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A 25 g bullet traveling at 475 meter per second hits a tree and slows uniformly to a stop while penetrating a distance of 6.75 centimeter in the tree's trunk.
(a) Find the force exerted in the bullet by the tree to bring the bullet to a stop?
(b) Find how much work did the tree have to do to stop bullet?
(c) Use the energy equations to find the highest point the bullet could reach of the gun was shot straight up into the air.
Nichrome wire of cross-sectional radius 0.758 mm is to be used in winding a heating coil. compute the length of the wire you must use to wind the coil?
A 23 kg boom of length 6 m is supported by a cable that has a breaking tension of 1200N. The cable is perpendicular to the boom and is attached 4.5m from the pivot. What is the utmost load that can be suspended from the end of the boom.
A beam contains 8.4 x 108 doubly charged positiveions per cubic centimeter, all of which are moving north with aspeed of 4.2 x 105 m/s. What is the magnitude of the current density?
A 25 kg child at a playground runs with an initial speed of 2.5 m/s along a path tanget to the rim of a merry-go-round with a radius of 2.0 m and jumps on. Find the angular velocity of the child and merry-go-round
What is the force on the bottom of a 36.0 cm tall cylindrical beaker with a diameter o 6.0 cm with water filled to its brim, answers in N.
A woman holds a tube of lipstick 8 cm from a spherical mirror and notices that the image of the tube is upright and one third its normal size. find what is the position of the image
The elementary particle called a muon is unstable and decays after 2.20 ?s, as observed in its rest frame, What lifetime do you observe for the muon
Three capacitors, C1 = 3.30 µF, C2 = 7.26 µF, and C3 = 1.23 µF, are connected in series, What is the charge on the positive plate of the capacitor C2
An object of mass = 2 kg is pulled by a constant force F = 5 N oriented at an angle of 30° with respect to the horizontal, for a horizontal distance of 2 m. What is the work done by force F? Do not consider friction.
A physical pendulum is constructed using a 2 kg object having a moment of inertia of 25.9 kg-m2 about its center of mass. The rotation (suspension) point is 970.5 cm from the center of mass. What is the period of this physical pendulum?
At a coal burning power plant a steam turbine is operated with a power output of 483 MW. Determine at what rate is heat discarded to the environment by this power plant
Describe briefly a current health problem. A father racing his son has half the kinetic energy of the son, who has one-third the mass of the father. The father speeds up by 2.5 m/s and then has the same kinetic energy as the son.
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