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The speed of light in a certain medium is 2.2E10^8 m/s. What is the index of refraction of this medium?
A frictionless, vertical wire has two metal beads on it. The beads are held 30 cm apart by horizontal magnets, If the two beads each have a mass of 49.7 g, what is the kinetic energy of the second immediately after impact
At the right you see that a string (mass negligible) passes over a pulley. calculate the normal force of the floor on the bottom of the 5 kg mass
A length of aluminum wire has a resistance of 10.0 ? at 32.0°C. When the wire is warmed in an oven and reaches thermal equilibrium, the resistance of the wire increases to 26.2 ?. find the temperature of the oven
Water flowing through a garden hose of diameter2.70cm fills a20.0-L bucket in1.30min. what is the speed of the water leaving the nozzle
A hydrogen atom is moving at a speed of 125.0 m/s. It absorbs a photon of wavelength 97 nm that is moving in the opposite direction. By how much does the speed of the atom change
You are driving east on 8th Street (Tamiami Trail) at a speed of 32. In the rearview mirror, What is the frequency of the siren
We are not normally aware of the gravitational or electric force between two ordinary objects. What is the reason in each case? Give an example where we are aware of each one and why.
A unifrom solid disk is rolliong on a level surface with a speed of 45.0 m/s. How far along the incline will the disk roll
The temperatures indoors and outdoors are 297 and 311 K, respectively. How much heat is removed from the house
The drawing shows two crates that are connected by a steel (Young's modulus 2.0 x 1011 N/m2) wire that passes over a pulley. determine the change in length of the wire
A rifle with a barrel length of 65 cm fires a 9 g bullet with a horizontal speed of 380 m/s. find resistive force does the wood exert on the bullet
You are the science officer on a visit to a distant solar system. Prior to landing on a planet you measure its diameter to be 1.8x10^7m and its rotation period to be 22.3 hours, find the mass of the planet and star
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