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A typical wall outlet voltage is 120 volts in the United States. Personal MP3 players require much smaller voltages, typically 487.0 mV. If the number of turns in the primary coil is 2464, calculate the number of turns on the secondary coil of the adapter transformer.
A man pulls a 333,000 kg jet down a runway using a rope. The rope is attached to nose of jet and goes down at a 17 degree angle. Calculate acceleration of jet and normal force on jet
What is the wavelength of sound if it has a wavespeed of 1.36 m/s and a frequency that is 6.69 Hz? (The unit of measure for the wavelength is a meter, which is written m.)
The electric potential at a position located a distance of 19.5 mm from a positive point charge of 8.10x10-9C and 10.3 mm from a second point charge is 1.30kV
A circus performer stretches a tightrope between two towers. He strikes one end of the rope and sends a wave along it toward the other tower. He notes that it takes the wave 0.795 s to reach the opposite tower, 20.0 m away. If a 1 meter length of ..
A 0.70 kg ball is moving horizontally with a speed of 9.7 m/s when it strikes a vertical wall. What is the magnitude of the change in linear momentum of the ball
An electron in the beam of a typical television picture tube is accelerated through a potential difference of 20,000 V before it strikes the face of the tube, what is the eneregy of the electron in joules
Sweating is one of the main mechanisms with which the body dissipates heat. Sweat evaporates with a latent heat of 2430 kJ/kg at body temperature, what would be the maximum sustainable metabolic rate, in watts, if75% of the energy used by the body ..
A wire is formed into a circle having a diameter of10.7cm and is placed in a uniform magnetic field of3.16mT. Find the maximum torque on the wire
A rope with 270g of mass per meter is under 600N tension. A wave with frequency 4.0Hz and amplitude 6.1cm is propagating on the rope. What is the average power carried by the wave?
An 80 kg spacewalking astronaut pushes off a 640 kg satellite, exerting the 100N force for the 0.50 s it takes him to straighten his arms.
Two balls attached to strings have the same mass and volume, but are made of different materials. Which ball excerts a geater net force on the block
A visual inspection of an insect with mass 0.4mg (milligrams) suggest that its uncertainty in postion is 0.5um, How fast could the insect be moving
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