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A 690-W space heater is designed for operation in Germany, wherehousehold electric outlets supply 230 V (rms) service. What is thepower output of the heater when plugged into a 120-V (rms) outletin a house in the United States? Ignore the effects of temperatureon the heater's resistance.
A circular coil made up of 10 windings of wire has a circumfrence of 2 m. The coil is perpendicular to a magnetic field of strength 10 T. what is the change in magnetic flux through the coil
A parallel-plate capacitor in air has a plate separation of 1.50 cmand a plate area of 25.0cm2. The plates arecharged to a potential difference of 2.50x102 V and disconnected from the source. The capacitor is then immersedin distilled water.
A ball of mass 1.7 kg hangs at the end of a string 1.2 m in length from the ceiling of a room. The height of the room is 4.0 m. What is the gravitational potential energy of the ball relative to the ceiling
An object has a kinetic energy of 303 J and the momentum of magnitude 22.9 kg·m/s. Find the speed and the mass of the object.
Two spherical objects with a mass of 5.26 kg each are placed at a distance of 3.95 m apart. How many electrons need to leave each object
Two forces are applied to a car in an effort to move it, as shown in the following figure, where F1 = 410 N and F2 = 376 N. (Assume up and to the right as positive directions.), What is the resultant of these two forces
A 1200.0 kg car is initially traveling at 20.0 m/s. It swerves to avoid running into a baby deer, only to run into a parked truck (1860.0 kg). Find the velocity of the 2 vehicles after they collide
A model rocket is fired vertically from rest. It has a net acceleration of 15.0 m/s2. After 1.1 s, its fuel is exhausted and its only acceleration is that due to gravity. how high does the rocket travel
You set up an experiment with two polarizer screens on an optical bench, What is the ambient light in the room as you took your data
A flashlight contains two batteries in series each having a potential difference of 1.5V and an internal resistance of 0.2 ohms, How much power does the bulb dissipate
A piece of copper wire has a resistance per unit length of 5.95 10-3 ?/m. Find the magnetic field strength at the center of the coil
Luigi wishes to suspend a lantern of mass m between his store and a telephone pole. THe cable attached to his store makes an angle (theta) to the wall. The cable to the telephone pole is horizontal.
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