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A microscope with a tube length of 200 mm achieves a total magnification of 400x times with a 20x times objective and a 20x times eyepiece. The microscope is focused for viewing with a relaxed eye.
How far is the sample from the objective lens?
A 1.05-kg bucket is tied to a rope of negligible mass that is wrapped around a pole mounted horizontally on frictionless bearings. When the bucket is released from rest
Imagine that the coefficient of kinetic friction between a certain 15kg box and the floor is 0.35. How hard would you have to push on it to move it at the constant speed of 2.6m/s across the floor.
A 1.8m -long, 600g rope pulls a 2.0kg block of ice across a horizontal, frictionless surface. The block accelerates at 4.0m/s2, How much force pulls forward on the block of ice
define the speed of the particle when the string is parallel to the electric field.
The first active volcano observed outside the Earth was discovered in 1979 on Io, one of the moons of Jupiter. Assume a volcano on another moon is observed to be ejecting material to a height of about 2.19 x10^5 m.
the light intensity incident on a metallic surface with a work function of 1.17eV produces photoelectrons with maximum kinetic energy of 4.17eV. what is the maximum kinetic energy of the photoelectrons
a 15kg block is accelerated at 2.4m/s^2 up a frictionless plane inclined at 5 degrees to the horizontal, wth the speed increasing from 10m/s to 35m/s. what is the change in the blocks mechanical energy
On a workday the average decibel level of a busy street is 74 dB, with 100 cars passing a given point every minute. what is the decibel level of the street
A copper flask with a volume of 80 cm^3 is filled to the brim with olive oil. If the temp of the system is increased from 8C to 52C, how much oil spills
A 6" (nominal pipe size) schedule 40 steel pipe has a chamfered entrance and 300 ft. long. what is the total loss of head
q1. a toolbox is carried from the base of the ladder at point a. the toolbox comes to a rest on a scaffold 5.0 m above
A copper pot sits on a hot plate that is at a remperature of 140 C, How long before one half the pots contents evaporate
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