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A train with a constant velocity of +28.6 m/s approachesa small town. The operator applies the break, reducing the trainsvelocity to +11.4 m/s. If the average acceleration during breakingis -1.35 m/s, what elapse time does operator apply break?
describe in general terms how we may be able through some simple experiments determine the mass of the
Two small-sized objects are placed on a uniform 9.00 {\rm kg} plastic beam 3.00 {\rm m} long, Find the location of the center of mass of this system by setting x=0 at the right end of the beam
Suppose a monochromic light strikes a grating at normal incidence. The first order diffractions lines appear at the angle 23°, what is the frequency of the light that passes through
a particle with a mass of 3 mg and a charge of q is moving at a speed of 1300 ms along a horizontal path 14 cm below
in reference framnbsps two protons each moving atnbsp0.59c approach each other head-on.a calculate the total kinetic
A wire of length l = 12.0 cm is moving with constant velocity in the xy-plane; the wire is parallel to the y-axis and moving along the x-axis. what must the velocity of the wire be
The rotor (flywheel) of a toy gyroscope has mass 0.150 kg. Its moment of inertia about its axis is 1.20x10^-4kgm^2. Find the upward force exerted by the pivot
The ammonia molecule NH3 has adipole moment of 5.2e-30 C·m. Ammonia molecules in the gasphase are placed in a uniform electric field with magnitude 1530000N/C.
A panda, Molly, decides to take a slide down an incline plane. She starts at the top. Her initial speed is 0 m/s. What is her final velocity at the bottom of the hill
One mole of a dilute gas initially has a pressure equal to 1.00 atm, and a volume equal to 13.0 L and an internal energy of 1.98 kJ. As the gas is slowly heated, Find the heat absorbed by the gas
A weather balloon contains 12.0 m3 of hydrogen gas when the balloon is released from a location at which the temperature is 22.0°C, what is the new volume of the balloon
A 0.750 kg ball falls directly down onto concrete, hitting it with a speed of 12.0 m/s and rebounding directly upward with a speed of 3.00 m/s. What is the impulse on the concrete
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