How much kinetic energy does each electron have
In a dental X-ray machine a bean of electrons is accelerated by a potential difference of 10 kV. At the end of the acceleration, how much kinetic energy does each electron have if they start from rest?
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A large fake cookie sliding on a horizontal surface is attached to one end of a horizontal spring with spring constant k = 390 N/m; the other end of the spring is fixed in place. The cookie has a kinetic energy of 20.5 J as it passes through the
Describe the five kinds of secondary positive reinforcers and think of an example of how you believe they can be used in classrooms.
If the price of electrical energy is 0.0673 dollars per kilowatt-hour, what is the cost of using electrical energy to heat the water in a swimming pool (14.7 m x 11.7 m x 1.54 m) from 12.3 to 25.3 °C?
When should you use the agile method, and when should you use and engineering based method for developing a system? Support your answer. Make answer as brief as possible
Determine (a) the average speed between t = 2.00 s and t = 3.00 s, (b) the instantaneous speed at t = 2.00 s and at t = 3.00 s, (c) the average acceleration between t = 2.00 s and t = 3.00 s.
A 5.0 × 103 kg car accelerates from rest at the top of a driveway that is sloped at an angle of 16.0? with the horizontal. An average frictional force of 4.2×103 N impedes the car's motion so that the car's speed at the bottom of the d
An attorney is retained by one or more clients fro each case ,a client may have more than one attorney for each case ,,a client may have more than one case
A 28g rifle bullet traveling 220m/s buries itself in a 3.7kg pendulum hanging on a 2.8m long string, which makes the pendulum swing upward in an arc. Determine the vertical and horizontal components of the pendulum's displacement. I don't even kno
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