Physics, 02.10.2019 04:30, cjacobs77311
12. an electric motor is plugged into a standard wall socket and is run- ning at normal speed. suddenly, some dirt prevents the shaft of the mo- tor from turning quite so rapidly. what happens to the back emf of the motor, and what happens to the current that the motor draws from the wall socket? (a) the back emf increases, and the current drawn from the socket decreases. (b) the back emf increases, and the current drawn from the socket increases. (c) the back emf decreases, and the current drawn from the socket decreases. (d) the back emf decreases, and the current drawn from the socket increases.
Answers: 1
Physics, 22.06.2019 07:20, Nadi4753
Samir watches a 100-minute movie on his spaceship. maria's spaceshipe flies in the same direction as samir's spaceship but she observes his move to last 125 minutes and his spaceship to be 40 m long. how long does samir observe his own spaceship to be? according to an observer on earth, planet x is stationary. maria and samir depart earth on their spaceships at the same time, each flying at 0.5c. maria flies toward planet x and samir flies in the opposite direction. according to maria, her voyage to planet x takes 9 years. how many years does marias voyage take according to samir?
Answers: 3
Physics, 22.06.2019 13:40, youngbeauty17
Awind turbine is rotating counterclockwise at 0.5 rev/s and slows to a stop in 10 s. its blades are 20 m in length. (a) what is the angular acceleration of the turbine? (b) what is the centripetal acceleration of the tip of the blades at t=0s? (c) what is the magnitude and direction of the total linear acceleration of the tip of the blades at t=0s?
Answers: 1
Physics, 22.06.2019 18:00, kachinafenton9098
Asynthetic fiber used in manufacturing carpet has tensile strength that is normally distributed with mean 75.5 psi and standard deviation 3.5 psi. how is the standard deviation of the sample mean changed when the sample size is increased from n equals 8 to n equals 47
Answers: 2
Physics, 22.06.2019 20:00, luceridiaaz
What is the name of the perceived change in a sound wave’s frequency due to motion between the observer and the sound source?
Answers: 1
12. an electric motor is plugged into a standard wall socket and is run- ning at normal speed. sudde...
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Biology, 20.11.2019 12:31