<h3>
Answer:</h3>
117.6 Joules
<h3>
Explanation:</h3>
<u>We are given;</u>
- Force of the dog is 24 N
- Distance upward is 4.9 m
We are required to calculate the work done
- Work done is the product of force and distance
- That is; Work done = Force × distance
- It is measured in Joules.
In this case;
Force applied is equivalent to the weight of the dog.
Work done = 24 N × 4.9 m
= 117.6 Joules
Hence, the work done in lifting the dog is 117.6 Joules
The correct answer is - a. was a sign of danger.
Once the people saw that the ocean waters are receding and were living vast space without water behind them, they knew that something big and very dangerous will happen. And in fact it did. The water that was sucked in in the place were there was a crack on the ocean floor, got shot back under big pressure and it had very big speed, as well as having waves that were destroying anything on their way.
Answer:
2.52 ml/s
Explanation:
Unit conversions:
1 mm = 0.001m
70 cm = 0.7 m
Let g = 10m/s2. If the pistol is fired horizontally at first, it did not have an vertical velocity, only horizontal velocity. So g is the only thing that affects the vertical motion of water.
We can calculate the time it takes for the squirts to hit the ground in the following equation of motion:
where h = 0.7 m is the vertical distance, and t is the time it takes, which is what we are solving for:
So the squirts takes 0.374s to hit the ground, and within that time it travels a distance of 1.m horizontally. Neglect air resistance, we can calculate the horizontal velocity:
where s = 1.2 m is the horizontal distance
The cross-section area of the hole is
where r = d/2 = 0.001/2 = 0.0005 m is the radius of the hole
So we can calculate the volume flow rate:
or 2.52 ml/s
The answer of this question is
A.kg
Temperature is measure of hotness and coldness of of a matter but, thermal energy is can refer to several distinct thermodynanics quantities such as the internal energy of system heat or sensible heat wich are defined as types of transfer heat.