Hi there! The anser is C. cells
Cells are the basic structural unit of all the organisms (including humans).
Newton's second law tells you:
Sum of forces on an object = ma
Here, the forces acting on the bundle are the tension in the string and the force of gravity, these two must combine to yield the acceleration of the bundle.
So we have:
T-mg = ma
or T=m(g+a)
We know m=8.7kg, we need to find a from the information
starting from rest, an accelerating object covers distance according to:
<span>dist = 1/2 at^2 </span>
to cover 1m in 1.8s, we have:
a=2d/t^2 = 2x1/1.8^2 = 0.62 m/s/s
Thus, the tension in the string is:
<span>T = m(g+a)
= 8.7</span>kg(9.8m/s/s+0.62m/s/s)
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<span>T = 90.654 N
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Answer:
The value of the acceleration of gravity of the Unknown Planet = 1.14
Explanation:
length of the pendulum (L)= 1.15 m
Time period (T)= 6.29 seconds
We know that time period of a simple pendulum is given by
⇒ T = 2 ×
put the values in the above formula we get
⇒ T = 2 ×
⇒ 6.29 = 2 ×
By solving the above equation we get
⇒ g = 1.14
This is the value of the acceleration of gravity of the Unknown Planet.
<span>when air cools , the temperatures drops, the molecules move slowly taking up less space , the amount of space the air takes ups shrinks , or reduce the air pressure
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Answer:
The amplitude ( ) of a wave is the distance from the centre line (or the still position) to the top of a crest or to the bottom of a trough . Be careful with this quantity - the centre line is not always given in a diagram.
Explanation: