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A dentist's drill starts from rest. After 3.53 s of constant angular acceleration it turns at a rate of 2.66E+4 revolutions per minute.
Find the drill's angular acceleration.
Determine the angle through which the drill rotates during this period.
A child pulls a 3.00-kg sled across level ground at constant velocity with a light rope that makes an angle 30.0 degrees above horizontal. what is the coefficient of friction between the sled and the ground
A 1kg ball released from horizontal attatched to a 2.5 m string collides ellastically with a 2 kg block at rest. what is the speed of the block after the collision.
A 1.80 m length of wire is held in an east-west direction and moves horizontally to the north with a speed of 14.9 m/s. Calculate the induced emf between the ends of the wire
In a PCM system, the number of quantization levels is 16 and the maximum lsignal frequency is 4 kHz, the bit transmission rate is
A 15-kg iron ball is dropped onto a pavement from a height of 80m. Suppose half of the heat generated goes into warming the ball. What is the temperature increase of the ball in degree C
Starting from rest, you move with a constant acceleration of 2.1 m/s2 for 15.0 s and then move with an acceleration of -2.1 m/s2 for another 15.0 s. How far do you go during the whole trip
Waves travel 5000 m/s along a wire that is 2m long. What is the wave length of the first harmonic? What is the frequency of the first harmonic
0.20 moles of Helium gas that initially occupies a volume of 4.0L under a total pressure of 1.0x10^5 Pa, What is the specific heat at constant temperature
A tennis ball initially moves with a velocity of 26.0 m/s horizontally to the right. A tennis racket strikes the ball, giving it a velocity of 26.0 m/s to the left. Find the initial velocity of the racket
When a guitar string is sounded along with a 440 Hz tuning fork, a beat frequency of 4 Hz is heard. compute the frequency of the string
If 100,000 MHz radar waves are incident on a plane coated with a polymer whose index of refraction is n = 1.50, how thick would you make the coating
You are using a standard microscope with a 0.10NA 4x objective and switch to a 0.65NA 40x objective. What are the acceptance angles for each
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