Answer:
Explanation:
The candela (symbol: cd) is the SI base unit of luminous intensity, which is defined as the power emitted by a light source in a certain direction, weighted by the luminosity function. A standard candle produces light with a luminous intensity of around 1 cd.
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Cellulat telephone operate with radio waves, a form of Electromagnetic waves
Answer:
7.6*10^4J
Explanation:
Given that m=95kg
Final velocity= 40m/s
Using W=0.5 m (square of (final velocity) - square of (initial velocity))
= 0.5 * 95 * Squared of (40)
= 7.6*10^4J
Force = (mass) x (acceleration)
Force = (18 kg) x (3 m/s²) = 54 newtons
As long as you continue pushing the cart with 54 newtons of force,
it will accelerate at 3 m/s².
At the instant you release it, or keep your hands on it but stop pushing,
it will stop accelerating. It'll continue forward at the speed it had when
the 54 newtons of force stopped.
Answer:
0 J
Explanation:
From the diagram below; we would notice that the Force (F) = Tension (T)
Also the angle θ adjacent to the perpendicular line = 90 °
The Workdone W = F. d
W = Fd cos θ
W = Fd cos 90°
W = Fd (0)
W = 0 J
Hence the force is perpendicular to the direction of displacement and the net work done in a circular motion in one complete revolution is = 0