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A 90.0- and a 60.0- resistor are connected in parallel. Whenthis combination is connected across a battery, the currentdelivered by the battery is 0.152 A. When the 60.0- resistor is disconnected, the currentfrom the battery drops to 0.0642 A. Determine (a)the emf and (b) the internal resistance of the battery.
A gold prospector finds a solid rock that is composed solely of quartz and gold. Find the mass of the gold in the rock
The largest fusion bomb ever detonated (called the Tsar Bomba) was tested by the Soviet Union in 1961. How many kilograms of matter were converted to energy
The nucleus of an atom consists of protons and neutrons (no electrons). A nucleus of a carbon-12 isotope contains six protons and six neutrons, while a nitrogen-14 nucleus comprises seven protons and seven neutrons.
An airplane starting from airport A flies 304 km east, then 364 km at 35.5° west of north, and then 150 km north to arrive at last at airport B.
q1. a rock is projected from the edge of the top of a building with an initial velocity of 14 ms at an angle of 36
A 10g ball of clay is thrown horizontally at 30m/s toward a 1.5kg block sitting at rest on a frictionless hi surface. The clayts and sticks to the block. What impulse does the clay exert on the block
A train is moving parallel and adjacent to a highway with a constant speed of 23 m/s. Initially a car is 57 m behind the train, What is the speed of the car just as it passes the train
In the figure below, a frictionless roller coaster car of mass m tops the first hill with speed v0 at height h. What is the speed of the car at (a) point A, (b) point B, and (c) point C? (d) How high will the car go on the last hill, which is too hig..
The mass of a newborn baby's brain has been found to increase by about 1.6 mg per minute. How much does the brain's mass increase in one day? How long does it take for the brain's mass to increase by 0.0045 kg ?
The Mariana trench is located in the Pacific Ocean at a depth of about 11 000 m below the surface of the water. For comparison, determine the weight of a jetliner whose mass is 6.04 × 105 kg
nbspa proposed solar collector installation has a frontal area exposed to the sun of 50.0 m2 and combines a
An emf source with emf = 120 V, a resistor with R = 84.0 ?, and a capacitor with C = 3.50 µF are connected in series. find the magnitude of the charge on each plate of the capacitor
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