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A wheel is spinning at 10 rad/s. It undergoes an angular acceleration of 8rad/s2 until it reaches an angular velocity of 354 rad/s.
A. Decide how long it took to spin up.
B. Determine how many revolutions it made while spinning up.
An electric fan is running on HIGH. After fan has been running of 13.2 minutes, the LOW button is pushed. The fan slows down to 98 rad/sec in 1.83 seconds. What was the initial angular speed of the fan
The muon's rest mass is 105.7 MeV/c2, and its life-time is 2.2 x 10-6 s. Think a beam of muons with a kinetic energy of 800 MeV. What is its life-time in the beam observed in the laboratory frame? What is the speed of the muons in the beam?
Two objects with masses of 2.60 kg and 6.50 kg are connected by a light string that passes over a frictionless pulley. Determine the tension in the string in Newtons
A beam of protons moves in a circle of radius 0.34 m. The protons move perpendicular to a 0.29-T magnetic field. (a) What is the speed of each proton? (b) Determine the magnitude of the centripetal force that acts on each proton
The cable supporting a 1950 kg elevator has a maximum strength of21920 N. What maximum upwardacceleration can it give the elevator without breaking
A stopwatch is utilized to measure how long it takes a sprinter to run 100 meters. This stopwatch measures time intervals to hundredths of seconds. Using the stopwatch the timekeeper measures the sprinter’s time as9.88 seconds.
At a crime scene, the forensic inestigator notes that 7.5-g leadbullet that was stopped in a door-frame apparently meltedcompletely on impact. Assuming the bullet was fired at roomtemperature of 20°C, what does the investigator calculate theminimum m..
A 0.70kg piece of lead at a temperature of 160C is dumped into 800mL of water at a temperature of 22C , How much heat flowed in this process
A coil having L=0.14 H ,R=12? is connected across a v=110v, f=25Hz line. Compute a power factor and power
during liftoff a hot-air balloon accelerates upward at a rate of 3.3 . the balloonist drops an object over the side of
A wheel starts at rest and takes 3.00 s to rotate 37.0 revolutions at which points its angular velocity is 98.0 rad/sec. What is the constant angular acceleration of the wheel
A damping force acts on the egg, and the amplitude of the motion decreases to 0.101 in a time of 5.00 compute the magnitude of the damping constant b.
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