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Why does air circulate from a point with less pressure towards one with more pressure? (We have a tunnel, and on one side the wind blows faster than at the other)
A puck of mass m = 1.50 kg slides in a circle withradius r = 20 cm on a frictionless table while attachedto a hanging cylinder of mass M =2.50 kg by a cordthrough a hole in the table. What speed keeps the cylinder atrest
A charged paint is spread in a very thin uniform layer over the surface of a plastic sphere of diameter 12.0 cm, giving it a charge of -15.0 microC. find the electric field: (a) just inside the paint layer, b) just outside the paint layer and c) 5..
determine the mass of liquid ammonia that boils away before thermal equilibrium. Assume an excessive amount of liquid ammonia is present and that the liquid ammonia does not react with the copper.
q1. a 78.9 kg man steps off a platform 4.57 m above the ground. he keeps his legs straight as he falls but at the
A physics book slides off a horizontal tabletop with a speed of 2.70m/s . It strikes the floor in 0.350s. Find the direction of book's velocity, just before the book reaches the floor
The space shuttle is in a 150km -high circular orbit. It needs to reach a 590km -high circular orbit to catch the Hubble Space Telescope for repairs. How much energy is required to boost it to the new orbit
A playground is on the flat roof of a city school, 4.6 m above the street below (see figure). The vertical wall of the building is h = 6.10 m high, forming a 1.5-m-high railing around the playground. Find the vertical distance by which the ball cle..
A series RLC circuit has components with the following values: L = 18.0 mH, C = 90.0 nF, R = 10.0 ?, and ?Vmax = 100 V, with ?v = ?Vmax sin ?t. Find the resonant frequency of the circuit
A neutrino must pass within about 10^-18m of a quark to have any chance of interacting with it. estimate the average distance (in light years) that a neutrino would travel through the lead before it interacts
A sound wave is traveling in seawater, where the adiabatic bulk modulus and density are 2.3 109 Pa and 1025 kg/m3, respectively. What would be the beat frequency heard by an underwater swimmer
A carefully designed experiment can measure the gravitational force between masses of 3 kg. Given that the density of iron is 7860 kg/m3, what is the gravitational force between two 3.00-kg iron spheres that are touching?
A spring with a spring constant of 100N/s is compressed adistance of 0.1m horizontally. What is the maximum speed attained by the mass
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