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One recent study has shown that x rays with a wavelength of 0.0050 can produce significant numbers of mutations in human cells. Calculate the energy in of a photon of radiation with this wavelength.
A camera has a lens w/ a 52 mm focal length and a sensor array that measures 4.82mm x 3.64 mm, If you want the giraffe to fit the longer dimension of sensory array how far away from the animal will you have to stand
A hydraulic jack is made with a small piston 1.3 cm in diameter that is used to move a large piston 5.2 cm in diameter. how heavy a load can he lift with the jack
A roller coaster reaches the top of the steepest hill with a speed of 6.0 km/h. Estimate its speed when it reaches the bottom
A bat at rest sends out ultrasonic sound waves at 50,000 Hz and receives them returned from an object moving directly away from it at 33.0 m/s. What is the received sound frequency
The electromagnetic wave that delivers a cellular phone call to a car has a magnetic field with an rms value of 1.60 10-10 T. How much energy does this wave carry through the window
Passengers in an auto traveling at 16.5 m/s toward the east hear a siren frequency of 863 Hz from an emergency vehicle approaching them from behind at a speed of 40.1 m/s
A research-level Van de Graaff generator has a 1.9-m-diameter metal sphere with a charge of 4.9 mC on it, What is the potential near its surface in MV
A particle moves with constant acceleration a . The expression vi+at represents the particle's velocity at what instant in time? Here are the choices.
A 120-V motor has mechanical power output of 2.50 hp. It is 90.0% efficient in converting power that it takes in by electrical transmission into mechanical power, Find the current in the motor
hearing the siren of an approaching fire truck, you pull over to the side of the road and stop. As the truck approaches, you hear a tone of 460 Hz; Find speed of the truck
Two long parallel wires 40 cm apart are carrying currents of 10 A and 20 A in the opposite direction. What is the magnitude of the magnetic field halfway between the wires
A 56.0 g sample of a conducting material is all that is available. The resistivity of the material is measured to be 1.22×10-7 ?m, What will be the diameter of the wire
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