The correct answer that would complete the given statement above would be option B. UNIT (of measurement). <span>A standard quantity of a physical property used as a factor to compare other occurring quantities of that property is called a unit of measurement. Hope this answers your question. </span>
Answer:
280 N
Explanation:
acceleration = v2-v1 / time taken = (2-4 )/ 0.05 = -40 m/s^2 ( neg sign indicates slowing down )
force exerted = ma = 7 kg x -40 m/s^2 = - 280 N ( neg sign means opposite direction of initial velocity )
since the 7 kg ball is slowing down, the direction of force will be opposite of the initial velocity , and it will be 280 N
<span>increasing the number of coils in the armature
</span>
<span />
Answer:
294 W
Explanation:
Electrical power: This can be defined as the rate at which electrical energy is used or dissipated. The S.I unit of electrical power is Watt(W).
The expression of electrical power is given as,
P = I²R................... Equation 1
Where P = power, I = current, R = Resistance.
Given: I = 7 A, R = 6 Ω
Substitute into equation 1
P = (7)²(6)
P = 294 W.
Hence the power power absorbed by the resistor is 294 W
