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The earth has a surface temperature of approximately 18oC and radiates like a blackbody. Using Stefan-Boltzmann’s Law compute much energy the earth will emit over all wavelengths? Using Wien’s Law compute the wavelength at which it will emit the maximum amount of energy?
Assuming that the atom was initially at rest, determine the recoil speed of the hydrogen atom when this photon is emitted
A block of steel (density = 7.9 g/cm^3) gauges 5 inches x 8 inches x 37 inches and is moving at 104 feet per minute. Discover the momentum of the block in kg*m/s.
A pair of speakers separated by 0.700m are driven by the same oscillator at a frequency if 690Hz. an observer originally positioned at one of the speakers begins to walk along a line perpendicular to the line joining the speakers.
Protons carry an electric charge ofe = 1.60×10−19 C, electronscarry a charge of −e, and neutrons are electricallyneutral. Protons and neutrons have a mass of1.67×10−27 kg, and electrons have a mass of9.11×10−31 kg.
A 0.70 × 103 kg sports car collides into the rear end of a 2.2 × 103 kg SUV stopped at a red light. calculates the speed of the sports car at impact
an ice chest at a beach party contains 10 cans of soda at 2 deg c. each can of soda has a mass of 0.36 kg and a
What is the Lens Equation? What do o, i and f stand for in the equation and what are the five parts of the Optical Bench used in this experiment? Briefly describe what each part does.
Two point particles of charge Q1 = 43 µC and Q2 = 89 µC are found to have a potential energy of 38 J. What is the distance between the charges
a. a positive charge is dropped downward into a uniform magnetic field directed into the page. what direction is the
You land on a new planet with radius 5000km. You measure the freefall acceleration due to gravity to be 8.5m/s^2 at the surface
The potential equals 7.52 V at the midpoint between two point charges that are 0.95 m apart. One of the charges is 1.10 10-9 C. Find the value of the other charge.
An 840 kg roller coaster is launched from a giant springof constant k = 31,000 N/m on a frictionless loop-the-loop track ofradius 6.2 m. Calculate the minimum compression of the spring
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