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The volume of an ideal gas is adiabatically reduced from a volume of 200 L to a volume of 74.3 L. The initial pressure and temperature are 1.07 atm and 275 K. The final pressure is 4.00 atm.
(a) Is the gas monatomic, diatomic, or polyatomic?
(b) What is the final temperature? ___ K
(c) How many moles are in the gas? ___ moles
A 120 g trick baseball is thrown at 51 km/h. It explodes in flight into two pieces, with a 50 g piece regular straight ahead at 86 km/h. How much energy do the pieces gain in the explosion.
A worker on scaffolding 65 ft above the ground needs to lift a 340 lb bucket of cement from ground to a point 30 feet above the ground by pulling on a rope weighing 5 lb/ft. How much work is required.
A reading on a Geiger counter of 0.23 mrad/h is based on assuming that the measured radiation is due to cesium-137, How many ?-rays does the person's body absorb every second
What is wind velocity
A 400 g lemming (does anyone remember that old computer game?) waddles horizontally off a small 4.90 m high cliff with a speed of 0.5 ms-1.How far from the base of the cliff will the lemming land? What will be the lemmings speed upon landing.
An induction cooktop generates an alternating magnetic field B(t)=(0.25 T)cos??t. Calculate the maximum emf induced in a pan modeled as a ring of radius 10 cm
A ship sets out to sail to a point 141km due north. An unexpected storm blows the ship to a point 138 km due east of its starting point. (a) How far (in km) and (b) in what direction (as an angle from due east, where north of east is a positive an..
A 2 kg mass is pushed 0.5 m into a spring with spring constant 200 N/m on a frictionless horizontal surface. Upon release, the mass travels across the surface until it encounters a rough incline. The mass moves up incline and stops at a height of ..
A car of mass = 1200 traveling at 65 enters a banked turn covered with ice. The road is banked at an angle , and there is no friction between the road and the car's tires. What is the radius of the turn if = 20 (assuming the car continues in unifo..
A 330-power compound microscope has a 4.9mm focal-length objective lens. If the distance from eyepiece to objective is 12cm, what should be the focal length of the eyepiece
A spider of mass m is sitting in a perfectly symmetric web (in a vertical plane with 45 angles between the web lines), where Ti's denote the tensions along the lines that are connected to the spider at the center with i = 1, 2, 3, 4, 5, 6, 7, 8. The ..
The electric field everywhere on the surface of a thin spherical shell of radius 0.780m is measured to be equal to 940 N/C and points radially toward the center of the sphere.
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