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A cube of wood having an edge dimension of 20.0 cm and a density of 650 kg/m3 floats on water.
(a) What is the distance from the horizontal top surface of the cube to the water level?
(b) What mass of lead should be placed on the cube so that the top of the cube will be just level with the water surface?
Two tuning forks oscillating coherently and in phase at 12000Hz are separated by 0.35m. What is the phase angle difference between the waves
An electron of mass 9.11 10-31 kg has an initial speed of 2.80 105 m/s. Determine the magnitude of the force exerted on the electron
An airtight box has a removable lid of area 1.10 multiplied by 10-2m2 and negligible weight. The box is taken up a mountain where the air pressure outside the box is 0.80 multiplied by 105 Pa.
A battery of internal resistance r = 0.2 and emf E = 12.0 V. If the battery is connected to a device of resistance 6.0 (ohms), What is the electric power output of the battery
On a spacecraft two engines fire for a time of 589 s. One gives the craft an acceleration in the x direction of ax = 5.05 m/s2, Calculate the magnitude of the initial velocity
A gas is allowed to expand isothermally until it reaches its final volume and its pressure is 2.97 atm. Find the heat absorbed by the gas during this process
Light behaves primarily as a wave when it...
Passengers on The Tower of Doom, a free-fall ride at Six Flags America, sit in cars that are raised to the top of a tower. How high is the tower
questionan insulated thermos contains 149 g of water at 71 c. you place in a 10.7 g ice cube at 0 c to form a system of
q1. a woman is riding a boat at the speed of v when she notices a seawall straight ahead. the farthest she can lean the
A motorcycle starts with a constant acceleration of 3.0 m/s^2. At just that instant a buick with a constant speed of 20 m/s passes the motorcycle, How fast is the motorcycle travelling when it overtakes the buick
A bowling ball, which can be treated as a solid sphere with a diameter of 21.6 cm and a weight of 33 kg, The kinetic energy of the bowling ball is
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