<span>the moon is a satellite of the earth, and the earth is a satellite of the sun.
that is the best answer</span>
Answer:
0 ?
assuming the forces are equal they'll cancel each other out
Answer:
17.2s
Explanation:
We are given that
Mass of Georgie's brother=28kg
Mass of sled=9.1Kg
Total mass pulled by Georgie=28+9.1=37.1 Kg
Force applied =F=23N
Displacement=s=
Work done=
By using the formula
Energy expended by Georgie=
Power=150 W
We know that
Power=
By using the formula
Time=
Hence, the time for which glow to produce the 2576J =17.2s
The tension in the cable that pulls the elevator upwards with an acceleration of 2.0 m/s² is 4200 N. The right option is A) 4200 N.
<h3 /><h3>What is tension?</h3>
Tension is defined as the force transmitted through a rope, string or wire when pulled by forces acting from opposite sides.
To calculate the tension in the cable, we use the formula below.
Formula:
- T = mg+ma............ Equation 1
Where:
- T = Tension in the cable
- m = Mass of the Joey and the elevator
- a = Acceleration
- g = Acceleration due to gravity
From the question,
Given:
- m = (300+60) = 360 kg
- a = 2 m/s²
- g = 9.8 m/s²
Substitute these values into equation 2
- T = (360×9.8)+(360×2)
- T = 3528+720
- T = 4248 N
- T ≈ 4200 to the nearest hundred.
Hence, the tension in the rope is 4200 N, the right option is A) 4200 N.
Learn more about tension here: brainly.com/question/24994188
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Answer:
Change in heat energy = -30 J
Explanation:
Given:
AU = Q-W
Heat energy Q = 20 J
Work done W = 50 J
Find:
Change in heat energy
Computation:
Change in heat energy = 20 J - 50 J
Change in heat energy = -30 J