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A 6.5 kg block is on an incline with a coefficient of static friction of 0.50. The angle that the ramp makes with the horizontal is increased gradually, until the block begins to slide down the ramp. If you know that the coefficient of kinetic friction among the block and the plane is 0.35, discover the time it will take the block to slide down the ramp a distance of 0.85 m starting from rest.
Calculate the angular velocity the flywheel must have to contain enough energy to take the bus from rest to a speed of 27.0 m/s, assuming 83.0% of the rotational kinetic energy can be transformed into translational energy
a 900 kg crate is on a rough surface inclined at 30 degrees. a constant force p7200n is applied horizontally to the
A pump draws water through a 150 mm diameter pipe from a reservoir whose surface level is at datum level and discharges it through a 100 mm diameter pipe to another reservoir whose surface level is 72 m above datum level.
Shaving/makeup mirrors typically have one flat and one concave (magnifying) surface. What is the focal length of the mirror
A 1500kg car moving at 40Km/hr is brought to a sudden stop. If all the car's kinetic energy is dissipated in heating its four 5.0kg steel brake disks, by how much do the disk temperatures increase? The specific heat of steel is c=0.120cal/gdegree Cel..
A rocket of mass 4.5 x 105 kg is in flight.Its thrust is directed at an angle of 54.0° above the horizontal and has a magnitude of8.90 x 106 N. Find the magnitude and direction of the rockets acceleration. Give the direction as an angle above the hor..
A lightweight string of length 60cm is attached to the ceiling at points separated by distance. Three objects of equal mass are hung from the string, separating the string into 4 equal segments of length L. If θ = 40, find the measure of angle φ a..
A small insect viewed through a convex lens is 1.5 cm from the lens and appears three times its actual size. What is the focal length of the lens?
Light of wavelength 580nm illuminates a diffraction grating. The second-order maximum is at angle 41.5 degrees
The dry weight of a man is 845 N. When he is submerged underwater, What is the volume of the man
the electric field on the axis of a uniformly charged ring has magnitude 390knc at a point 6.2cm from the ring center.
question1a rifle is expected horizontally at a target 28m away. the bullet hits the target 2.7 cm below the aiming
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