Look carefully at the diagrams of each wave.
2 answers:
Answer : Wave B.
Explanation :
Given that, the waves A, B, C, and D each represent a different wave of the electromagnetic spectrum.
The energy of a wave is given by :
Where,
h is the Planck constant
c is the speed of the light
is the wavelength of light.
The wavelength of a wave is defined as the distance between two consecutive crests or troughs.
The energy of the wave is inversely proportional to its wavelength.
So, the wave that is energetic enough to damage living human cells is wave B because its wavelength is small as compared to other waves.
<em>Hence, the correct option is (B) " Wave B because it has the shortest wavelength, and therefore carries the most energy ". </em>
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Answer:
Explanation:
Two identical bodies are sliding toward each other on a frictionless surface.
Initial speed of body 1, m₁ = 1 m/s
Initial speed of body 2, m₂ = 2 m/s
They collide and stick.
We need to find the speed of the combined mass. Let V is the speed of the combined mass.
Using the conservation of momentum.
We have, m₁ = m₂ = m
So, the speed of the combined mass is .
Answer:
Explanation:
From the question we are told that:
Initial Speed
Time
Angle
Generally the Newton's equation for motion is mathematically given by