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When a person visits the local tanning salon, they absorb photons of ultraviolet light (UV) to get the desired tan. What are the frequency and wavelength of a UV photon whose energy is 6.5 x 10^-19 J?
A student, starting from rest, slides down a water slide. On the way down, a kinetic frictional force (a nonconservative force) acts on her. how fast is the student going at the bottom of the slide
after inhaling most humans will float in fresh water albeit with only a small fraction of their body above water. after
A solid sphere of mass 6.0 kg is mounted on a vertical axis and can rotate freely without friction, What is the speed of the block after it has fallen 80 cm
In a discussion person A is talking 1.6 dB louder than person B, and person C is talking 3.3 dB louder than person A. What is the ratio of the sound intensity of person C to the sound intensity of person B?
A 2.5 m-long pendulum is released from rest when the support string is at an angle of 20° with the vertical. What is the speed of the bob at the bottom of the swing?
A physics demo launches a ball horizontally while dropping a second ball vertically at exactly the same time. [Delayed Feedback] 1) Which ball hits the ground first?
A sealed tank containing seawater to a height of 11.0 m also contains air above the water at a gauge pressure of 3.00 atm. Calculate the efflux speed of the water
Calculate : a) the pressure at this depth b) the change in volume of the sphere do to the pressure GIVEN : density of copper = 8.9*10^3 kg/m^3 youngs modulus = 11*10^10 N/m^2
A 125-turn circular coil of radius 2.75 cm is immersed in a uniform magnetic field that is perpendicular to the plane of the coil. Find the magnitude of the average EMF
a projectile fixed vertically up from a canon rises 200m before returning to the ground. if the same were to fire the
A 5kg piece of metal displaces 0.75L of water when submerged. What is the buoyant force on the piece of metal? Give your answer in Newtons
A ball of mass m = 2.6 kg moving with a speed of v0 = 14.8 m/s strikes an identical ball which was initially at rest. What is the final speed of the struck ball
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