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A vinyl record (disk) starts from rest and then rotates about its central axis reaching playing speed of 33 1/3 rmp in 2.5 seconds. The record has a diameter of 32 cm and a mass of 0.40kg. in the interval from t=0 to t=2.5 seconds calculate
a. the final angular velocity in radians/sec.
b. the average linear speed of a point on the outside edge of the disk.
c. the total angular displaement.
d. the amount of torque required.
e. calculate the final angular velocity of the two records when another record, (disk with a diameter of 24cm and a mass of 0.20kg) drops down on top of the original.
Over the course of a multi-stage 4080-km bicycle race, the front wheel of an athlete's bicycle makes 2.00 106 revolutions. How many revolutions would the wheel have made during the race
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List all the possible set of quantum numbers for a hydrogen atom with n=3. What is the electrons total energy
The microwave radiation left over from the Big Bang explosion of the universe has an average energy density of 3.88 Ã- 10â€"14 J/m3
A standard deck of cards contains 52 different cards. A poker hand consists of five cards, chose randomly. How many different poker hands are there
Find out the work completed by neoconservative forces in stopping plane. At the nozzle exit, diameter is 2.5 cm and the density is 1.29kg/m^3. What is the speed of the air as it leaves the nozzle.
What average thermal power is produced as rock stops?
A 0.015 kg bullet traveling horizontally at 400.2 m/s strikes a 4.1 kg block of wood sitting at the edge of a table. The bullet is lodged into the wood. If the table height is 1.2 m, how far from the table does the block hit the floor.
Calculate the torque required to accelerate the Earth in3days from rest to its present angular speed about its axis. Calculate the average power required
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