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two parallel plates are separated by a distance of 25mm. the potential difference across the plates is 500v. an electron is accelerated from rest across the plates.what is the magnitude of the electric fiel between the plates? what is the change in kinetic energy of the electron in electron volts? with what speed will the electron strike the positive plate?
Two trains, each having a speed of 27 km/h, are headed at each other on the same straight track, What is the total distance the bird travels before the trains collide
A school yard teeter-totter with a total length of 5.2m and a mass of 36kg is pivoted at its center. A 19 kg child sits on one end of the teeter-totter.
Suppose the second distance d were traveled in the opposite direction; you forgot something and had to return home at the same constant speed as found in part (a). What is the average velocity for this trip.
What is the centripetal acceleration of a helicopter flying in a horizontal circle of a diameter 510 m at a speed of 120 m/s
A French submarine and a U.S. submarine move toward each other during maneuvers in motionless water in the North Atlantic, What are the speeds of the U.S. and the French subs
A freight train has a mass of 2 multiplied by 107-kg. If the locomotive can exert a constant pull of 12.50 multiplied by 105-N, how long would it take to enhancement the speed of the train from rest to 85.00 km/h.
What is an index of refraction of the liquid
Mars Rover When the Mars rover was deployed on the surface of Mars in July 1998, radio signals took about 14 {rm min} to travel from Earth to the rover. How far was Mars from Earth at that time.
A ship sets out to sail to the point 158 km due north. An unexpected storm blows the ship to a point 134 km due east of its starting point. (a) How far (in km) and (b) in what direction (as an angle from due east, where north of east is a positive an..
A sample of 10.0 mCi decays 1.2% in a single day. What is the activity after 30 days?
What is the pressure (in kPa) exerted by an object that has a base which is 2cm by 4cm nd a weight of 45N.
A 0.58 kg toy airplane is suspended from the ceiling by a 1.6 m long cord and rotates in a horizontal circle. If the cord makes an angle of 35 degrees with the vertical.
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