Answer:
14, 85 J
Explanation:
The formula of potential Energy (P.E.) is
P.E. = m * g * h, where m is the mass in kilograms, g is the acceleration due to gravity (about 10 m / at the surface of the earth) and h is the height in meters.
Here P.E. is 0,55 kg * 10 m/s * 2,7 m = 14, 85 J
Answer:
1,056
Explanation:
mean tensile strengths is the sum of all the tensile strengths given divided by the number of tensile strengths given
Given tensile strength are 1037,1047,1066,1048,1059,1066,1073,1070,1040
mean tensile strengths = (1037 + 1047 + 1066 + 1048 + 1059 + 1066 + 1073 + 1070 + 1040)/9
= 9506/9
= 1,056.22
≈ 1,056
The amount of energy transferred is 4320 J
Explanation:
Power is defined as the amount of energy transferred per unit of time:
where
P is the power
E is the amount of energy transferred
t is the time
In this problem, we have:
P = 720 W is the power
t = 6 s is the time elapsed
Solving for E, we find the energy transferred needed to push the box:
Learn more about power:
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B!
This is because gravitational pull energy needs a height. The higher the height the higher the energy.
Answer:
yes
Explanation:
when we throw a ball upwards, it will eventually come back to us because of force.