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An archer shoots arrows at a target. Some of the arrows stick in the target, while others bounce off. Assuming that the masses of the arrows and the velocities of the arrows are the same, which arrows produce a bigger impulse on the target?
Hint: Draw adiagram to show the momentum of the arrows before and after hitting the target for the two instances.
A student eats a candy bar that may give 1.8 * 10^6 joules of energy. if the student has a mass of 60 kg, how high will he have a climb a ladder to offset completely the energy contained in the candy bar.
A volleyball is spiked so that it has an initial velocity of 14 m/s directed downward at an angle of 45 degrees below the horizontal. What is the horizontal component of the ball's velocity
Light inside an optical fiber tube hits the wall between the tube and air. What is the index of refraction of the tube
A 1600 kg car starts from rest at A, coasts 180m through a dip and comes to stop at B after coasting a distance d on level ground. If the rolling resistance is a constant force of 280N, conclude the distance d.
A 10:0 kg mass starts at the top of an incline that is 8:0 m long and makes an angle of 400 above the horizontal. As it slides down, there is a constant frictional force of 23:8 N . What is its speed at the bottom?
A generator is designed to produce a maximum emf of 150 V while rotating with an angular speed of 3600 rpm. how many turns of wire are needed
When a 65-kg person climbs into a 1000-kg car, the car'ssprings compress vertically by 2.8 cm. What will be the frequency of vibration when the car hits a bump
A person with a near-point distance of 37 cm is able to get a usable magnification of 15 with a particular magnifying glass. What is the friend's near-point distance
An MP3 player operates with a voltage of 3.7 V, and is using 0.28 W of power. Find the current being supplied by the player's battery
A string 2.0 m long is held fixed at both ends. If a sharp blow is applied to the string at its center, What are the lowest three standing wave frequencies for this string
A spring with spring constant of 29 N/m is stretched 0.21 m from its equilibrium position. How much work must be done to stretch it
A highway curve with radius 850 ft is to be banked so that a car traveling 48.0 mph will not skid sideways even in the absence of friction
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