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Hooke's law describes a certain light spring of unstretched length 33.0cm. When one end is attached to the top of a door frame, and a 6.4kg object is hung from the other end, the length of the spring is 48cm. A. spring constant B. the load and the spring are taken down. two people pull in opposite directions on the ends of the spring, each with a force of 190 N. Find the length of the spring and its situation.
Constructive interference occurs when a soap bubble reflects light of wavelength 430 nm. What is the minimum thickness of the bubble
child whose mass is 30 kg sits on a merry-go-round at a distance of 2 m from the center. What is the magnitude of the net force (in Newton) acting on the child?
The atronomer was studying the moon of jupiter called lo. He noticed that measurements taken in the spring when used to predict the position of lo in the fall were off by 18.177 minutes of time. determine the value of the speed of light that Roemer..
Would you expect to get a more accurate value for m using Equation m = h'/h in the situation where the lens is closest to the object or in the situation where the lens is furthest from the object?
A capacitor should have charge of magnitude 4.5 microC on each plate, and an electric field of 2.0 kV/mm between the plates
A 15 kg box is pulled horizontally by a 20 N force on a frictionless surface. What is the change in kinetic energy of the box
A pendulum of length 1.5 m swings back and forth in a friction free laboratory environment. The pendulum is 1.4 m above the floor at the high point of its swing and 1.3 m above the floor at the low point.
A 2.3kg cart is rolling across a frictionless, horizontal track toward a 1.5kg cart that is held initially at rest. find the velocity of the first cart when the second cart was still at rest
An object is placed 19cm from a certain mirror. The image is half the size of the object, inverted, What is the radius of curvature of the mirror
When a person is given intravenous fluid, the bag containing the fluid is typically held about 0.9 m above the person's body. what is the pressure in the person's blood
A certain type of laser emits light that has a frequency of 5.7 1014 Hz. How many wavelengths are there in one pulse
A 42-g ball consists of a plastic spherical shell and a water-filled core. the shell has an outside diameter equal to 56.2 mm, What is the density of the plastic
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