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Light from the sun arrives at the earth at the rate of about 1400 W/m^2 of area perpendicular to the direction of the light. Assuming that sunlight consists exclusively of light of wavelength 6x10^-7 m, find the number of photons per second that fall on each square meter of the earth's surface directly facing the sun.
What is the linear speed of the hoop's center of mass just as the hoop leaves the incline and rolls onto a horizontal surface
The drawing shows a rectangular block of glass (n = 1.52) surrounded by liquid carbon disulfide (n = 1.63). At what angle of refraction does the ray leave the glass at point B
Two identical cars (m = 1350 kg) are traveling at the same speed of 28.0 m/s. estimate the magnitude of the total momentum of the two cars
A proton takes 99.0?s to complete one orbit around a 14.5 m diameter cyclotron. What's the cyclotron's magnetic field
A Speaker (which is to be treated as the source point) emits sound at a frequency of 4x10^3 Hz and a power of 28 Watts. What is the power intercepted by your ear
Which of the following factors do not affect the pressure at the bottom of a cup? Explain answer a. Depth of the liquid b. Density of the liquid c. The value of the acceleration of gravity d. The shape of the cup
A Michelson interferometer splits a beam of light of unknown wavelength producing a bright fringe (i.e., all of the intensity) at the detector, What is the wavelength of the unknown light
A large parallel plate capacitor has plate separation of 0.98 cm and plate area of 230 cm2. How much work is done on the capacitor as the plate separation is increased to 1.96 cm
A diffraction grating has a spacing of 350 lines per mm and sits L = 47.7 cm from a screen. what is the wavelength of the laser
The turbines in a hydroelectric plant are fed by water falling from a 50-m height, what is the mass flowrate of water required to power a 200-watt light bulb
A water balloon slingshot launches its projectiles essentially from ground level at a speed of 25.0m/s, For how many seconds will the balloon be in the air
A 2.90-kg block starts from rest at the top of a 30.0° incline and slides a distance of 2.10 m down the incline in 1.20 s. Find the friction force acting on the block
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