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The force constant of a spring is 135 N/m.
(a) Find the magnitude of the force required to compress the spring by 4.20 cm from its unstretched length.
(b) Find the magnitude of the force required to stretch the spring by 7.00 cm from its unstretched length.
A flashlight on the bottom of a 4-m deep swimming pool sends a ray upward and at an angle so that the ray strikes the surface of the water 1.70-m from the point directly above the flashlight. What angle (in air) does the emerging ray make with wat..
An unstable particle is at rest and suddenly breaks up into two fragments. What is the velocity of the more massive fragment
A certain LCD projector contains a single thin lens. An object 24.0 mm high is to be projected so that its image fills a screen 1.86 m high. Determine the focal length of the projection lens
How much work does the electric field do in moving a -7.7 microCoulomb charge from ground to a point whose potential is +positive 55V higher.
a block mass 15.92kg supported by a vertical massless cable is initially at rest. The block is then pulled upward with a constant acceleration of 2.11m/s^2. what is the net force acting on the mass
You're caught running a red light on Hwy 316. Attempting to impress the skeptical patrol officer with your physics knowledge, If you had been traveling that fast and the light actually was yellow, what color would it have seemed to you
In a certain vacuum tube, electrons evaporate from a hot cathode at a slow, steady rate and accelerate from rest through a potential difference of 39.0 V. What is the maximum value for the beam current that will result in only one electron at a tim..
An elevator's cable snaps and its emergency brakes start gripping at the secondary line in order to slow its descent. How fast is the elevator going after falling 3 stories
A marble slides without friction in a vertical plane around theinside of a smooth, 21 {\rm cm}-diameter horizontal pipe. The marble's speed at the bottom is 4.5 {\rm {m}/{s}} this is fast enough sothat the marble makes a complete loop, never losin..
A tortoise can run with a speed of 0.10m/s, and a hare can run 20 times as fast. What is the length of the race
question1a ferryboat transports tourists among three islands. it sails from the first island to the second island 5.98
53.3-cm-long uniformly charged rod is sealed in a container. the total electric flux leaving the container is
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