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A 43 power refracting telescope (wherepower is the angular magnification) has an eyepiece with a focallength of 4.2 cm. How long is the telescope?
________? m
There are two categories of ultraviolet light. Ultraviolet A ( UVA ) has a wavelength ranging from 320 nm to 400nm. What are the ranges of the wave numbers for UVB
a hollow copper wire with an inner diameter of 1.1 mm and an outer diameter of 1.8 mm carries a current of 15 a. what
Coil 1 has L1 = 47 mH and N1 = 104 turns. Coil 2 has L2 = 68 mH and N2 = 215 turns. The coils are fixed in place; what self-induced emf appears in that coil
Suppose a constant ratio of 13.60 counts per minute per gram of living matter. A sample of a petrified tree was found to give 1.8 counts per minute per gram. How old is the tree.
You are designing a small coil (called a search coil) to measure magnetic fields. It is to have a diameter of 3.80 cm, How many turns should the coil have
Water ripples are produced by making a cork oscillate up and down at a frequency of 5 Hz. What is the period of the water ripples
The power capacity for all nuclear power plants in the United States is 1.01E5 MW. In one hour, what is the total change in the mass of the nuclear fuel
A uniform chain of length 8.00m initially lies stretched out on ahorizontal table. Determine the speed of the chain as all of it leavesthe table, given that the coefficient of kinetic friction betweenthe chain and the table is .4
an artillery shell is fired with a minimal velocity of 420 ms at 53o above the horizontal. to clear an avalanche it
A circular coil has a 20.0 cmradius and consists of 30.0 closelywound turns of wire. If no current is in the coil, what magnetic flux links its turns
In a particle accelerator, a proton reaches an acceleration of 9.0 × 1013 m/s2. The mass of a proton is 1.7 × 10 -27 kg. What is the force on the proton?
For an observer looking at a small ball in an inertial reference frame (IRF) which of the following statements is true?
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