Answer:
7,546 J
Explanation:
recall that Potential energy is given by
P.E = mgΔh
where m = 70kg (given)
g = 9.8 m/s² (acceleration due to gravity)
Δh = change in height
= distance from top of building to top of car
= height of building - height of car
= (5+8) - 2
= 11m
substituting all these into the equation:
P.E = mgΔh
= 70 x 9.8 x 11
= 7,546 J
Answer:
The work done by the force is 6μJ
Explanation:
Suppose, A 30 nC charge is moved from a point where V₁ = 130 V to a point where V₂ = -70 V.
We need to calculate the work done by the force
Using formula of work done
Where, q = charge
=potential difference
Put the value into the formula
Hence, The work done by the force is 6μJ.
Answer:
23.5
Explanation:
Dunno how 2 explain but this is correct 4 sureeeeee.
1. Answer: 7.75 seconds
Explanation: 76-14=62 metres
62/8=7.75 seconds
2. Answer: 2.5 seconds
Explanation: 28-18=10 metres
10/4=2.5 seconds
The blades must be angled to be able to create the lift, and the blades need an engine powerful enough to spin the blades fast enough to create adequite lift. This remindes me of Newton's third law! For every action, there is an oposite reaction
