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You have a compound microscope with a barrel of length 163 mm. The focal lengths of the objective and the eyepiece are 3.55 mm and 26.9 mm, respectively. Find the total angular magnification of the microscope for a person whose near point is 25.0 cm away.
During the course of 0.130 s, the field is changed to one of 0.300 T pointing down. Illustrate what is the average induced emf in the coil?
With what minimum speed should you toss a 140g ball straight up to hit the 11.0m-high roof of the gymnasium if you release the ball 1.30m above the ground? Resolve this problem using energy.
For the Atwood's machine, suppose the masses have an initial speed of v = 0.22 m/s and that m2 is moving upward. How high does m2 rise above its initial position before momentarily coming to rest, given that m1 = 3.5 kg and m2 = 3.1 kg.
Two football players go to kick a ball at the same time. One kicks it with a velocity of 25ms-1 at an angle of 12o to the horizontal, What is the resultant velocity of the bal
Skater A, with unknown mass and unknown initial speed, bumps into stationary Skater B, mass 60.0 kg. What was the mass and initial speed of Skater A
Radioactive decay of granite and other rocks in the Earth's interior provides sufficient energy to keep the interior molten, heat lava, and supply warmth to natural hot springs.
The human body can survive an acceleration trauma incident (sudden stop) if magnitude of the acceleration is less than 250;{rm m}/{rm s}^{2}.
An electron has a de Broglie wavelength ? = 7.0×10?10m, What voltage was needed to accelerate it to this speed and What is its speed
Assume that the earth is a uniform density spherical mass. (This assumption is not correct but we will use it for simplicity in working the problem.)
A woman has a mass of 59 kg, What is her weight on earth and What are her mass and her weight on the moon
A certain type of laser emits light that has a frequency of 5.4 x10^14 Hz. The light, so, occurs as a series of short pulses, each lasting for a time of 2.7 x10-11 s.
Consider a large parallel plate capacitor with circular plates of radius R. suppose that the electric field between the plates is increasing.
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