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A step-down transformer converts 120V AC to 6.00V AC (rms values), and the secondary winding is connected to a purely resistive circuit having an equivalent resistance of 3.00W..
a. If the primary coil has 100turns, how many turns are in the secondary?
b. How much power is delivered?
A space traveler moving at a speed of 0.56c with respect to the earth makes a trip to a distant star that is stationary relative to the earth. He measures the length of this trip to be 7.5 light-years. What would be the length of this same trip (in l..
two strings with linear densities of g/m are stretched over pulleys, and attached to hanging blocks (string 1 is 20 kg=mass of block)-50 cm away. what is the unkown mass
An iron heating coil for a burner on an electric range runs off a 240V circuit and produces 100 Watts of heat. Given a length of 1.2 m for the coil, find the diameter of the coil
If the gauge pressure of the blood at your heart is 13.25 kPa and your body doesn't compensate, what would the pressure be at your head, 57.4 cm above your heart
A rope applies a horizontal force of 193 N to pull a crate a distance of 1.89 m across the floor. What is the work done by the frictional force
Two tuning forks have frequencies of 272 Hz and 294 Hz. What is the beat frequency if both tuning forks are sounded simultaneously
A hot-air balloon is ascending at the rate of 14 m/s and is 57 m above the ground when a package is dropped over the side. How long does the package take to reach the ground
Light of wavelength 0.533 µm (in air) enters the water in a swimming pool. What is the wavelength of the light in water
A copper rod has a length of 1.7 m and a cross-sectional area of4.1 x10-4 m2. One end of the rod is incontact with boiling water and the other with a mixture of ice andwater. What is the mass of ice per second that melts? Assume that no heat is lo..
question1an unmarked police car travelling a constant 93 is passed by a speeder. accurately 1.20 s after the speeder
A 0.449 kg ice puck, moving east with a speed of 2.91 m/s, has the head-on collision with a 0.846 kg puck initially at rest. Assume a perfectly elastic collision, what will be the speed and direction of each object after the collision.
A pipe with a 2m diameter carries water having a velocity of 4 m/s. What is the mass flow rate of the water in kg/s at the following temperatures.
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