Answer:
The first law of thermodynamics. In brief, energy can neither be created nor destroyed. However, energy may be converted from one form to another.
Explanation:
A basic electrical solar fan comes in two parts: a solar panel connected to an electrical motor. The solar panel converts solar energy to electricity; the electrical motor converts electricity to mechanical energy, which causes the blades to turn.
This energy conversion is possible because of the first law of thermodynamics. This law states that the total energy of the universe is constant. Energy can neither be created nor destroyed. However, energy may be converted from one form to another.
For example, the solar panel does not destroy the solar energy; it simply converts that energy to electrical energy. Note that a fraction of that energy absorbed was lost as thermal energy. Similarly, the motor merely converts electrical energy to mechanical energy. It might also lose some thermal energy as it heats up.
The distance between two objects is doubled, the force between them drops to a quarter (1/22<span> or 1/4). If the distance is increased ten times, the force between the two objects decreases to a hundredth of what it was (1/10</span>2<span> or 1/100).</span>
Answer:
= = 140 m / s
Explanation:
This is a projectile launch, in this case the components of the initial velocity are seen
Since there is no rice in the X axis, so the velocity is vx, it must be constant, at all times
= = 140 m / s
The vertical component of velocity changes due to having applied the gravity fiate
= - g t
Answer:
7808 m/s
Explanation:
Find NE velocity after 60 s of acceleration in that direction:
= a t = 28.4 m/s^2 * 60 s = 1704 m/s
Vertical component = 1704 sin 45 = 1204.9 m/s
Horiz component = 1704 cos 45 = 1204.9 m/s
Add the two vertical components
6510 + 1204.9 = 7714.9 m/s = vertical velocity
Pythagorean theorem to find resultant of vertical and horiz v's
Vf ^2 = 1204.9^2 + 7714.9^2 0
Vf = 7808. m/s