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An electric fan is turned off, and its angular velocity decreases uniformly from 400 rev/min to 220 rev/min in 5.00 s. A) Find the angular acceleration in rev/s^2. B) Find the number of revolutions made by the motor in the 5.00 s interval. C) How many more seconds are required for the fan to come to rest if the angular acceleration remains constant at the value calculated in part A?
Suppose an RLC circuit must be created by choosing an inductor and capacitor to place in series with a 1200 ohm resistor. To tune in the AM band frequencies, calculate an appropriate value for the inductance and determine the max and min capacitance..
a piece of pure gold (density= 19.3g/cm^3) is suspected of having a hollow center. What is volume of the hollow center
A 50 turn square coil of length 6.00 cm and width 5.00 cm, is rotated at 20.0 rad/s in a 3.00 T magnetic field. What is the voltage amplitude
A 7.80-g bullet moving at 610 m/s penetrates a tree trunk to a depth of 5.80 cm, Use work and energy considerations to find the average frictional force that stops the bullet
Two joggers run at a constant velocity of 7.5 m/s toward the east. At time t=0, one is 15m east of the origin and te other is 15m west.
A block is moved down an incline a distance of 5.0m from point A to point B by a force F that is parallel to the incline and has a a magnitude of 2.0 N
What is the velocity of a beam of electrons that go undeflected when passing through perpendicular electric and magnetic fields of magnitude 8.8x103 V/m and 3.5x10-3 T respectively
A block of iron is suspended from one end of an equal-arm balance by a thin wire. To balance the scales, 6.15 kg are needed on the scale pan at the other end. What is the volume of the block (in m3)
a pendulum with a pendulum length of 1.25 m undergoing SHM of mass 250g just released from an angel of 7 to the vertical. determine the period and frequency of the motion
A pion is an unstable particle that has an average lifetime of 2.55 × 10^-8 s. How far does it travel in its lifetime, relative to Earth
A spring with k=620 N/M is stretched with a tension of 40 N. What is the potential energy of the stretched spring
A 40 kg child slides down a playground slide at a constant speed. The slide has a height of 3.6 m and is 7.6 m long. find the magnitude of the kinetic friction force acting on the child
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