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Two identical 1.50 kg masses are pressed against opposite ends of a light spring of force constant 1.75 N/cm , compressing the spring by 20.0 cm from its normal length. Find the Speed of each mass when it has moved free of the spring on a frictionless horizontal table.
A 2.3cm high object is located 30cm from a diverging lens, whose focal length is 14cm. What is the height of the image produced by the lens
The clapper is a small, 1.8 kg mass attached to one end of a slender rod that has length L and negligible mass. The other end of the rod is attached to the inside of the bell
(a) Calculate the lowest energy of the electron in He+. Is it lower than that of H.(b) If this electron absorbs a photon and makes a transition to the 2p orbital, what is the frequency of the absorbed photon
their debt flotation costs are currently estimated to be 4% of the issue's value. GST's federal-plus -tax rate is 40%. Illustrate what is the dollar floatation cost on the new issue?
Four equal charges of +4.9×10-6 C are placed on the corners of one face of a cube of edge length 7.0 cm. A charge of -4.9×10-6 C is placed at the center of the cube. What is the magnitude of the force on the charge at the center of the cube?
Galileo dropped a ball from the tower of Pisa. The ball hit the ground in 3 seconds. what was the speed on striking the ground
A golf ball strikes a hard, smooth floor at an angle of θ = 31.6°, rebounds at the same angle. The mass of the ball is 0.043 kg, and its speed is 45m/s just before and after striking the floor. What is the magnitude of impulse applied to the golf bal..
at a given instatn in time, a traveling EM wave is noted to have its maximum magnetic field pointing west, what are the maximum values for the two fields
A glass plate (n=1.62) is coated with a thin, transparent film (n=1.27). Light reflected at normal incidence is observed as the wavelength is varied continuously. Find the thickness of the film
A block starts with a certain speed at the top of a frictionless inclined plane with an unknown angle to the horizontal. To calculate the time required for the block to reach the bottom of the plane.
q1. why do cities directly east of the rockies such as denver colorado receive more precipitation than cities east of
On a warm summer day (29?C), it takes 4.50s for an echo to return from a cliff across a lake. What is the temperature on the winter day
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