Answer:
40watts
Explanation:
Given parameters:
Work done = 3000J
Time = 75s
Unknown:
Power generated = ?
Solution:
Power is the rate at which work is done;
Power =
Now, insert the parameters and solve;
Power = = 40watts
<span>They do not have a backbone.They are multi-cellular. They have no cell walls, like all other animals.<span>They reproduce by two reproductive cells, or gametes, coming together to produce a new organism of their species.</span></span>
<span>Scientists have obtained most of this information from natural geological activity.
</span>S-waves and p-waves are seismic waves- the waves of energy that travel through the Earth as a result of an earthquake .Both P- and S-waves travel easily through solids, but S-waves cannot pass through liquids, and they cannot pass through the outer core. Scientists know that Earth’s outer core is liquid because s-waves are not able to pass through it.<span> When an earthquake occurs there is a “shadow zone” on the opposite side of the earth where no s-waves arrive.
</span>So, one of the reasons <span>why scientists believe the outer core is liquid is the s-wave shadow zone.</span>
Answer:
1. B- kinetic to gravitational potential energy
2. A-gravitational to kinetic energy
Explanation:
When the train goes up the hill, the kinetic energy decreases (the speed decreased) due to the pull of gravity.
When the train goes down the hill, the speed increases (kinetic energy increases) and since the object is coming downwards the gravitational potential energy decreases