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A particle leaves the origin with a speed of1 × 106 m/s at 30? to the x axis. It moves in a constant electric field E = Eyˆj. Find Ey such that the particle will cross the x axis at x = 2.5 cm if the particle is an electron. The fundamental charge is 1.602 × 10-19 C, and the masses of the electron and proton are 9.11 × 10-31 kg and 1.6726 × 10-27 kg, respectively.
Water at a pressure of 3.2 atm at street level flows into an office building at a speed of 0.5 m/s through a pipe 5.6 cm in diameter. Calculate the water pressure in such a pipe on the top floor
A satellite in a circular orbit around the earth with a radius 1.021 times the mean radius of the earth is hit by an incoming meteorite. Calculate the amount of that work converted to heat
A copper bar is moved to the right while its axis is maintained in a direction perpendicular to a magnetic field, what is the direction of the magnetic field
a piano tuner stretches a steel piano wire with a tension of 765 . the steel wire has a length of 0.800 and a mass of
an 30-kg person puts on a life jacket jumps into the water and floats. the jacket has a volume of 3.4 x 10-2 m3 and is
Two 50 ohm resistors are connected in series to a 12 volt battery. What is the total resistance of the circuit
A rifle with a weight of 40 N fires a 3.5 g bullet with a speed of 240 m/s. find the recoil speed of the man and rifle
A solenoid is formed by winding 11.0 m of insulated silver (resistivity 1.59 x 10-8 Ω·m) wire around a hollow cylinder. The turns are wound as closely as possible without overlapping and the insulating coat on the wire is negligibly thin.
Suppose you throw a 0.048-kg ball with a speed of 10.7 m/s and at an angle of 32.1° above the horizontal from a building 11.5 m high. What will be its kinetic energy when it hits the ground
ultraviolet light with a wavelength of 60nm shines on a gas of hydrogen atoms in their ground states. some of the atoms
How fast must the car be travelling just as it leaves the cliff in order to clear the river and land safely on the opposite side.
At the Earth's surface, a projectile is launched straight up at a speed of 10.4 km/s. Determine to what height will it rise
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