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Q1. If a power source provides 54 watts of power to operate a machine that draws 4.5 amps of current when in use, what is the voltage used by the machine?
Q2. A nightlight uses 3.5 watts of power when plugged into an outlet. The current in the nightlight's circuit is 0.034 amps. What is the voltage in the nightlight?
Q3. If a generator provides 33600 watts of power to a motor and the voltage across the motor is 440 volts, what is the current in the motor?
Q4. A mixer uses 200 W of power. If the mixer is plugged into a 120 volt outlet, what current is in the mixer's circuit?
Q5. A coil on an electric stove draws 1250 W of power while using 240 volts. What is the current in the coil?
A Ball begins rolling at the left and has just suffient energy to climb up to point C, which is the top of the hill on the right
A 80 kg man in a 7.0 kg chair tilts back so that all the weight is balanced on two legs of the chair. Assume that each leg makes contact with the floor over a circular area with a radius of 1.0 cm,
question1car a is moving with a constant speed of 10ms and passes car b which is at rest. ten second later the latter
A soccer ball of diameter 30 cm rolls without slipping at a linear speed of 2.7 m/s. Through how various revolutions has the soccer ball turned as it moves a linear distance of 16 m.
Two dogs pull horizontally on ropes attached to a post; the angle between the ropes in 69.0 degrees, Find the angle the resultant force makes with the rope of dog A
A laser beam with wavelength Lambda= 6328 Å is incident normal to the plane of a diffraction grating. find the distance between the two first- order maxima in the pattern
A state highway patrol car radar unit uses a frequency of 9 x 10^9. what frequency difference will the unit detect from a car receding at a speed of 46.5 m/s from stationary patrol car.
A hand grenade is thrown with a speed of v0 30 m/s, and a 60 degree angle with x-axis, just prior to exploding. It breaks into two pieces of equal mass after the explosion. One piece has a final velocity of 40 m/s along x. Find the velocity of t..
A 63.5kg astronaut is doing a repair in space on the orbiting space station. She throws a 2.35kg tool away from her at 3.60m/s relative to the space station. With what speed will she begin to move\\
question1a car is stopped at a traffic light. it next travels along a straight road so that itsnbspdistance from the
A photon of red light (wavelength = 710 nm) and a Ping-Pong ball (mass = 2.10 × 10-3 kg) have the same momentum. At what speed is the ball moving
A target glider, whose mass m2 is 320 g, is at rest on an air track, a distance d = 53 cm from the end of the track. A projectile glider, How much more time elapses before the gliders collide again
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