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A 120-V motor has mechanical power output of 3.00 hp. It is 80.0% efficient inconverting power that it takes in by electrical transmission intomechanical power.a) Find the current in the motor.b) Find the energy delivered to the motor by electricaltrans mission in 3.20 h of operation.c) If the electric company charges $0.160/kWh, what does it costto run the motor for 3.20 h?
Explain why? Because when you go to the grocery store they do not take any recognition as a form of payment!" do you agree or disagree? Examine.
What is the mass of the block on the left. At what rate is the plate's area increasing when the radius is 50 cm? (Give your answer correct to 2 decimal places.)
A player bounces a 0.47 kg soccer ball off her head, changing the velocity of the ball from i = (9.2 m/s) + (-2.7 m/s) to f = (6.1 m/s) + (5.5 m/s). The ball is in contact with the player's head for 6.70ms.
Unless otherwise stated, all objects are located near the Earth's surface, where = 9.8. Calculate the upward force on the puck in both situations
An electron with an initial speed of 4.90×105m/s is brought to rest by an electric field. What was the potential difference that stopped the electron
Approx. 8% of body weight lies above the 5th cervical vertebral body. If an individual's mass is 66kg, what is the stress at that point in your vertebral column
A spring has a spring constant = 40 N/m. It is compressed by a distance 10 cm. calculate Distance along the track to which the cart travels
Suppose a 5.0 meter diameter telescope were constructed on the dark side of the moon. The viewing there (except for brief periods of sunlight) would be excellent. As an example, what would be the separation between two objects that could just be r..
A wire, 24 m long, moves at 4.8 m/s perpendicularly through a 0.59 T magnetic field. What emf is induced in the wire
At the top of a 30m hill is a 5kg mass. It is loaded into a spring cannon. what was the gravitational potential energy of the mass with respect to the bottom of the hill
A golf ball of mass 0.045 kg is hit off the tee at a speed of 34m/s. Find the impulse imparted to the golf ball
I am confused as to whether or not this is a trick question Two metal strips are brought together until their edges are separated by a small distance, What changes would you expect to observe
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