Answer:
T= 210.15 N
F= 75.31 N
Explanation:
Let the tension in string be T newton.
According to the question
⇒T×cos21°= mg
⇒T= mg/cos21°
⇒T=20×9.81/cos21
⇒T= 210.15 N
now, the magnitude of horizontal force
F= Tsin21°
⇒F= 210.15×sin21°
=75.31 N
Diagram A will result in the movement of the block to the left as a result of the forces.
<h3>What is Force?</h3>
This is referred to an influence which is capable of changing the motion of an object.
Diagram A has equal upward and downward force and left side which is 60N is higher than the right side which has 20N. The block will therefore move to the left.
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The force he must exert is 300 N
Answer:
Options (C) and (F).
Explanation:
Constant speed of an object is represented by the flat segment (a line parallel to the x-axis) on the graph of velocity and time.
In other words, flat segments represents no change in the velocity with respect to the time.
From the graph attached,
Being flat segments, C and F will represent the constant speed.
Therefore, Options (C) and (F) will be the correct options.
The electromagnetic spectrum is divided into seven different frequency ranges which are from lowest to highest, radio waves, microwaves, infrared, visible light, ultraviolet, X-rays and gamma rays.
The electromagnetic spectrum includes electromagnetic waves with frequencies between one hertz and above 10²⁵ hertz, or wavelengths between thousands of kilometres and a small portion of the size of an atomic nucleus. The electromagnetic waves found within each of these bands are referred to by a different name. Starting at the low frequency(long wavelength), end of the spectrum, these are radio waves, micro waves, infrared, visible light, ultraviolet, x-rays and gamma rays. This frequency range is divided into separate bands.
To know more about electromagnetic waves:
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