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An electron moves at a speed of 60.0 m/s directly toward a stationary electron when the two electrons are 1.00 m apart. How close to the stationary electron is the moving electron when it turns around?
A swimmer swims across the river and reaches the opposite shore directly across from where he started. How long does it take the swimmer to reach the opposite shore
A 74.6-kg bungee jumper jumps from a bridge. She is tied to a bungee cord whose unstretched length is 11.8 m, and falls a total of 34.0 m. Calculate the maximum acceleration experienced by the jumper
The membrane that surrounds a certain type of living cell has a surface area of 6.1 x 10-9 m2 and a thickness of 1.3 x 10-8 m. how many such ions are present on the outer surface?
A liquid is used to make a mercury-type barometer, as described in section Pressure in a Fluid. The barometer is intended for spacefaring astronauts. Find the atmospheric pressure at the surface of Planet X
A block of mass m is initially at rest on a frictionless surface. At time t = 0, an increasing force given by F = kt2 is applied to the block. Find the velocity and the displacement of the block as a function of time and graph x and v versus t.
A positively charged particle of mass 7.27E-8 kg is traveling due east with a speed of 87.0 m/s and enters a 0.250 T uniform magnetic field. The particle moves through one-quarter of a circle in a time of 2.04E-3 s, at which time it leaves the field ..
Near the surface of the Earth, a beanbag is thrown at an angle ? = 45? from the top of a building a height h above the ground, what was the initial speed of the beanbag
A coil is connected in series with a 10.0k? resistor. A 50.0 V battery is applied across the two devices, How much energy is stored in the coil at the same moment
A refrigerator has a coefficient of performance of 7.9. How much heat in joules is exhausted to the hot reservoir when 209 J are removed from the cold reservoir?
an electric on a airplane operates 20.8 volts a draws a current of 14.7amps. How much energy in joules does the motor use
A 900- kg car collides with a 1300- kg car that was initially at rest at the origin of an x-y coordinate system. What was the initial speed of the lighter car
You plan to project an inverted image 30.0 cm to the right of an object. You have a diverging lens with focal length -4.00 cm located 5.40 cm to the right of the object. What is the focal length of the second lens
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