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Helium neon laser light has a wavelength in air of 632.8 nm. What is the energy of a single photon in the beam?
You are driving along a highway at 35.0 m/s when you hear the siren of a police car approaching you from behind, What is the speed of the police car
Light of wavelength 700 nm is incident on the face of a fused quartz prism (n = 1.458 at 700 nm) at an incidence angle of 72.4°. Calculate the angle of refraction at the first surface
If the ultimate shear strength of steel is taken to be 2.50x 10^9 Pa, what force is required to punch through a steel plate 2.2cm thick? Assume the superhero's fist has cross-sectional area of 8.00x 10^1 cm2 and is approximately circular.
A 3.2 kg block is hanging stationary from the end of a vertical spring that is attached to the ceiling. What is the elastic potential energy of the system
A 171 kg block of ice at 0.0°C is placed in a large lake. The temperature of the lake is just slightly higher than 0.0°C, and the ice melts very slowly, What is the entropy change of the universe
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
What is the speed of the electron when it strikes the target? How far does it fall under the influence of gravity during its flight?
A 60 kg woman stands on a very light, rigid board that rests on the bathroom scale at each end. She is 1.5m away from one side and 0.5 m from the other.
A camera lens used for taking close-up photographs has a focal length of 21.5 mm. The farthest it can be placed from the film is 30.0mm. What is the closest object that can be photographed
A double convex lens has equal curvature radii of 35 cm. What is the refrative index of the lens
mitch throws a 50 gram lump of clay with a speed of 20 m/s at a 500 gram target, find the coefficient of friction between the target and the surface
An electron and a proton are separated by 2.4 nm, What is the magnitude of the force on the electron
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