Answer:
The electromagnetic waves reach Earth, while the mechanical waves do not.
Explanation:
Sun's radiation that reaches the Earth belongs to the Infra red, Visible and the Ultraviolet range of frequencies of the electromagnetic spectrum. Sun's rays travel through vacuum before entering the earth's atmosphere.
These rays can travel through vacuum. The speed with which electromagnetic waves travel is the same as the speed of light .
The mechanical waves are the longitudinal and the transverse waves. They require a medium to travel. In the absence of a material medium they cannot travel. Material media are like air, water, oil, glass etc.
That's why even though both mechanical and electromagnetic waves are generated by the Sun, it is the electromagnetic waves that reach the earth.
Answer:
.35 s
Explanation:
x = v(i)t + 1/2at^2
gravity = 9.81 m/s^2 = a
.6 m = 1/2at^2
(.6 m) * 2 = (1/2at^2)*2
1.2 m = at^2
(1.2 m)/a = (at^2)/a
0.12 s^2 = t^2
sqrt(.12 s^2) = sqrt(t^2)
.35 s = t
56.4
111
77.6
0.018
80.4
774.2
The net force acting on the water skier, calculated using Newton's second law (F=ma), is approximately 111 Newtons.
The net force acting on the water skier can be calculated using Newton's second law, which states that force equals mass times acceleration (F=ma). In this instance, the skier's mass (m) is 79.0 kg and his acceleration (a) is 1.40 m/s2.
By multiplying these values together (F = 79.0 kg * 1.40 m/s2), we find that the net force acting on him is 110.6 Newtons (N). However, this exact value is not listed in the answer choices. Among the given choices, 111 N would be the closest approximation to the calculated value.
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The temperature of a balloon is lowered with liquid nitrogen. The balloon appears to deflate because the gas in the balloon lost energy and condensed. The answer is letter D.
The ozone layer absorbs most of the incoming ultraviolet rays radiation from the sun. The ozone layer is found at the second layer of the atmosphere, stratosphere.