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An air conditioner draws 12 A at 220 V ac. The connecting cord is copper wire with a diameter of 1.450 mm.
a. how much power does this air conditioner draw?
b. If the total length of wire is 18 m, how much power is dissipated in the wiring?
A straight rod consists of a 1.2-cm-long piece of aluminum attached to a 2.0-cm-long piece of steel. By how much will the length of this rod change
The driver of a 1485 kg car is driving along a street at 25.0 mph. Another driver, coming from directly behind, with what combined speed do they begin to skid
A plank 2.00 cm thick and 13.0 cm wide is firmly attached to the railing of a ship by clamps so that the rest of the board extends 2.00 m horizontally over the sea below, find the shear modulus of the wood
A 1200 kg car rounds a corner of radius r = 45m. If the coefficient of static friction between the tires, what is the greatest speed the car can have in the corner without skidding
An astronaut (Speedo) travels to a distant planet and back with speed 0.7c. He is 30 yrs old when he departs and 50 years old when he returns. how old is Goslo when Speedo returns
A spring stretches by 0.0241 m when a 4.15-kg object is suspended from its end. How much mass should be attached to this spring so that its frequency of vibration is f = 4.44 Hz
A bird flies 3.6km due west and then flies 1.2km due north, What is the angle between the net displacement vectors of the 2 birds
Suppose you are planning a trip in which a spacecraft is to travel at a constant velocity for exactly eight months, as measured by a clock on board the spacecraft, and then return home at the same speed.
A block slides down a frictionless plane having an inclination of17.0°. If the block starts from rest at the top and the length of thisincline is 1.53 m, find the acceleration of the block.
q1. an airplane is flying with a velocity of 92.0 ms at an angle of 23.0circ above the horizontal. when the plane is a
you place a small lightbulb 70 cm from a concave mirror and find a real image 17 cm from the mirror. where should you
Many stores have "security mirrors" mounted on ceilings or in corners so that employees can keep watch over large parts of the store, what is the magnification of the image
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