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A 1.5 kilogram block is at rest on a ramp of height h. When the block is released, it slides without friction to the bottom of the ramp, and then continues across a surface that is frictionless except for a rough patch of width 10 cm that has a coefficient of friction µk=0.640 with the block. Find h if the block's speed after crossing the rough patch is 3.5 m/s.
A thick layer of oil is floating on the surface of water in a tank. A beam of light traveling in the oil is incident on the water interface , What is the refractive index of the oil
In an earthquake waves of several types move through the Earth and along its surface. One type is transverse waves that move along thesurface of the ground (these are the most destructive). You canthink of them as just like the waves you are used ..
The asteroid 243 Ida has a mass of about 4.0×1016 kg and an average radius of about 16 km, How long would it take for your rock to return and hit you in the back of the head
Three balls A, B, and C, with masses of 2.7 kg, 1.1 kg, and 1.2 kg, respectively, are connected by massless rods, find the acceleration of the center of mass of the three-ball system
A solid block is attached to a spring scale. When the block is suspended in air, the scale reads 21.1 N; when it is completely immersed in water, What is the volume of the block
A 82 kg diver steps off a 13 m tower and drops from rest straight down intothe water. If he comes to rest 4.5 mbeneath the surface, determine the average resistance force exertedon him by the water.
What is its velocity when it reaches the maximum height.
A nuclear power reactor generates 4.2 × 109 W of power. In one year (365.25 days), what is the change in the mass of the nuclear fuel
question a spacecraft approaching the earth launches an exploration vehicle. after the launch an observer on earth sees
Cart A, with a mass of 2 kg, travels on a horizontal air-track at 3 m/s and hits cart B, which has a mass of 4 kg and is initially at rest. what is the speed of the center of mass of the two-cart system
a glass window pane is 1.2 m wide 1.5 m wide and 3 mm thick. the temperature at the inner surface of the glass is 22o c
in the x-y plane a charge of -4.6 uc is on the x-axis at the point -30cm0 and a second charge of 7.2 uc is located on
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