You just said that the EMF across the circuit is 7V. So the voltage is 7 volts.
Answer:
x = 50 N
Explanation:
Given that we have a net force, a mass, and acceleration, we can use the fundamental formula for force found in newton's second law which is F = m × a.
Given a mass of 150 kg, and an acceleration 3.0m/s². We can substitute these two values in our formula to calculate the magnitude of these forces or it's net force to identify the unknown force acting on our known force for this situation to work.
_______
F (Net force) = F2 (Second force which we are given) - F1 (First force) = m × a
m (mass which we are given) = 150 kg
a (acceleration which we are given) = 3.0m/s
________
So F = m × a → F2 - F1 = m × a →
500 - F1 = 150 × 3.0 → 500 - F1 = 450 →
-F1 = -50 → F1 = 50
Answer:
The answer is 80 m/s
Explanation:
You divide 240 by 3 since your force is 240N, then 3 is your mass, so divide and get 80
The negative work done states that the work is done by the object and not on the object.
<u>Explanation:
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According to work energy theorem, the work done is equal to change in kinetic energy exhibited by the body. As the mass of the object is constant, and the velocity is decreased from 10 m/s to 4 m/s, the work done will be
Here W is the work done, m is the mass and v is the final and u is the initial velocity of the object. As the initial velocity is greater than the final velocity. So
So the work done is negative for the given situation. The negative work done states that the work is done by the object and not on the object.
In uniform motion, the path is a straight line, and the object r moving along it at a constant speed.