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Solve the given questions:
Question 1: You charge an object by rubbing it, and then shake it at 1 Hz. How much energy does each photon carry?
Question 2: Making estimates. The human eye can detect as few as 9760 photons per second entering the pupil. About how much energy is this, per second? (Assume the photons have a wavelength of 380 nm.)
Can someone please explain what the heck is going on?
A water wave traveling in a straight line on a lake is described by the equation y(x,t)=(3.75cm)cos(0.450cm^-1 x+5.40s^-1t), How fast does a wave crest travel past the fisherman
A resistor with resistance 14M? is connected in series with a capacitor with capacitance 1.0?F and a battery with emf 13.5.0V. what is the time constant
The potiential energy of a + 2 * 10^-6 C charge decreases from 0.06J to 0.02J, What is the change in electric potiental between these two points
A rotating door is made from four rectangular glass panes, estimate the magnitude of the door's angular acceleration
Two parallel conducting plates are separated by 10.0 cm, and one of them is taken to be at zero volts. What is the voltage among the plates?
A helium-neon laser (? = 632.8 nm) is used to calibrate a diffraction grating. If the first-order maximum occurs at 21.5°, what is the spacing between adjacent grooves in the grating? (In this problem, assume that the light is incident normally on th..
Mars has two small moons orbiting around it (Deimos and Phobos). Determine the approximate orbital period of Deimos
A man normally consumes 8.4 MJ of food energy per day. He then begins running a distance of 9km four times per week. If he expends energy at the rate of 450W while running at 12 km/h , how much more food energy should he consume daily in order to mai..
What is a typical neutron star density
A high-voltage transmission line with a resistance of 0.345 ?/km carries a current of 1.45 kA. What is the power loss due to resistance in the line
A charged particle moves by a constant speed during a region where a uniform magnetic field is present. If the magnetic field points straight upward, the magnetic force acting on this particle will be maximum when the particle moves ......?
a 25 gram bullet moving at 550 ms strikes and imbeds itself in a 3.5-kg wooden block that is at rest on a level
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