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An object is 12cm to the left of a lens with f=20cm. a secondlens with f=4cms is 2cms to the right of the first lens. find theimage distance as measured from the second lens?
If 600 j of heat are added to 50 g of water initially at 20 degrees C. What is the final temperature of the water
A partly-full paint can has 0.82 U.S. gallons of paint left in it. What is the volume of the paint
A hunter is standing on flat ground between two vertical cliffs that are directly opposite one another. He is closer to one cliff than the other. find the distance (in m) between the cliffs
Inside a motor, 30.5 A passes through a 250 turn circular loop that is 10.0 cm in radius. what is the magnetic field strength created
A child on a swing of length R= 2 meters is given an initial velocity v=8.9 m/s. Calculate the height from the bottom when the cord just goes slack, and the child leaves the circular path
A photon of wavelength 4.28 x 10^-2 nm strikes a free electron and is scattered at an angle of 32.0 degrees from its original direction. find the energy gained by the electron
A series circuit with R=100ohms, L=.5H and C=50 MuF is driven by an ac signal of frequency 75 Hz and amplitude of 18V. what are the rms values of the voltage and current
Two protons are moving directly toward one another, When they are very far apart, their initial speeds are 2.77 106 m/s. What is the distance of closest approach
A 5,000 kg satellite is orbiting the Earth in a circular path. The height of the satellite above the surface of the Earth is 800km. The velocity of the satellite is (Me = 5.98 x 10^24 kg, Re = 6.37 x 10^6 m, G = 6.67 x 10-11 N • m2/kg2)
A negative charge -0.550 µC exerts an upward 0.700 N force on an unknown charge 0.280 m directly below it. What is the unknown charge (magnitude and sign)? What are the magnitude and direction of the force that the unknown charge exerts on the -0.550..
If a 500.0g cart had its velocity change from 1.65 m/s to 1.23 m/s over a period of 2.50 seconds. Calculate and record the force acting
A hiker starts at his camp and moves the following distances while exploring his surroundings: 60.0 m north, 2.95 102 m east, Find his resultant displacement from camp
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