How far apart should two protons be if the electrical force of repulsion is equal to the weight (attraction to the Earth) of one of the protons?
What will be an ideal response?
12. cm
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As a block slides down a frictionless incline, which of the following statements is true?
a. Both its speed and acceleration increase. b. Its speed increases and its acceleration remains constant. c. Its speed and acceleration remain constant. d. Its speed increases and its acceleration decreases. Both its speed and acceleration decrease.
Venus' surface temperature cools off at night, much like Mercury's does
Indicate whether the statement is true or false
A wind of velocity 10 m/s is blowing through a wind generator with blade radius 5.00 meters. What is the maximum power output if 30.0% of the wind's energy can be extracted? ?air = 1.25 kg/m3
a. 7.20 kW b. 14.7 kW c. 21.3 kW d. 29.4 kW e. 39.6 kW
Light of wavelength 525 nm passes through two slits separated by 0.500 mm and produces an interference pattern on a screen 7.80 m away
The intensity at the central maximum is I0. What is the distance on the screen from the center of this central maximum to the point where the intensity due to double-slit interference has fallen to 1/2 I0? What will be an ideal response?