Answer:
Explanation:
We shall apply law of conservation of momentum .
total Initial momentum =
7.5 x 8.85 = 66.375 kg m / s
total mass = 7.5 + 61.5 = 69 kg , common velocity of ball and performer be v
Total momentum = 69 v
69 v = 66.375
v = 66.375 / 69
= .962 m /s .
The correct answer for is A) ultraviolet Light
The correct answer for the second question is C) Infrared waves
The correct answer for the third question is solved this way
Peak wavelength= 0.0029/T =0.0029/30000 =B) 97nm
Hope this helps let me know. I tried my best.
The correct answer is gamma
Gamma rays are the most penetrating ones and as much as a meter of concrete is needed to stop them, so a few centimeters is nothing.
Is their a picture or something?
Answer:
= 746.58N
Explanation:
where,
"m" is the mass of the body
"v" is the linear velocity of the body
"R" is the radius of the circular path.
Mass of the pilot is m = 150 lbs = 68.0389kg
Speed of the pilot is v = 120 ft/s. = 36.576m/s
The radius of the loop is R = 400 ft = 121.92m
F = mv²/R
= (68.0389 × (36.576²)) / 121.92
= 746.58N
