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a fully charged 12.0 volt car battery rated at 850 amp hours is connected to a spotlight rated at 150 watts for 12 volts.
A. give 850 amp hours in si units
B. what current soed the spot operate on?
C. howlong in hours will the battery last while powering the spotlight?
A 100kg crate is being pushed across a horizontal floor by a force P that makes an angle of 30 below the horizontal. The coefficient of kinetic friction is 0.20. What must be the magnitude of P, so that the net work completed by it and the kinetic..
A plane flies from base camp to Lake A, 280 km away in the direction 20° north of east. After dropping off supplies it flies to Lake B that is 190 km at 30° west of north from Lake A. Graphically find out the distance and direction from Lake B to ..
What is the wavelength of the waves produced on the wire.
A converging lens (f = 24.6 cm) is used to project an image of an object onto a screen. Find the two object distances
Two blocks are connected by a string. The smooth inclined surface makes an angle of 35 degrees with the horizontal, and the block on the incline has a mass of 5.7 kg . The mass of the hanging block is = 2.9 kg.
A laser emits a narrow, circular beam of light. The radius of the beam is 1.37×10-3 m, and the power is 1.44×10-3 W
A star with a surface temperature of 19,000 K and a radius of 3.7 X 106 km is located at a distance of 520 pc from the Earth. What is the luminosity of this star
A 38.0 kg box initially at rest is pushed 4.00 m along a rough, horizontal floor with a constant applied horizontal force of 125 N. determine the final speed of the box
There are two major types of aberration (defective image formation) in lenses: spherical and chromatic. Spherical aberration comes from fact that a spherical lens has the property of focusing parallel rays to a single point only approximately.
Starting from rest, an elevator has a constant acceleration of 0.621 m/s2 for a period of 6.25 sec., find the displacement of the elevator
The largest apple pie ever made was rectangular in shape and had an area of 7m× 12m. Consider a parallel-plate capacitor with this area. Imagine that the capacitor is filled with air and the distance between the plates is 1mm. a.
Blue whales apparently communicate with each other using sound of frequency 17.0, What is the wavelength of such a sound in seawater
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