Answer: Lily, Astrid, Henry, and Bob
Explanation:
By a small online search i've found the image related to this question, and you can see it below.
Joules is a unit of energy, such that:
Joule = kg*m^2/s^2
In other hand, Watt is a unit of power, such that:
1 W = 1 J/s
Then if we measure power, we are measuring watts, which is equivalent to measuring the total amount of energy in joules in a given period of time, and then dividing that by the time. And if we measure energy, we are directly measuring joules.
Then if we measure power or energy, at some point our measures will be in joules (unless we have an specific device to measure power, but these usually exist for electronic systems, not for mechanical/dinamic systems like the ones in the image), this means that all of them will record their measurements in joules, so the correct option is Lily, Astrid, Henry, and Bob
Answer:
The voltage induced in the coil is 1.25 V.
Explanation:
Given;
number of turns, N = 100 turns
cross sectional area of the copper coil, A = 0.1 m²
initial magnetic field, B₁ = 0.5 T
final magnetic field, B₂ = 1.00 T
duration of change in magnetic field, dt = 4 s
The induced emf in the coil is calculated as;

Therefore, the voltage induced in the coil is 1.25 V.
Given
Force=200N
Mass=5.5kg
F=ma
a=F/m=200/5.5=38.18metre per second
A- plane mirror because its surface is plane
It is 800 N FN = 600N + 200 N = 800 N Answer to your question: The net force is all Newton's second law. It is the force that acts on a body or a particle. for example: It is the force we make when we push a car or something heavy that is in a straight line. .