A cooling fan is turned off when it is running at 920 rev/min. It turns 700 revolutions before it comes to a stop.
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- Our refrigerated microcentrifuge has a rotor that has a 5.6 cm radius. If a protocol asks for a RCF of 200g, what rpm should we set on the microcentrifuge?Convert 46.0° to radians, 14.0 rad to revolutions, and 73.0 rpm to rad/s. HINT (a) 46.0° to radians rad (b) 14.0 rad to revolutions rev (c) 73.0 rpm to rad/s rad/sA ceiling fan with 89-cmcm-diameter blades is turning at 70 rpmrpm . Suppose the fan coasts to a stop 30 ss after being turned off. Through how many revolutions does the fan turn while stopping?
- The engine in a small airplane is specified to have a torque of 500 N⋅m. This engine drives a 2-m long, 40 kg single-blade propeller. On startup, how long does it take the propeller to reach 2000 rpm?A wheel of radius 75cm is rotating with a frequency of 3.0Hz about a fixed axis of rotation. What is the speed of a piece of chewing gum stuck to the rim?A disk spins at 4.0 revolutions/second. What is its period, in second? Your answer needs to have 2 significant figures, including the negative sign in your answer if needed. Do not include the positive sign if the answer is positive. No unit is needed in your answer, it is already given in the question statement.
- A car sits at rest at the starting line of a circular racetrack. It begins to accelerate at a constant rate (that 15, a constant angular acceleration) as it makes Its way halfway around the track. It then decelerates at the same constant rate during the second halt of the lap. It completes the entire lap in a time of 28.5 seconds. Also, the radius of the racetrack is 42.0 m. What is the car's top speed?A) 25.6 m/SB) 44.1 m/SC) 18.5 m/sD) 35.1 m/sAn angular velocity of 10 rad/s is how many revolutions per minute (RPM)? Which is the answer ? 0.535 RPM 6.28 RMP 27.2 RMP 377 RMP 95.5 RMPWhen a fan is turned off, its angular speed decreases from 168 rpm to 64.0 rpm in 6.08 s. A) what is the angukar acceleration of the fan? B) How fast the edges of the blades are moving (in m/s) at time 6.08 s, if they are 86.0 cm long?