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Steep safety ramps are built beside mountain highways to enable vehicles with defective brakes to stop. A 10-ton truck enters a 15?o ramp at a high speed v0 = 108 ft/s and travels for 6 s before its speed is reduced to 36 ft/s. Assuming constant deceleration, determine
(a) The magnitude of the braking force,
(b) The additional time required for the truck to stop. Neglect air resistance and rolling resistance.
A drill string made of 5-in OD, 4.276-in ID drill pipe is stuck when drilling at 11,000 ft. Find the change in hook load
Jimmy has caught two fish in Yellow Creek. He has tied the line holding the 3.0 kg steelhead trout to the tail of the 1.5 kg carp. To show the fish to a friend, he lifts upward on the carp with a force of 60 N. Draw a free-body diagram for the carp. ..
question1a skateboarder shoots off a ramp with a velocity of 5.3ms engaged at an angle of 59 degrees above the
A sound wave with intensity 23 mW/m2 interferes constructively with a sound wave that has an intensity of 16 mW/m2. What is the intensity of the superposition of the two
Find the minimum initial speed of a projectile in order for it to reach a height of 2135 km above the surface of the eartH
A ship sets out to sail to a point 212 km due north. An unexpected storm blows the ship to a point 156km due east of its starting point. How far must it now sail to reach its original destination.
A 0.55 kg book moves vertically upwarda distance of 10 m, and thenvertically downward 10 m, returning toits initial position. How much work is done by gravity during the upwardmotion of the book
Most asteroids are oblong in shape. Approximate an asteroid as being made up of two identical spheres of mass M and radius R that are just touching each other, in a figure eight
Contrast the center of gravity (CG) and center of mass (CM) of the moon. (Suppose the moon is spherical and centered means the center point of the sphere)
A "biconvex" lens is one in which both surfaces of the lens bulge outwards. What is the focal length f of this lens in air
What was the change in the potential energy of this charge?
Dizziness. Our balance is maintained, at least in part, by the endolymph fluid in the inner ear. Spinning displaces this fluid, causing dizziness, What is the radical acceleration (in m/s^2) of the endolymph fluid
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