Your power is 1200 watts ⇒ answer D
Explanation:
Power is the rate of change of the work done
→ Power = Work done ÷ time
→ Work = Force × distance
→ Power = (Force × distance) ÷ time
It takes 600 N of force to move a stalled truck 30 meters and you
do it in 15 seconds
→ Force = 600 N
→ Distance = 30 meters
→ Time = 15 seconds
Substitute these values in the rule above
→ Power = (600 × 30) ÷ 15
→ Power = 18000 ÷ 15
→ Power = 1200 watts
Your power is 1200 watts
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Swimming, because during swimming we use more muscles than when we sprint, stretch, etc..
Answer:
The new planet has more gravity
Explanation:
gravity force = G m1 m2 / r^2
decresing r or increasing the planet mass will increase the force
Answer:
The electric potential is 
Explanation:
From the question we are told that
The length of the rod is 
The total charge of the rod is 
The length from the center is 
The diagram illustrating the setup for this question is shown on the first uploaded image
From the diagram the potential at point A
is mathematically represented as

Where K is the coulomb constant with a value 
where q is the charge in charge the rod relative to its distance from A is mathematically represented as

This a small unit length of the rod
So 
=> ![V = k\frac{q}{L} ln [\frac{4}{2} ]](https://tex.z-dn.net/?f=V%20%3D%20%20k%5Cfrac%7Bq%7D%7BL%7D%20%20ln%20%5B%5Cfrac%7B4%7D%7B2%7D%20%5D)

Substituting values


Answer:
The angular speed of the wheel is 0.452 rad/s
Explanation:
The angle through which the car wheel turns, Δθ = 277° = 277/360 × 2·π radian
The time it takes for the car wheel to turn, Δt = 10.7 s
The angular speed, ω is given by the following equation;

Substituting the known values for Δθ and Δt gives;

The angular speed of the wheel = 0.452 rad/s