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An astronomical telescope uses an eyepiece of power +80.000 D. If the length of the tube is 2.0125 meter, obtain what is the magnification of the telescope?
a 3.0E6 resistor is connected in series with an initailly uncharged 0.28E-6 F capacitor. What is the maximum current in the circuit and when does it occur
What is the mass of nitrogen in an nitrogen tank at 20C if the tank has a volume of 0,20m^3 and nitrogen pressure in the tank is 4,0 x 10^6 N/m^2
A wheel with radius 1.50 m is turning about a horizontal axis through its center (the plane of the wheel is vertical). The wheel starts from rest and undergoes constant angular acceleration in the counter clockwise direction. At the lowest point of i..
Helium gas with a volume of 2.60L under a pressure of 1.70atm and at a temperature of 43.0 oC is warmed until both the pressure and volume of the gas are doubled. How many grams of helium are there
A very long solenoid with a circular cross section and radius r= 8.1cm with n= 1.90E+4 turns/m has a magnetic energy density uB= 5.70 mJ/m3. What is the current in solenoid.
a game show contestant won a prize by pushing a bowling ball 20 m using her nose.the amount of work done was 1470 j. how much force did the contestant exert on the ball
A person is losing thermal energy through the skin at a rate of 120 W when his skin temperature is 30°C. find At what rate is he now losing thermal energy
the moment of inertia of a 4.0m long board pivoted at its center is 25kgm2. find the moment of inertia when it is used
While exploring a cave, a spelunker starts at the entrance and moves the following distances: 75.0 m north, 250 m east, 170 m at an angle 30.0° north of east, and 150 m south. Discover the resultant displacement from the cave entrance and the directi..
A uniform meter stick has a 45.0 g mass placed at the 20 cm mark. If a pivot is placed at the 42.5 cm mark and the meter stick remains horizontal in static equilibrium, what is the mass of the meter stick?
For the real or imaginary nucleus of 83X^193, find the net electrical charge of the nucleus and the number of nucleons
A 50.0 kilogram child stands at the rim of a merry-go-round of radius 2.15 meter, rotating with an angular speed of 2.70 rad/s. Find the child centripetal acceleration
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