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A cord passes over a weightless and frictionless pulley. Masses of 200 and 300 grams are attached to the ends of the cord. Obtain the distance the masses will move during the fifth second after they had started.
A 6 μF and a 10 μF capacitor are connected in parallel across a 40 V DC battery. The capacitors are then allowed to fully charge. Decide the total capacitance of the circuit. What is the voltage across the 6 μF capacitor? How much charge is stored on..
A small current loop of area A=0.0008m2 and moment of inertia I=6.9e-07kgm2 carries a current i=0.0039A with its magnetic moment perpendicular to the Earth's magnetic field. The magnitude of the Earth's field is B=4.2e-05T.
questiona high-speed flywheel in a motor is spinning at 450 rpm when a power failure rapidly occurs. a flywheel has
What is the cannonball's velocity at the highest point in the trajectory, How long does it take to get to this point
An advertisement claims that a centrifuge takes up only 0.127m of bench space but can produce a radial acceleration of 3000g (g= 9.8m/s^2) at 5000 rev/min
An ultralight plane and pilot have a total mass of 156 kg. what is the net force acting on the plane and pilot
an electron experiences a magnetic force with a magnitude of 4.60times10?15 when moving at an angle of 60.0 with
A ruby laser emits an intense pulse of light that lasts a mere 30 ns. The light has a wavelength of 690 nm, and each pulse has an energy of 200 mJ. (A) How many photons are emitted in each pulse? (B) What is the rate of photon emission, in photons pe..
A flight attendant pulls her 63N flight bag a distance of 312m along a level airport floor at a constant velocity. The force she exerts is 39N at the angle of 59° above the horizontal.
1 . a wooden box item sits on a horizontal wooden board. the coefficient of static friction between the box and the
A boy whirls a stone in a horizontal circle of radius 1.7 m and at height 2.2 m above ground level. The string breaks, and the stone flies horizontally and strikes the ground after traveling a horizontal distance of 10 m. What is the magnitude of the..
two equal resistances are connected in the gaps of a meter bridge. if the resistance in the left gap is increased by 10
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