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A ball is dropped vertically from a height of 1.5 m; it bounces back to a height of 1.3 m. Does this violate the law of conservation of energy? Explain.
A steam catapult launches a jet aircraft from the aircraft carrier John C. Stennis, giving it a speed of 165 mi/h in 2.30 s. Find the average acceleration of the plane
In a darkened room we place a lighted tungsten bulb in a box that has one end covered with tinfoil. If we make a pinhole in the tinfoil, an image of filament appears on a screen facing the tinfoil.
A 1500 kg car has a speed of 35 m/s. If it takes 7 s to stop the car, what is the impulse and the average force acting on the car
two cylindrical glass beads each of mass m 13.5 mg are set on their flat ends on a horizontal insulating surface
Assuming the loss resistance of a half-wave dipole antenna to be negligibly small and ignoring the reactance component of its antenna impedance.
A pressure gauge on a welder´s tank gives a reading of 22.4 psig. The barometric pressure is 28.6 in. Hg. Calculate the absolute pressure in the tank
Starting from rest, a 4.50-kg block slides 3.00 m down a rough 30.0° incline. The coefficient of kinetic friction between the block and the incline is ?k = 0.436. Determine the work done by the force of gravity
a rod extending between x0 and x14.0 cm has uniform cross-sectional area a9.00 cm2. its density increases between its
A ball of m1 is held slightly above ball of mass m2. The two balls are droped simultaneously, falling distance h vertically from rest. Calculate the height to which the first ball rebounds
You have projected your depreciation expense to be $1,000,000 in the next fiscal year with year-end accumulated depreciation balances being $5,000,000.
A bird stands on a dc electric transmission line carrying 2540 A, What is the potential difference between the bird's feet
A blue car accelerates at a rate of 10 m/s2 , while the read car accelerates at a rate of 12 m/s2. What is the speed of the winning car as it passes the finish line
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