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Compute the cost per day of operating a lamp that draws a current of 2.20 A from a 110 V line. Assume the cost of energy from the power company is $0.0580 / kWh. NOTE: Enter your response with tenths precision.
Radioactive isotopes frequently occur together in mixtures. Assume a 400g sample contains, with a half-life of 12 days, and, with a half-life of 4.5 days. If there are firstly twice as many calcium atoms as there are barium atoms, what will be the ra..
The armature of a simple ac generator has 30 circular loops of wire, each with a radius of 10 cm. What is the maximum emf induced in the loops
q1. a 346- uniform 1.04- bar is suspended horizontally by two vertical cables at each end. cable a can support a
A 4.7-g bullet leaves the muzzle of a rifle with a speed of 334 m/s. What force (assumed constant) is exerted on the bullet
A block of mass m = 4 kg slides back and forth on a frictionless horizontal track. It is attached to a spring with a relaxed length of L = 4 m, By what length is the spring extended
a steel wire of length 1.6 m and diameter 1.10 mm is joined to an aluminum wire of identical dimensions to make a
a person who weighs 641 n is riding a 94.0 n mountain bike. suppose the entire weight of the rider and bike is
The Earth has a radius of 6.38 × 10^6 m and is 1.49 × 10^11 meters from the Sun. If the intensity of solar electromagnetic radiation at the top of the Earth's atmosphere is 1330 W/m^2, what is the total radiated power output of the Sun?
you have encouraged your little sister, who has just gotten glasses for her severe near-sightedness, to give you those glasses so you can play with them. If your sister's face is 180. mm-tall, how tall will it appear to be in the image (in mm)
Imagine that we define the rear end of a train 120 m long to long to define the origin X'=0 in the train frame and we define a certain track signal light to define the origin X=0 in the track frame. Where does this event occur in the train frame
If it takes 9.19e5 J of heat to bring 0.30 kg of ice at -17*C to water vapor at 108*C, what is the specific heat of the water vapor
When red light in a vacuum is incident at the Brewster angle on a certain type of glass, the angle of refraction is 31.0°. What is the Brewster angle
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