<h3><u>Answer;</u></h3>
- Almost all of the energy on Earth comes from the Sun.
- The energy in fossil fuels originally came from the Sun.
- Plants convert the energy of sunlight into chemical energy.
<h3><u>Explanation</u>;</h3>
- <u>Many different forms of energy are used here on surface of the earth, but almost all of them originate from the sun, not just light and heat (thermal) energy.</u>
- <u>Plants convert light energy from the sun into chemical energy (food) by the process of photosynthesis.</u> Animals eat plants and use that same chemical energy for all their activities
- Heat energy from the sun causes changing weather patterns that produce wind. Wind turbines then convert wind power into electrical energy.All these conversions to different forms obeys the law of conservation of energy.
- <em><u>Fossil fuels are energy sources that were created over very long periods of time from decayed and fossilized living matter, and energy in these living organisms originally came from the sun.</u></em>
Answer:
Gravity Increases - Mass increases, distance decreases
Gravity Decreaes - Mass decreases, distance increases
Answer:
Explanation:
The De Broglie's wavelength of an object is given by:
where
h is the Planck constant
m is the mass of the object
v is the speed of the object
In this problem, we have:
is the mass of the pellet
is the speed of the pellet
Substituting into the equation, we find the wavelength of the pellet:
Wavelength = 20 m = 0.20 m
frequency = 3*10^8 / 0.20 = 1.5 * 10^9 Hertz
Formula for Electric Field strength , E = V/d
where V = Voltage in volts, and d = distance of separation in meters.
d = 0.5 cm = 0.005 m, V = 12 V
E = V/d = 12 / 0.005
E = 2400
Electric Field Strength = 2400 Volts/meter