Answer:
Considering borrowers race sex and national origin
Explanation:
Edge
Answer: a) speed = 3.45 × 10^-2 m/s
b) speed = 1.38 × 10^-1 m/s
Explanation: shown in the attachment
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Answer:
Correct answer: Ep₁ = 105.11 J
Explanation:
if we take as the zero reference point the bottom of the hole then the height difference is 11 m. Let named h₁ = 11 m
The formula for calculating potential energy is:
E p = m g h => mg · 9.0 m = 86 J => mg = 86/9
when we substitute this into the next formula we get
m g h₁ = 86/9 · 11 = 105.11 J
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Answer:
0.60 N, towards the centre of the circle
Explanation:
The tension in the string acts as centripetal force to keep the ball in uniform circular motion. So we can write:
(1)
where
T is the tension
m = 0.015 kg is the mass of the ball
is the angular speed
r = 0.50 m is the radius of the circle
We know that the period of the ball is T = 0.70 s, so we can find the angular speed:
And by substituting into (1), we find the tension in the string:
And in an uniform circular motion, the centripetal force always points towards the centre of the circle, so in this case the tension points towards the centre of the circle.
Explanation: