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An electron that has a horizontal initial speed of 4.50 106 m/s enters a region that has anelectric field of 120 V/m pointingvertically upward.(a) How long does the electron take to travel19 cm in the horizontal direction?2_____ s(b) In this same time, what is the vertical displacement of theelectron? Treat up as positive.3_____ cm
A person opens a door by applying a 17 N force perpendicular to it at a distance 0.90m from the hinges. What was the average power delivered
Compute the horizontal distance traveled by the shot if it leaves the athlete's hand at a height of 2.10 m above the ground.
In 1996, the Solar and Heliospheric Observatory (SOHO) was "parked" in an orbit slightly inside the earth's orbit. Calculate SOHO's distance from the earth
q. a 0.500 rm kg glider on an air track is attached to the end of an ideal spring with force constant 459 rm nrm m it
What are the lowest and the highest frequencies. calculate the acceleration of the crate.
In constructing a large mobile, an artist hangs an aluminum sphere of mass 5.3{\rm kg} from a vertical steel wire 0.42{\rm m} long and 3.0×10?3{\rm cm^2} in cross-sectional area. Compute the elongation strain for the bottom wire
At t = 0 the current to a dc electric motor is reversed, resulting in an angular displacement of the motor shaft given by ?(t) = (240 rad/s)t ? (21.0 rad/s2)t2 ? (1.60 rad/s3)t3. At what time is the angular velocity of the motor shaft zero
In the Bohr model of the hydrogen atom, an electron moves in a circular path around a proton. The speed of the electron is approximately 2.51 106 m/s. Find the centripetal acceleration of the electron
A battery labeled 12.0 V supplies 1.63 A to a 5.5 resistor, What is the terminal voltage of the battery
a bottle has a mass of 35 g when empty and98.45 g when filled with water. what is the specific gravity of the other fluid
A ball is thrown vertically upward with an initial speed of 10m/s from the top of a building, at a height of 25m from the ground. How long does the ball take to reach the ground
Two disks have equal masses, m, and radii, R. Their moments of inertia are each .5mR^2. find the acceleration of the center of mass of the lower disk
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