Physics, 17.09.2019 18:30 Oliviapuffinburger33
In a local bar, a customer slides an empty beer mug down the counter for a refill. the height of the counter is 1.28 m. the mug slides off the counter and strikes the floor 0.40 m from the base of the counter. (a) with what velocity did the mug leave the counter? does the time required for the mug to hit the floor depend on its initial horizontal velocity? m/s (b) what was the direction of the mug's velocity just before it hit the floor? you appear to have correctly calculated the angle using your incorrect value from part (a).° (below the horizontal)
Answers: 3
Physics, 21.06.2019 14:00
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Answers: 2
Physics, 21.06.2019 22:00
Air is held within a frictionless piston-cylinder container, which is oriented vertically. the mass of the piston is 0.45 kg and the cross-sectional area is 0.0030 m2. initially (state 1) the pressure of the gas is sufficient to support the weight of the piston as well as the force exerted by the atmospheric pressure ( 101.32 kpa). the volume occupied by the air within the cylinder in state 1 is 1.00 liter. one end of a spring (with spring constant k = 1000 n/m) is attached to the top of the piston, while the other end of the spring is attached to a stage that can move vertically. initially the spring is undeflected and therefore exerts no force. then the stage is then moved quasistatically downward a distance of 10.0 cm, at which point the system reaches state 2. the piston-cylinder is not insulated; rather it remains in diathermal contact with the surroundings, which are at a constant temperature of 300 k. what is the change of pressure within the container?
Answers: 3
Physics, 21.06.2019 23:30
A175 g lump of molten lead at its melting point (327 c) is placed into 55.0 g of water at 20.0 c. the specific heat of lead is 130.j/kg c and the hf of lead is 20,400 j/kg. when the lead and the water have reached equilibrium, what is the temperature of the mixture?
Answers: 3
In a local bar, a customer slides an empty beer mug down the counter for a refill. the height of the...
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