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Two strings are vibrating at the equal frequency of 234 Hertz. After the tension in one of the strings is decreased, an observer hears six beats each second when the strings vibrate together. Obtain the new frequency in the adjusted string.
a 27 kg block is pulled across a horizontal surface by a rope. the block has an acceleration of 3.5 ms2 and the
A person on a safari wants to take aphotograph of a hippopotamus from a distance of 76.0 m. What focal length lens should be used
A narrow beam of light with wavelengths from 450 nm to 700 nm is incident perpendicular to one face of a 32.00 degrees prism made of crown glass
An athlete swings a ball, connected to the end of a chain, in a horizontal circle. Which rate of rotation gives the greater speed for the ball
What is the magnitude of an electric field in which the electricforce it exerts on a proton is equal in magnitude to the proton's weight?
question a bowling ball is released from rest and and rolls without slipping down an inclined plane at 18deg to the
Two protons (each with rest mass M=1.67×10?27kg) are initially moving with equal speeds in opposite directions. What is the kinetic energy of each proton
An Electronic lift can raise a 216 kg mass a distance of 25.7 m in 5.0 seconds. What was the work done by the lift
a 2.30-cm-high object is situated 20.1 cm in front of a concave mirror that has a radius of curvature of 13.4 cm.
ssuming the kinetic energy of a neutron, confined inside acubic box, is 10 MeV in its ground state, calculate the size of the box. What are the energyies of the next three excited states?
Four very thin rods, each 9.0 m long, are joined to form a square.the center of mass of the square is located at the coordinateorigin. The rod on the right is then removed. What are the x- andy- coordinates of the center of mass or the remaining thre..
A 45.0 kilogram girl is standing on a 159 kilogram plank. The plank, originally at rest, is free to slide on a frozen lake, which is a flat, frictionless surface. Find the velocity of the plank relative to the surface of ice
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