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A solar collector is placed in direct sunlight where it absorbs energy at the rate of 880 J/s for each square meter of its surface. The emissivity of the solar collector is e=0.75. What equilibrium temperature does the collector reach? Assume that the only energy loss is due to the emission of radiation.
A horizontal pipe contains water at a pressure of 150 {rm kPa} flowing with a speed of 1.30 {rm m/s}. The pipe narrows to one-half its original diameter. What is the speed of the water.
Write down the expression that shows the pressure
We have a typical student microscope with a rotating platform that allows the user to select from three objective lenses. calculate the highest and lowest magnitude of the overall angular magnifications available
A 460-Hz tuning fork causes resonance in the tube depicted in the figure below when the length L of the air column above the water is 18.3 and 55.8 cm, Find the speed of sound in air
An artillery shell is fired with a minimal velocity of 470m/s at 50o above the horizontal. To clear an avalanche, it explodes on a mountain side 38 s after firing.
The accompanying pressure-volume graph shows an engine cycle with one isothermal process, B-C. What is the net work done by the gas during one cycle
A sinusoidal wave traveling in the positive x-direction has an amplitude of 15cm, a wavelength of 40cm, Write down the wave function for a left traveling wave with the same parameters
How would you determine the density of an irregularly shaped rock, Is buoyant force a conservative force
An airplane moves 140 m/s as it travels around the vertical circular loop which has a 1 km radius. What is the magnitude of the resultant force on the 70 kg pilot of this plane at the bottom of this loop.
She pumps the handle up and down, slowly lifting the car. What is the force exerted on the small piston during each downward stroke?
A system of 1219 particles, each of which is either an electron or a proton, has a net charge of -6.640×10-17 C. How many protons are in this system (exactly)
You are given a container with 5.0g of hydrogen atoms. What is the total charge on the electrons in the container? What is the total charge on the protons
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