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water waves approach an underwater shelf where the velocity changesfrom 2.8m/s to 2.5m/s. If the incident wave crests make a 35 degree angle with the shelf, what will be the angle of refraction?
What is the end daughter nucleus of a Th-234 nucleus that undergoes a series decay of 4 alpha decays followed bt one beta decay. Determine the energy produced in the following reaction
A block of wood is held in place against a rough wall by someone pushing on it with a force directed upward at 28 degrees above the horizontal, What is the mass of the block of wood
When a car's starter is in use, it draws a large current. The car's lights draw much less current. As a certain car is starting, What is its internal resistance
An electron has a momentum that is two times larger than its classical momentum. Find the speed of the electron
A ray of light strikes a thick sheet of glass (n= 1.5) At an angle of 25 degrees with the normal. Find the angle of the refracted ray within the glass
An object travels in a circle of radius 2.0 m. At time t = 0, the object has a velocity of 10 m/s and it slows uniformly to a stop in 30s. a. Draw a circle and indicate the velocity vector and the acceleration vector at some time between 0 and 30s.
a pulley having a rotational inertia of 1.0x104 gcm2 and a radius of 10 cm is acted upon by a force applied
a student holds a tuning fork oscillating at 256 hz. he walkstoward a wall at a constant speed of 1.33 m/s. what beat frequency does he observe between the tuning fork and its echo
while taking a ride in a hot-air balloon innapa valley francisco wonders how high he is. to find outhe chooses a
A particle of mass 7.22 x 10^-27 kg, moving at 7.06 x 10^5 m/s, strike an identical particle which is initially at rest. What are the final speeds of the particles
A ball of mass m makes a head-on elastic collision with a second ball (at rest), What is the mass of the second ball
A horizontal circular platform rotates counterclockwise about its axis at the rate of 0.877 rad/s. You, with a mass of 70.5 kg, compute the total angular momentum of the system
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