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A ballot box with mass m = 6.0 kilogram slides with speed v= 4.0 m/s across a frictionless floor in the positive direction of the x axis. The box explodes into two pieces. One piece, with mass m1 = 2.0 kilogram, moves in the positive direction of the x axis v1= 8.0 m/s. Find the velocity of the second piece, with mass m2?
If a curve with a radius of 87 is perfectly banked for a car traveling 67 , illustrate what must be the coefficient of static friction for a car not to skid when traveling at 84 ?
1 what does it mean for an object to become electrically charged ?2 what is polarization?3 describe the process of
an electric current is given by the expression i t 100 sin 120pit where i is in amperes and t is in seconds. what is
If you lie on the ground at night with no cover, you get cold rather quickly. Much of this is due to energy loss by radiation. At night in a dry climate, Estimate the net rate at which your body loses energy by radiation to the night sky under thes..
a toy is launched upward with a spring.its launch speed is 114msupwardand it is under no power once launched.while
Calculate the momentum of a photon having a wavelength of 53.0 nm and Find the velocity of an electron having the same momentum
one mole of an ideal gas does 2600 j of work on its surroundings as it expands isothermally to a final pressure of 1.00
A wire 3.00 m long and 0.450 mm2 in cross-sectional area has a resistance of 39 at 20°C. what is the temperature coefficient of resistivity
A .450 H coil has an internal resistance of 35 Ω. it is connected in series with a 6.00μF capacitor in a 120 VAC 60 Hzcircuit. Find a) the reactance of the capacitor, b) the impedance of the inductor with its internal resistance, c) the current and t..
Some gliders are launched from the ground by means of a winch, which rapidly reels in a towing cable attached to the glider. Obtain what average power must the winch supply
Suppose we hang a heavy ball with a mass m = 17 kg (so the weight is mg) from a steel wire 2.5 m long that is 2 mm in diameter (radius = 1e-3 m). Calculate the stretch L of the steel wire
An electron moving at right angles to a 0.42 T magnetic field experiences an acceleration of 7.5 x 1015 m/s2. Find by how much does its speed change in 1 ns
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