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A transformer has 720 turns in the primary coil and 40 turns in the secondary coil.
a) If an AC voltage of 120 V is across the primary coil, what will be the voltage on the secondary coil?
b) If the initial AC current is 5.90 A, what is the output current?
You pull your little sister across a flat snowy field on a sled. Your sister plus the sled have a mass of 31 kg. The rope is at an angle of 30 degrees to the ground. As you pull with a force of 30 N, the sled travels a distance of 45 m.
The temperature difference between the inside and the outside of a home on a cold winter day is 49°F. Express this difference on the Kelvin scale.
A positively charged particle of mass 7.60 10-8 kg is traveling due east with a speed of 40 m/s and enters a 0.39-T uniform magnetic field. compute the magnitude of the magnetic force acting on the particle
question the intensity 18m from a source of sound is measured to be 10-4wm2.a determine the intensity of the sound in
Two conductors insulated from each other are charged by transferring electrons from one conductor to the other. After 9.057 × 1013 have been transferred, the potential difference between the conductors is 16.8 V. The charge on an electron is −1.60218..
Consider the Earth and a cloud layer 800 m above the planet to be the plates of a parallel-plate capacitor. what is the maximum charge the cloud can hold
Assume you wish to send a 200 bytes long message from your equipment to a friend's machine via four intermediate nodes. You are needed to use a header size of 5 bytes per packet.
Two wheels have the same mass and radius of 4.5 kg and 0.39 m, respectively. determine the net external torque that acts on each wheel
A golf ball of mass 0.045 kg is hit off the tee at a speed of 33m/s. Find the average force exerted on the ball by the golf club
when it falls back it hits the ground with speed v1=50m/s. The mass of the ball is m=20g. Illustrate what is the total work done by the drag force while the ball is in the air?
A rectangular block of ice 9.00 m on each side and 0.7 m thick floats in sea water. The density of the sea water is 1025kg/m3. The density of ice is 919kg/m3. How high does the top of the ice block float above the water level.
A sprinter explodes out of the starting block with an acceleration of 4m/s^2, which she sustains for 3 seconds. What is the length of the race
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