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A sample of helium behaves as an ideal gas as it is heated at constant pressure from 273K to 373K. If 20J of work is done by the gas during this process, what is the mass of helium present?
two diffraction gratings a and b are located at the same distance from the observation screens. light with the same
A student decides to move a box of books into her dormitory room by pulling on a rope attached to the box. The student now starts moving the box up a 10.0° incline, what is the new acceleration of the box
A Super Hero leaps with speed 12 m/s at a 47 degree angle above the horizontal from the top of a building. find the height of the building
One particle has a mass of 2.00 10-3 kg and a charge of +7 µC. A second particle has a mass of 5.00 10-3 kg and the same charge. Find the initial separation between the particles
An ice sheet with area 10:0 m x 10:0 m and uniform thickness of 1.20 m floats in the Arctic Ocean. Assume that the density of ice is 917 kg/m3, Find the buoyant force acting on the ice sheet
find the charge on the block. A very small charged block with a mass of 2.05g is placed on an insulated, frictionless plane inclined at an angle of 17° with respect to the horizontal.
Draw a free body diagram for each block in the system. Find the acceleration of the system and the tensions in the ropes. Coefficient of kinetic friction of 0.3 exists between the two blocks with no other frictional surfaces.
Three forces acting on an object are given by f1 = (?2.05i + 6.30j) N, f2 = (4.70i ? 1.95j) N, and f3 = (?42.5) N. What is the direction of the acceleration
question cesium atoms are the largest naturally occurring atoms. the radius of a cs atom is 2.62 angstroms. how many cs
a 5.0-liter gas tank holds 1.4 moles of helium monatomic and 0.7 moles of oxygen diatomic at a temperature of 260 k.
A satellite has a mass of 6000 kg and is in a circular orbit 4.10 x 105 m above the surface of a planet. What is the true weight of the satellite when it is at rest on the planet's surface
A high intensity desk lamp is rated at 45W but requires only 12V. It contains a transformer that converts 120V household voltage. What is the current in the secondary coil
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