Answer:
Air resistance
Answer B is correct
Explanation:
The friction that occurs when air pushes against a moving object causing it to negatively accelerate is called as air resistance.
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Answer:
force exert horizontally is 1 N
Explanation:
given data
bar length = 3.7 m
mass = 4.5 kg
rope length = 6.7 m
to find out
force exert horizontally
solution
we know here bar length and rope length that make angle θ
so here cos θ = (3.7/6.7)
so equating the torque here to find force in horizontal direction is
Fx = T cos θ .........1
and in vertical direction
Tsinθ + N = mg .............2
so here
we consider equilibrium condition
so
Fx = 0
T cos θ = 0
T 3.7 / 6.7 = 0
T = 6.7/3.7
T = 1.81
so from equation 1
Fx = T cosθ
Fx = 1.81 ( 3.7/6.7)
Fx = 1 N
so force exert horizontally is 1 N
That is a vector. It is a combination of direction and velocity. (You can think of Vector from Despicable Me to help you remember the term)
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100 MHz = 100,000,000 Hz = 10^8<span> Hz
And using basic conversions between frequencies, I've determined that the wavelength is roughly 3 meters.</span>