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A 11 kg block is at rest on a level floor. A 380 g glob of putty is thrown at the block such that it travels horizontally, hits the block, and sticks to it. The block and putty slide 15 cm along the floor. If the coefficient of sliding friction is 0.40, what is the initial speed of the putty?
m/s
A door made of a uniform piece of wood measures 1 m by 2 m and has a mass of 18 kg. Find the force (mag and direction) that the door exerts on the hinge
What would be the equilibrium temperature when a 253-g block of copper at 281^circ C is placed in a 137g aluminium calorimeter cup containing 817-g of water at 14.5^circ C.
A small droplet of oil with mass of 4.81×10-15 kg is held suspended in a region of uniform electric field directed upward with a magnitude of 7025 N/C
A woman is reported to have fallen 139 ft from a building, landing on a metal ventilator box, which she crushed to a depth of 30 in. She suffered only minor injuries.
a playground merry go round has a radius of 4.40 m and a moment of inertia of 245kg.m^2 and turns with negligible friction about a vertical axle through is center. What is the average power supplied by the child
A review of the basics of circular motion: The radius of a merry-go-round is 5 meters, and it takes 12 seconds to go around once. What is the direction of the velocity of this atom
A gas contains NO2 molecules at 30 °C. The mass of a N02 molecule is 1.53 · 10-26 kg. What is the average speed of the molecules
What is weight of the parachutist
A converging lens and a diverging lens, separated by a distance of 30.0 cm, are used in combination. Calculate the focal length of the diverging lens
In the hydrogen atom the radius of orbit B is 16 times greater than the radius of orbit A. What is the total energy of the electron in orbit B
A point charge q = +4.3 µC is placed at each corner of an equilateral triangle with sides 0.21 m in length. What is the magnitude of the electric field at the midpoint
define How long are the skid marks. calculate the time it takes the sled to go 21 m down the slope.
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