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Assume you held a ball at a height h above the ground and then dropped it.
a. Describe the expression for the total energy of ball at a height h just before you drop it?
b. Find the expression for the total energy of the ball just before the ball hits the ground (height = 0, velocity = vf)?
c. Use the Conservation of Mechanical Energy and the expressions found in (a) and (b) to write a single energy equation for the ball as it falls from a height of h to a height of 0.
d. Solve the expression in (c) for the final velocity vf. Describe it in terms of the variables m, g and h.
In a mass spectrometer, a singly, negative charged ion having a particular velocity selected by using a magnetic field of .10 T perpendicular to an electric field of 1000 V/m. What is the mass of the ion
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A 225 kg projectile, fired with a speed of 109 m/s at a 66.0 angle, breaks into three pieces of equal mass at the highest point of its arc (where its velocity is horizontal). Determine the energy released in the explosion
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piano tuners tune pianos by listening to the beats between the harmonics of two different strings. when properly tuned
A 2700 pF air-gap capacitor is connected to a 7.5 V battery. If a piece of mica is placed between the plates, how much charge will flow from the battery
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