I believe answer the only correct answer is A. Only from thinking of how gravity works with the natural world around us. Plus answer d doesnt makes sense, and c is false. And lastly if you throw a bowling ball and soccer ball over a bridge at the same time, they will fall at the same rate, only thing that would delay them is if one had more air resistance than the other.
Answer:
Person’s mass M = 83.67 kg (Approx.)
Explanation:
Given:
Gravitational potential energy = 164,000 J
Height = 200 m
Find:
Person’s mass M
Computation:
Gravitational acceleration g = 9.8 m/s²
Gravitational potential energy = mgh
164,000 = (m)(9.8)(200)
Person’s mass M = 83.67 kg (Approx.)
Answer: 0.6N
Explanation:
To calculate the magnitude of the force experienced by the conductor, we use the formulae
F= BILsintheta
Where B is the magnetic field
I is the current
L is the length
theta is the angle that the conductor made with the magnetic field
Substituting the given parameters into the formulae,
F = (0.6 × 2.5 × 0.8)sin30°
F= 0.6N
Today: fusion<span> power. </span>Fusion energy<span>, simply, is the exact opposite of fission </span>energy<span>, which comes from splitting an atom and is widely </span>used<span> to power </span>nuclear<span> plants and weapons. </span>Fusion<span> occurs constantly on our sun, which produces most of its </span>energy <span>via the </span>nuclear fusion<span> of hydrogen into helium.
Hope this helps! =)</span>
