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Is there a saturation point when the intensity of light no longer stimulates photosynthesis? If so, what was it and under what circumstances?
For the house in Question 3, calculate the infiltration heat losses in Btu/h when ?T = 40°F. What percentage of the heat loss is because of infiltration
In addition to the line, lambda = 2537 angstroms, the mercury spectrum has a strong line at lamda = 1849 angstroms. In an experiment, at what voltage would one expect a current drop associated with the second line?
A sample of isotope of 131 Iodine (half-life of 8.04 days) has activity of 5.8 mCi at the time of shipment. How much time has elapsed between the two measurements
An 24 g rifle bullet traveling 370 m/s buries itself in a 4.8 kg pendulum hanging on a 2.6 m long string, which makes the pendulum swing upward in an arc. find the maximum vertical displacement of the pendulum.
A metal bar, pivoted at one end, oscillates freely in the absence of a magnetic field. But, when it oscillates between the poles of a magnet, its oscillations are quickly damped. Why? (Such magnetic damping is used in a number of practical devices..
A low speed wind tunnel has an inlet cross sectional area of 2m2 and a test cross sectional area of 0.5m2. What is the inlet velocity
A parallel-plate capacitor is made of two flat metal plates pressed against a thin slab of dielectric material. The capacitor is connected to a power supply, and a potential difference of 80 V is applied to the plates. With the power supply discon..
A lens that has a focal length of 8.90 cm is used as a magnifying glass. (a) To obtain maximum magnification and an image that can be seen clearly by a normal eye, where should the object be placed? (b) What is the magnification?
During simple harmonic motion, is there a time at which the position, velocity, and acceleration all have the same sign (+,-, or 0)? Explain?
Estimate the maximum efficiency of an ideal (i.e, Carnot) heat engine using a body temperature of 37 degrees Celcius as the high temperature heat source and an ambient temperature of 15 degrees celcius as the low temperature heat sink.
The corroded contacts in a lightbulb socket have 8.3Ω total resistance. How much actual power is dissipated by a 110 W (120 V) lightbulb screwed into this socket? Express your answer using two significant figures.
A satellite of mass 310 kg is launched from a site on the Equator into a circular orbit at 8000 km above Earth's surface. DATA: Rearth=6.38×106 m. a) What is the acceleration of gravity at this altitude? b) What is the speed of the satellite? c) What..
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