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A monkey escapes from the zoo and climbs a tree. After failing to entice the monkey down, the zookeeper fires a tranquilizer dart directly at the monkey. The clever monkey lets go at the same instant that dart leaves the gun barrel, intending to land on the ground and escape. Show that the dart always hits the monkey, regardless of the darts muzzle velocity (provided that it gets to the monkey before it hits the ground.)
The speed of the block at the bottom of the track is vA = 13.1 m/s, and block experiences an average frictional force of 7.00 N while sliding up the track.
A metal ball of mass 0.66 kg with initial temperature of 30oC is dropped in to a container of 1.08 kg of water at 20oC. If the final temperature is 20.4 oC, what is the specific heat of the metal to the nearest tenth of aJ/kg·K?
A box full of books rests on a wooden floor. The normal force the floor exerts on the box is 236 N. (a) You push horizontally on the box with a force of 129 N, but it refuses to budge.
An electron moves in the positive x-direction a distance of 2.31 m in 2.85·10-8 s, bounces off a moving proton, and then moves in the opposite direction a distance of 1.53 m in 3.33·10-8 s.
The longest recorded pass in an NFL game traveled 86 yards in the air from the quarterback to the receiver.Assuming that the pass was thrown at the optimal 45 angle, what was speed at which the ball left the quarterback's hand.
A 2m long pendulum with a mass of 250gr collides with a 95gr sticky ball seating in the pendulum's path and at the edge of a horizontal surface. The collision takes place while the pendulum is passing by its lowest point.
An automobile crankshaft transfers energy from the engine to the axle at the rate of 53.6 kW when rotating at a speed of 1250 rev/min. What torque does the crankshaft deliver?
Two musicians are comparing their clarinets. The first clarinet produces a tone that is known to be 442Hz, If the second clarinet produces a higher pitched tone than the first clarinet, what is the second clarinet's frequency
parallel-plate capacitor with area 0.500m^2 and plate seperation of 2.00mm is connected to a 9.00-V battery. Find the magnitude of the charge density on each plate
The unpolarized light of intensity I(not) is passed through two polarizers with axes oriented at 30degrees from each other. What intensity of light emerges
A black furnace of surface area A = 3.0 m2 is fired up. Its outside temperature reaches 450oC. Calculate the net loss of power (in watts) by the furnace
The liquid-drop model of the atomic nucleus suggests high-energy oscillations of certain nuclei can split the nucleus into two unequal fragments plus a few neutrons, Calculate the electric potential energy (in electron volts) of two spherical fragm..
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