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A battery's ideal voltage is 12.0 V; its internal resistance is 1.46 ohms. If the battery is attached in series to a 21.5-ohms resistor, what is the actual voltage supplied by the battery?
A light, flexible cable is wrapped around a solid cylinder with mass 3.5 kg and radius 0.8 meters.
An 854 kg (1887 lb) dragster, starting from rest, attains a speed of 27.1 m/s (60.7 mph) in 0.59 s.
What is the gauge pressure of the air in the tires when its temperature rises to 27 .00C and its volume increases to 1.67 x 10-2 m3? Assume atmospheric pressure is 1.01 x 105 Pa.
A car is driven 175km west and then 55km southwest. What is the displacement of the car from the point of origin (magnitude and direction).
Suppose a 76 kg person hangs vertically from a nylon rope. What radius must the rope have if its fractional increase in length is to be the similar as that of the spider's thread.
A vertical scale on a spring balance reads from 0 to 175. The scale has a length of 12 from the 0 to 175 reading. A fish hanging from the bottom of the spring oscillates vertically at a frequency of 2.8.
Three point charges have equal magnitudes, two being positive and one negative. These charges are fixed to the corners of an equilateral triangle, as the drawing shows. The magnitude of each of the charges is 7.1 µC, and the lengths of the sides o..
Compute the x-coordinate of the center of mass XCM. Suppose that the mass of the rod is small enough to be ignored in your calculation. Your answers must be accurate to within 0.1 cm.
draw a motion diagram, using the particle model, showing the cars velocity vectors as seen from a helicopter hovering over the highway.
A steel wire of mass 0.400kg and length 0.640m supports a 102 kg block. The wire is struck exactly at its midpoint causing a small displacement. How long does it take the peak of this displacement to reach the top of the wire.
Suppose that the speed of the water in the reservoir is zero, and that the water flow is steady. Overlook both air resistance and the height difference between the reservoir and the muzzle.
How many 104 W lightbulbs can you use in a 102 V circuit without tripping a 17 A circuit breaker? (The bulbs are connected in parallel that means that the potential difference across each lightbulb is 102 V.)
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