Answer:
4565 meters
Explanation:
W = V²/R
25 = (25)²/R
R = 25 ohm
R = (pl)/A


l = 4565 meters approximately
Answer:
1. supernova
2. bubble
3. atomic hydrogen cloud
4. molecular cloud
Explanation:
Supernova involves the bright explosion of a star when this happens it returns gas and new elements in to space. The expelled hot gas from the explosion forms a bubble and starts expanding in size. As this bubble cools, it merges merges with other interstellar gas to form an atomic hydrogen cloud. The atomic hydrogen cloud cools further to form a molecular cloud where another star formation begins to occur.
Answer:
The time taken by the object to reach the ground is 0.58 seconds.
Explanation:
Given that,
An object was released from rest at height of 1.65 m with respect to ground. We need to find the time taken by the object to reach the ground. Initial speed of the object is 0 as it is at rest. It will move downward under the action of gravity such that, the distance covered by the object is given by :




t = 0.58 seconds
So, the time taken by the object to reach the ground is 0.58 seconds. Hence, this is the required solution.
Answer:

Explanation:
Given:
- mass of car,

- distance of skidding after the application of brakes,

- coefficient of kinetic friction,

<u>So, the energy dissipated during the skidding of car:</u>
<em>Frictional force:</em>

where N = normal reaction by ground on the car


<em>Now from the work-energy equivalence:</em>


is the dissipated energy.