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A car drives straight off the edge of a cliffthat is 54 m high. The police at the scene of the accident observethat the point of impact is 130m from the base of the cliff. How fast was the car traveling when it went over the cliff?
A person pulls a 5 kg sled by a rope across (nearly frictionless) ice. The rope (and therefore the force) is oriented 40 degrees above the horizontal. What is the horizontal acceleration of the sled
A rock of mass 0.19 kg falls from restfrom a height of 12 m into a pail containing 0.30 kg of water. Therock and water have the same initial temperature. The specific heatcapacity of the rock is 1820 J/(kg·C°).
A patient in therapy has a forearm that weighs 20.5N and lifts a 112.0N. The only other significant force on his forearm come from the biceps muscles (which acts perpendicularly to the forearm) and the forces at the elbow. If the biceps produce a ..
The archerfish successfully shoots down the resting insect by spitting water drops at the same angle 60^circ above the surface and with the same initial speed v as before. At what height h above the surface was the insect.
A spherical mirror is to be used to form a real image of an object that is located 5 meters from the object. What type of mirror needs to be used
If a steel ball with half the mass of the steel ball you used in class was used, what would its initial horizontal velocity be
A typical lightbulb in your house is rated 137 W, which means that the lightbulb dissipates 137 W when connected to a DC voltage of 110V. what is the dissipated power
If the coefficient of kinetic friction between a 30.0 kg crate and the floor is 0.33, what horizontal force is required to move the crate at a steady speed across the floor
An unstrained horizontal spring has a length of 0.34 m and a spring constant of 290 N/m. obtain the possible algebraic signs
q. a group of swimmers is resting in the sun on an off-shore raft. they estimate that 4.8 m separates a trough and an
A ball with a diameter of 10 cm is submerged in water. The buoyant force of the water on the ball is
Assume that the coefficient of friction between your hands is 0.5, that the normal force between your hands is 35 N, What is the rate at which heat is generated
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