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The distance among the eyepiece and the objective lens in a certain compound microscope is 24.0 cm. The focal length of the objective is 0.460cm, and that of the eyepiece is 2.00 cm. Discover the overall magnification of the microscope.
A disk released from the top of an inclined plane has a speed of 6.32 m/s at the bottom. How high is the upper end of the inclined plane
A source of 116m In (half-life = 54.0 min.) is counted using a G-M tube. Successive 1-min observations gave 131,340 counts, calculate the true interaction rate in the G-M tube at 12:00
A piano tuner stretches a steel piano wire with a tension of 964N. What is the frequency of its fundamental mode of vibration
Earth's atmosphere is constantly bombarded by cosmic ray protonsthat originate somewhere in space. If the protons all passed through the atmosphere, assume that each square meter of Earth'ssurface would intercept protons at the average rateof 1400..
A kid of mass 30 kg is initially at the center of a merry-go-round, which we can model as a uniform disk. What is the angular speed of the merry-go-round now in rev/min
an insulated container is filled with a mix of 400 g of water at 20 C and 60 g of ice at 0 C. assuming negligible heat is exchanged with the container, what is the temperature of the mixture when it reaches thermal equilibrium.
A uniform cylindrical turntable of radius 1.80 m and mass 25.2 kg rotates counterclockwise in a horizontal plane with an initial angular speed of 4pi rad/s. Find the final angular speed of the clay and turntable
Unpolarized light of intensity I0 is incident on three polarizing filters. The axis of the first is vertical, What light intensity emerges from the third filter
A motorcyclist intends to perform a stunt in which he jumps a river 25 meters wide. The motorcyclist must jump from a cliff on one side to a cliff 20 meters lower on the other side. How far will he travel in a horizontal direction
A 0.45 caliber bullet (m = 10.7 g) is fired into a large block of wood (M = 0.750 kg) so that the bullet becomes lodged in the block. What is the speed of the block after the collision
A low-power laser used in a physics lab might have a power of 0.55 mW and a beam diameter of 2.6 mm. Calculate the average light intensity of the laser beam
An archer pulls her bowstring back 0.430 m by exerting a force that increases uniformly from zero to 232 N. What is the equivalent spring constant of the bow
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