A boiling pot of water (the water travels in a current throughout the pot), a hot air balloon (hot air rises, making the balloon rise) , and cup of a steaming, hot liquid (hot air rises, creating steam) are all situations where convection occurs.
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Answer:
The intensity of the light after passing through the two polarizing filters is 4.00 units
Explanation:
Io = 25 + A
= 25 + 9
= 34
Intensity of light through first polarizer,
I1 = Io/2
= 34/2
= 17 units
angle between axis of frist and second polarizers, theta = 55 + 6
= 61 degrees
Intensity of light passing through second polarizer,
I2 = I1*cos^2(theta)
= 17*cos^2(61)
= 4.00 units
Distance-time graph is the plot of distance travelled by a body against
time. So it will tell us about the journey made by a body and its speed.
Below is an example of a distance-time graph, if it is a straight
horizontal line than the body is stationary, its speed is zero, if the
line is diagonal than its moving with a constant speed and if it is
anything other than a straight line then the speed is varying.
Answer:
Increasing the wavelength of a rope by 50 % decreases its frequency by 33 %. The new wavelength is 67 % of the original (33 % less than the original).
