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A puck is sliding on flat ground with an initial speed to 7 m/s and comes to rest after 1.25 s. Approximately which is the coefficient of kinetic friction between the puck and the ground?
Intense white light is incident on a diffraction grating that has 720 lines/mm. What is the angular separation between the violet edge (400 nm) and the red edge (700 nm) of the first order spectrum produced by the grating
A bacterium (mass = 2.26 x 10?15 kg) in the blood is moving at 0.389 m/s. What is the de Broglie wavelength of this bacterium
Two charges are placed on the x axis. One of the charges (q1 = +6.95C) is at x1 = +3.00 cm and the other (q2 = -27.3C) is at x2 = +9.00 cm. Find out the net electric field (magnitude and direction given as a plus or minus sign) at (a) x = 0 cm and (b..
In the figure, a man is standing near a gate and a flag pole. The gate is 15 ft from the pole. How far is the man from the gate
A pendulum of Length L= 42.1cm and mass m=169g is released from rest when the cord makes an angle of 65.4 degrees with the vertical
In a television picture tube, electrons strike the screen after being accelerated from rest through a potential difference of 18000V. The speeds of the electrons are quite large, and for accuratecalculations of the speeds, the effects of special r..
A transverse sinusoidal wave on a string has a period T =28.0 ms and travels in the negativex direction with a speed of 25.0 m/s. What is the initial phase angle
A large water tank has an inlet pipe and an outlet pipe. The inlet pipe has a diameter of 3 cm and is 1 m above the bottom of the tank. What is the velocity of the water in the outlet pipe
A truck covers 40.0 meter in 7.05 second while smoothly slowing down to a final velocity of 2.95 m/s. Determine the truck original speed
You wind up and throw a 10 kg medicine ball horizontally with a speed of 1.3 m/s directly at your 24-kg little brother. find the common speed of the ball-brother composite
A 22 g ice cube at its melting point is dropped into an insulated container of liquid nitrogen. How much nitrogen evaporates if it is at its boiling point of 77 k and has a latent heat of vaporization of 200 kJ/kg? Assume for simplicity that the spec..
A partially evacuated airtight container has a tight-fitting lid of surface area 81.7 cm2 and negligible mass. what is the air pressure in the container before it is opened
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