Physics, 20.01.2020 16:31 ccdarling7185
The energy of microwaves is less than the energy of ultraviolet light. which comparison of the energies of electromagnetic waves is correct?
x-rays have lower energy than gamma rays because x-rays have higher frequencies.
x-rays have lower energy than gamma rays because x-rays have shorter wavelengths.
visible light has higher energy than infrared light because visible light has longer wavelengths.
visible light has higher energy than infrared light because visible light has higher frequencies.
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The base of a 50-meter tower is at the origin; the base of a 50-meter tree is at (0, 50, 0). the ground is flat and the z-axis points upward. the following parametric equations describe the motion of six projectiles each launched at time t = 0 in seconds. (i) r (t) = (50 + t2)k (ii) r (t) = 2t2 j + 2t2k (iii) r (t) = 50 i + 50 j + (50 − t2)k (iv) r (t) = 2t j + (50 − t2)k (v) r (t) = (50 − 2t) i + 2t j + (50 − t)k (vi) r (t) = t i + t j + tk (a) which projectile is launched from the top of the tower and goes downward? at time t = , the projectile hits the ground at point (x, y, z) = . (b) which projectile hits the top of the tree?
Answers: 2
The energy of microwaves is less than the energy of ultraviolet light. which comparison of the energ...
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