Answers: 3
Physics, 22.06.2019 04:50
Unpolarized light whose intensity is 1.19 w/ is incident on a polarizer. (a) what is the intensity of the light leaving the polarizer? (b) if the analyzer is set at an angle of = 41.0â with respect to the polarizer, what is the intensity of the light that reaches the photocell?
Answers: 1
Physics, 22.06.2019 05:30
FĂsica: un futbolista patea hacia el arco con una velocidad de 15m/ah, calcular: a)el alcance para un ĂĄngulo de tiro de 25? , b) el tiempo que el balĂłn permanece en el aire.
Answers: 3
Physics, 22.06.2019 11:20
The ultracentrifuge is an important tool for separating and analyzing proteins. because of the enormous centripetal accelerations, the centrifuge must be carefully balanced, with each sample matched by a sample of identical mass on the opposite side. any difference in the masses of opposing samples creates a net force on the shaft of the rotor, potentially leading to a catastrophic failure of the apparatus. suppose a scientist makes a slight error in sample preparation and one sample has a mass 10 mg larger than the opposing sample. if the samples are 12 cm from the axis of the rotor and the ultracentrifuge spins at 70,000 rpm, what is the magnitude of the net force on the rotor due to the unbalanced samples? ( be thorough on your answer)
Answers: 3
Physics, 22.06.2019 15:50
An object with initial temperature 130 â f is submerged in large tank of water whose temperature is 50 â f . find a formula for f ( t ) , the temperature of the object after t minutes, if the cooling constant is k = â 0.2 . remember newton's law of cooling (the rate of change of temperature with respect to time is equal to k times the difference between the temperature of the object and the surrounding temperature) ! : )
Answers: 1
A jogger runs by a river with a velocity of 7 m s relative to the ground. A leaf floating on the riv...
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