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The tire on a bicycle is filled with air to a gauge pressure of 691 kPa at 20?C. What is the gauge pressure in the tire after a ride on a hot day when the tire air temperature is 48?C? (Assume constant volume and a constant atmospheric pressure of 101.3 kPa.) Answer in units of kPa.
Two protons, each having a speed of 0.970c in the laboratory, are moving toward each other. Determine the momentum of each proton in the laboratory
q1. as part of a safety investigation two 1300kg cars traveling at 18ms are crashed into different barriers. find the
A 13 g bullet traveling 215m/s penetrates a 2 kg block of wood and emerges cleanly at 157m/s. If the block is stationary on a frictionless surface when hit, how fast does it move after bullet emerges.
What is the resolving power of the objective if it is used in an oil-immersion microscope with n oil = 1.45
The Balmer series in atomic hydrogen is the series of wavelengths emitted by the electron when it makes a transition from an energy level with n > 2 to the n = 2 level, Find the four largest wavelengths in the Lyman series
The base of the cloud, which is roughly parallel to the Earth's surface, serves as the negative plate and the region of Earth's surface under the cloud serves as the positive plate. The separation between the cloud base and the Earth's surface is ..
What was the average acceleration throughout the trip
The resistivity of copper at room temperature is 17 x 10^-9 m Ohms. What diameter of copper wire is required to give a copper wire 10 meters long a resistance of 2 x 10^-3 Ohms?
Four horses are tethered at 4 corners of a square field of side 70 metres so that they just cannot reach one another. What is the area left ungrazed by the horses
A long solid cylindrical wire of radius 0.01 meters carries a current whose density (current per unit area) is given by J=0.02r^2.
A car drives straight off the edge of the cliff that is 56 m high. The police at the scene of the accident note that the point of impact is 128m from the base of the cliff. How fast was car travelling when it went over the cliff.
A helium ion (Q = +2e) whose mass is 6.6×10?27kg is accelerated by a voltage of 3700V, What is its speed? Express your answer to two significant figures and include the appropriate units
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