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A light bulb is wired in series with a 134-Ω resistor, and they are connected across a120-V source. The power delivered to the light bulb is 22.3 W. What are the two possible resistances of the light bulb
A jet engine emits sound uniformly in all directions, radiating an acoustic power of 3.23 × 102 kW. If the intensity of the sound at a distance of 40.3 m from the engine is 15.8 W/m^2 calculate the corresponding sound intensity level in dB
Biomedical measurements show that the arms and hands together typically make up 13.0 of a person's mass, while the legs and feet together account for 37.0. find the average angular velocity of his arms and legs
A roller coaster having a total mass (including passengers) of 500 kg travels freely along a winding, frictionless track. Point A, E, and G are horizontal straight sections, what is the height of that point above the ground
A particle with charge +3 nC is located at position A. Another particle with charge -4 nC is located at position B. What is the magnitude of the electric field at location B
A jewelry maker has asked your glass studio to produce a sheet of dichroic glass that will appear red for transmitted light, how thick should the coating be
A car initially traveling at 27.9 m/s undergoes a constant negative acceleration of magnitude 1.70 m/s2 after its brakes are applied. What is the angular speed of the wheels when the car has traveled half the total distance
A pair of in-phase stereo speakers is placed side by side, 2m apart. You stand directly in front of one of the speakers, 5m from the speaker. What do you hear.
A proton is accelerated from rest through a potential difference of 9.0V. Find the energy of the particle and the speed of the particle Through what potential difference would an electron need to accelerate to achieve a velocity of 1.00 x 10 7m/s?
A 71.0kg football player is gliding across very smooth ice at 2.00m/s, What is the player's speed afterward if the ball is thrown at 18.0m/s relative to the ground
An 85 kg jogger is heading due east at a speed of 1.6 m/s. A 55 kg jogger is heading 34° north of east at a speed of 3.6 m/s. compute the direction of the sum of momenta of two joggers
A 1.0- kg mass is attached to a string wrapped around a shaft of negligible mass and having a 7.0- cm radius. How far apart are the masses of the dumbbell
An electromagnetic flowmeter applies a magnetic field of 0.23 T to blood flowing through a coronary artery at a speed of 13 cm/s. What force is felt by a chlorine ion
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