down the slope, it is moving at 3 m/s.
a) calculate the work done by the kinetic frictional force that acts on the block.
b) what is the magnitude of the kinetic frictional force?
A patients heart pumps 4.2L of blood per minute into the aorta, which has a diameter of 2.2cm. find the average mechanical power output of the heart
q1. an airplane is flying with a velocity of 83.0 at an angle of 25.0 above the horizontal. when the plane is a
An electron is released from rest at the negative plate of a parallel plate capacitor. How fast is the electron moving just before it reaches the positive plate
Analog data having highest harmonic at 30 kHz generated by a sensor has been digitized using 6 level PCM
Find the far point of an eye for which a prescribed lens has an optical power of -0.62 d
the wire unwinds without stretching or slipping, causing the pulley to rotate. Explain how far must the stone fall so that the pulley has 2.70 J of kinetic energy?
Dust particles are pulverized rock, which has density 2500 kg/m3. They are approximately spheres 20 ?m in diameter. what is the root-mean-square speed (thermal speed) of a dust particle at 60°C
Two balls undergo a perfectly elastic head-on collision, with one ball initially at rest. If incoming ball has a speed of 200 m/s. What is the final speed of the incoming ball if it is much more massive than stationary ball.
q1. a car of mass 1100 kg travelling at 50.0kmhr enters a banked turn covered with ice. the road is banked at an angle
A rifle bullet with mass 8.00g strikes and embeds itself in a block with a mass of 0.992 kg that rests on a frictionless, Find the magnitude of the block's velocity just after impact
an organ pipe is 2.0m long.Assume the pipe is cylindrical with one closed and one open end. what is the longest wavelength for a standing sound wave
You are walking along a small country road one foggy morning and come to an intersection. At what speed is the ambulance traveling
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