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1. A helium-neon laser beam has a wavelength of 633 nm in air. The beam takes 6.90 ns to travel through 150 cm of an unknown liquid. What is the wavelength of the light in that liquid? Please show work.
Two children are playing on a balanced seesaw. One child with a mass of 48 kg sits 1.4 m from the center. Where on the other side must the second child sit
A person walks 36° north of east for 2.36 km. How far would another person walk due north and due east to arrive at the similar location.
Sunlight, with an intensity of 657 W/m2, strikes a flat collecting surface perpendicularly and is totally absorbed. find the force in micronewtons that acts on the surface
Two trains, each having a speed of 28 km/h, are headed at each other on the similar straight track. A bird that can fly 56 km/h flies off the front of one train, when they are 66 km apart and heads directly for the other train. On reaching the other ..
Suppose a capacitor in a video camera has a capacitance of 26.0 ?F, How much potential energy is stored in the capacitor
A car is driving directly north on the freeway at a speed of 117 km/h and a truck is leaving the freeway driving 76 km/h in a direction that is 40° west of north. What is the velocity of the truck relative to the car?
A person scuffing her feet on a wool rug on a dry day accumulates a net charge of -95?C. By how much does her mass increase
Three point masses each of mass m are connected by two thin rods each of mass M and length L. The central mass is at an origin and the z-axis is directed out of the page.
A parallel-plate capacitor is formed from two 2.20 cm multiplied by 2.20 cm electrodes spaced 2.0 mm apart. What is the charge (in nC) on each electrode
A small space telescope at the end of a tether line of length L moves at linear speed v about a central space station. What will be the linear speed of the telescope
What are the first, second, and third frequencies audible from a 20cm long organ pipe when (1) only one end is open and when (2) both ends are open. The speed of sound through the air inside the organ pipe is 343 m/s. (Hint: if a harmonic does not..
A test charge of +2 micro C is placed halfway between a charge of +6 micro C and another +4 micro C sperated by 10cm. what is the magnitude of the force on the test charge
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