Answer:
15.03 m
Explanation:
Given:
mass of the block, m = 7.25 kg
Angle, Θ = 28.5°
Initial speed of the block, v₀ = 15 m/s
let the distance traveled by the block be 's'
Now, applying the work energy theorem,
we have

on substituting the values in the above equation, we get

or

or

s = 15.03 m
Hence, the block will travel 15.03 m up the ramp
Answer:
A continuous flow of negative charges (electrons) creates an electric current. The pathway taken by a electric current is a circuit.
Explanation:
Answer:
Speed, v = 5 m/s
Explanation:
We have,
The length of the football field, l = 100 m
A person takes 20 seconds to run its length.
It is required to find the speed of the person with which he should run. The distance covered divided by time taken is called its velocity.

So, the speed of the person is 5 m/s.
Opposition for the current flow
Explanation:
- Resistance is defined as the ability pf the conductor to oppose the flow of electrons through it. It is usually represented in Ohm.
- Resistance is an important parameter in a circuit design and it should be properly designed.
- Resistance of a conductor depends upon the material nature, length of the conductor and area of cross section.
- In conductor, Resistance is low. It is due to that charges flow through the conductor freely.