Explanation:
Eg = mgh
a. Eg = (2.00 kg) (9.8 m/s²) (12.0 m)
Eg = 235 J
b. Eg = (2.00 kg) (9.8 m/s²) (3.00 m)
Eg = 58.8 J
c. Eg = (2.00 kg) (9.8 m/s²) (4.50 m)
Eg = 88.2 J
d. When the coconut hits the bystander:
Ek = 235 J − 58.8 J = 176 J
When the coconut hits the ground:
Ek = 88.2 J − 0 J = 88.2 J
Ek is the greatest when the coconut hits the bystander.
Answer:
a. You should use the thin cooking twine.
Explanation:
The velocity of wave on a rope is:
(1)
with T the tension and μ the linear density of the rope that is defined as , so (1) is:
with M the mass and L the length
Note that if L and T remain constant for bigger M velocity is going to be smaller and vice versa. So, we should chose the lighter rope that is the thin cooking twine to have the fastest wave speed.
The Moon s escape speed will be smaller than Earth's.
The minimum speed that is required for an object to free itself from the gravitational force exerted by a massive object.
The formula of escape speed is
where
v is escape velocity
G is universal gravitational constant
M is mass of the body to be escaped from
r is distance from the center of the mass
we can say that,
Escape speed depends on the gravity of the object trying to hold the spacecraft from escaping.
we know that,
The Moon's surface gravity is about 1/6th as powerful or about 1.6 meters per second per second.
since, v ∝ g
The Moon s escape speed will be smaller than Earth's.
Learn more about escape speed here:
<u>brainly.com/question/15318861</u>
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I don't see any answers, but I do know that machines help for example: make chocolate bars. people do not have to cut the bars or another example: salt or season chips. or washing laundry. or electric cutters help so we do not have to do it by hand or with a knife.
Does this Help?