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A 18 liter tank of helium is at a pressure of 192 kPa at a temperature of 0 C. A.) How many moles of helium are there in the tank? B.) If the volume of the tank expands to twice its initial volume at constant pressure, what is the new temperature? C.) What is the speed of the helium atoms in the tank at this new volume?
How far will it coast before starting to roll back down. In addition, snow exerts a retarding force on the sled that points opposite to the direction of motion, and has a magnitude of 57 N. Find the acceleration of the sled and child.
At a factory, a noon whistle is sounding with a frequency of 480-Hz. As a car travelling at 79 km/h approaches the factory, the driver hears the whistle at frequency fi. After driving past the factory.
Find out the induced emf in the loop at an instant
End A of the bar AB rests on a frictionless horizontal surface, and end B is hinged. A horizontal force vec F of magnitude 107 {rm N} is exerted on end A. You can ignore the weight of the bar. What is the vertical component of the force exerted by..
A shell of mass m and speed v explodes into two identical fragments. If the shell was moving horizontally (the positive x direction) with respect to Earth, and one of the fragments is subsequently moving vertically with speed v, find out the velocity..
Question on constant speed
compute the distance from the central maximum to the first bright region on either side of the central maximum.
A Ferris wheel is a vertical, circular amusement ride with radius 6 m. Riders sit on seats that swivel to remain horizontal. The Ferris wheel rotates at the constant rate, going around once in 6.4 s. Consider a rider whose mass is 70 kg.
For the motion from the initial free until the piece of wood comes to rest, what is the total amount of work completed by friction.
A box weighing 300N is shoved across the floor of an apartment by a force of 400 N exerted downward at an angle of 35.2° below the horizontal. If the coefficient of kinetic friction between the box and the floor is 0.540, how long does it take to mov..
An emf is induced in a conducting loop of wire 1.11m long as its shape is changed from square to circular.Find the average magnitude of induced emf if the change in shape occurs in 4.03s and the local 0.135-T magnetic field is perpendicular to the ..
Two sound sources radiating in phase at a frequency of 485 Hz interfere such that maxima are heard at angles of 0 and 22° from a line perpendicular to that joining the two sources. Find out the separation between the two sources.
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