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Someone puts an upright 0.450 m radius wreath made out of 30 windings of a string of lights (wire with some resistance) on the roof of a 30.0 m long barn. The length of the barn is from north to south and the wreath faces west and is located midway between the north side and south side of the barn. Lightning strikes the south side of the barn. For one stroke of lightning assume the current went from 0 to30, 000A in70 mu s. What is the EMF induced in the wreath? If the wreath has a total resistance of 5.00 Ohm what current will be induced in the wreath and what direction will the current be in? What induced current would there be and in what direction if the lightning struck the north side of the barn? What is the induced current in the wreath from a N-S wire with a steady DC of 4.00 A2.00 m below the wreath (inside the barn).
How various g's of acceleration does the astronaut experience when the device is rotating at top speed? Each 9.80 m/s^2 of acceleration is 1 g.
A massive pulley in the shape of a solid disk is mounted on an axle with negligible friction. What is the mass of the pulley
A 770 kg car moving at 21 m/s brakes to a stop. The brakes contain about 15 kg of iron, which absorbs the energy. What is the increase in temperature of the brakes.
Assuming the sun to radiate like an idea thermal source at a tempterature of 6000 K, What fraction of the total solar radiation
What is the sound intensity level. One on an Incline--One Hanging A block of mass mA = 4.50 kg on a frictionless inclined plane of angle 30.0° is connected by a cord over a massless, frictionless pulley to the second block of mass mB = 2.80 kg ha..
Find the magnitude of the acceleration for an electron in a uniform electric field with a magnitude of 122 N/C.
Two tanks are engaged in a training exercise on level ground. The first tank fires a paint-filled training round with a muzzle speed of 240m/s at an angle 13.4, Find the distance between the tanks when the round was first fired
Using the data calculate the average speed of blood flow in the major arteries of the body which have a total cross-sectional area of about 2.0 cm2.
Monochromatic light of wavelength 500 nm is incident normally on a diffraction grating. how many TOTAL number of maxima can be seen
When the Sun is directly overhead, a hawk dives toward the ground with a constant velocity of 5.30 m/s at 68.5° below the horizontal
A 1.5 m^3-volume tank holds oxygen gas (M = 32 g/mole) at the pressure of 500,000 Pa. The temperature is 27 C. Find the mass of oxygen in the tank (in kg)
Sketch a free body diagram for the hot air balloon. When the burner is turned on what force is required to cause an upward acceleration of 5m/s squared?
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