The correct option is B.
All objects emit electromagnetic radiation and the amount of radiation emitted at each wavelength depend on the temperature of the object. This observation is described by Wien's law, which states that the black body radiation curve for different temperatures peaks at a wavelength that is inversely proportional to the temperature.
Answer:
v = 45.37 m/s
Explanation:
Given,
angle of inclination = 8.0°
Vertical height, H = 105 m
Initial K.E. = 0 J
Initial P.E. = m g H
Final PE = 0 J
Final KE = 
Using Conservation of energy




v = 45.37 m/s
Hence, speed of the skier at the bottom is equal to v = 45.37 m/s
The phenomenon of "weightlessness" occurs when there is no force of support on your body. When your body is effectively in "free fall", accelerating downward at the acceleration of gravity, then you are not being supported.
Answer: B) 30 km/h
Explanation:
The speed of Ben and Jerry on their way to the store is given by

where
d is the distance they covered
t is the time they took
From the graph, we see that Ben and Jerry travelled for a distance of d=60 km in a time of t=2 h, so their speed is
