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A satellite in Earth's orbit is accelerating towards the Earth. Explain why, on average, the satellite is not getting closer to the Earth. Why?
When you inhale helium and speak, your voice becomes far higher in pitch. Why?
A Carnot engine extracts 950J from a 600K reservoir during each cycle and rejects 480J to a cooler reservoir. It operates at 22 cycles per second. Find the work done during each cycle
In refraction the angle of refraction depends on the wavelength, longer wavelengths bend less. How does the wavelength affect the angle of reflection
parallel plate capacitor has capacitance of 2.0 ?F and plate separation of 1.0 mm. What is the magnitude of the greatest charge
current i 38.9 ma is set up in a loop having two radial lengths and two semicircles of radii a 7.06 cm and b 17.2 cm
A small light planet has a mass 1/100 that of Earth and radius 1/4 that of Earth. An astronaut weighs 600N on Earth. How much would the astronaut weigh on the surface of the smaller planet?
A constant-pressure insulated piston-cylinder device contains 1.7 kg of saturated liquid-vapor mixture of water at 150 kPa with an initial quality of 0.2. Calculate the change in exergy of the contents in kJ
A 2.08 nF capacitor with an initial charge of 4.55 µC is discharged through a 1.25 k? resistor. What is the maximum current in the resistor
In a closed system, the loss of momentum of one object ____________________ the gain in momentum of another object. The law of reflection states that the angle of reflection is equal to the angle of ____________________.
Only radiation with wavelengths smaller than 0.2424um is capable of dissociating molecular oxygen into atomic oxygen, according to the reaction: O2 + photon
The current in the electron beam of a computer monitor is 415 ?A. How many electrons per second hit the screen
A singly charged positive ion has a mass of 1.77 × 10^?26 kg. Find the radius of the ion's path in the field
an 830-kg race car can drive around an unbanked turn at a maximum speed of 58 ms without slipping. the turn has a
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