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A) What is the frequency of blue light that has a wavelength of 450 nm?
B) What is the frequency of red light that has a wavelength of 650 nm?
C) What is the index of refraction of a material in which the red-light wavelength is 450 nm?
An asteroid is discovered in a nearly circular orbit around the Sun, What is the asteroid\'s orbital period, its \"year,\" in terms of Earth years
You and your friend are practicing pass plays with a football. You throw the ball at 35 degrees above thehorizontal at 19 m/s.
A 22 gauge NiAg wire is 22.5 km long. The resistivity of the NiAg wire is 33.0*10^-8 Ohm*m. The cross sectional area of the wire is 3.22*10^-7. How much energy is dissipated in a day
An antique phonograph turntable has a kinetic energy of 2.60×10?2 J when turning at an angular velocity of 47.0 rev/min
Two boxes A and B are connected to each end of a light vertical rope. A constant upward force 80.0 is applied to box. Starting from rest, box descends 10.4 in 3.40. The tension in the rope connecting the two boxes is 37.0
The bullet passes right through and emerges on the other side with a speed of 100 m/s, and the saxophone is given a speed of 4.8 m/s.
A spaceship leaves Earth traveling at 0.65 c. A second spaceship leaves the first at a speed of 0.80 c with respect to the first. Calculate the speed of the second ship with respect to Earth if it is fired directly backward toward Earth
At an air show, a jet plane has velocity components v_x = 645km/h and v_y = 415km/h at time 4.00s and v_x = 878{km/h and v_y = 450km/h at time 6.77s. For this time interval, find the direction of its average acceleration
A freezer has a coefficient of performance of 2.52 . The freezer is to convert 1.90 kg of water at 26.0 Celsius 1.90 kg of ice at -5.00 Celsius in 1 hour. How much wasted heat is rejected to the room in which the freezer sits
One of the asteroids, asty, looks like an elongated potato. Surprisingly it has a tiny (compared to asty) spherical moon! Find the escape speed on Dactyl
A criminal is escaping across a rooftop and runs off the roof horizontally at a speed of 5.4 m/s, hoping to land on the roof of an adjacent building. Air resistance is negligible. The horizontal distance between the two buildings isD, and the roof of..
An eagle with 1.8m wingspan flaps its wings 21 times per minute, each stroke extending from 42%u2218above the horizontal to 42%u2218 below. What's the average tangential velocity of the wingtip
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