What is the primary effect the carbon dioxide in Venus' atmosphere has on the planet
What will be an ideal response?
The high concentration of carbon dioxide has caused a runaway greenhouse effect which results in very high surface temperatures.
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Jennifer is inside her windowless space station laboratory and finds herself increasingly pulled to the floor. What experiment can she perform inside the lab to decide if she is feeling the effect of an acceleration or an effect of gravity?
What will be an ideal response?
Suzy shakes a rope tied to a wall and produces a standing wave of one loop. The distance between Suzy and the wall is
A) one-half a wavelength. B) a full wavelength. C) more than a full wavelength. D) none of the above
If two sounds are at slightly different frequencies, beats can be heard at a frequency equal to the difference in frequency of the two sources
Indicate whether the statement is true or false
In an x-ray tube, high-speed electrons are slammed into a lead target, giving off x-rays. If the electrons are accelerated from rest through a potential difference of 160 000 volts, what speed do they have when they strike the target? (qe = 1.6 × 10^?19 C, me = 9.11 × 10^?31 kg, and c = 3.00 × 10^8 m/s)
a. 0.79c b. 0.65c c. 0.83c d. 0.49c e. 0.48c