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garri49 [273]
3 years ago
14

Which statement is true? Hydroelectric power is generated from moving water. Oil, a renewable resource, is processed to make jet

fuel. Propane, a renewable resource, is used in some heating systems. Geothermal energy can be converted to electricity in solar cells.
Physics
2 answers:
grin007 [14]3 years ago
8 0

Answer:

A

Explanation:

i took the test

Mrac [35]3 years ago
6 0

Answer: hydroelectric power is generated from moving water

Explanation: hydroelectric power is generated from moving water

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Is orange juice in an orange potential energy or kinetic energy?
beks73 [17]
Potential energy. Kinetic energy is movment
5 0
3 years ago
Read 2 more answers
A satellite orbiting Earth at an orbital radius r has a velocity v. which represents the velocity if the satellite is moved to a
babunello [35]

Answer:

Option 2. √3 x V

Explanation:

Let the velocity of satellite orbiting Earth at r be V

Let the velocity of the satellite orbiting at 3r be V1

V (orbiting at r) = √(2gr)

V1 (orbiting at 3r) = √(2g3r)

Now let us find the ratio of V1(orbiting at 3r) to V(orbiting at r) .

This is illustrated below

V1 / V = √(2g3r)/√(2gr)

V1 / V = √3

Cross multiply to express in linear form

V1 = V x√3

V1 = √3 x V

From the above illustrations, we can see that the velocity of the satellite when it is moved to an orbital radius of 3r is: √3 x V

8 0
3 years ago
What word is used to describe knowledge about the universe and the method of obtaining that knowledge?
Mumz [18]
Astrophysics is a term used to describe knowledge about the universe. 
4 0
3 years ago
The resolution of a telescope is ultimately limited by the diameter of its objective lens or mirror. A typical amateur astronome
slava [35]

Answer:

 θ =  3.19  arc second

Explanation:

The resolution of a telescope is given by the rayleigh criterion, which establishes that two objects are separated if the principal maximum of diffraction of one of them coincides with the first minimum of diffraction of the second object, based on this the solution is given by the first diffraction minimum, the a slit is

        a sin θ = m λ

with m = 1

in the case of circular apertures the equation must be found in polar coordinates, therefore a numerical constant is introduced

        a sin θ = 1.22 λ

Angles are measured in radians and in these experiments they are small

        sin θ = θ

       θ= 1.22  λ  / a

in this case a = 6.09 in, the wavelength is wrong = 550 10⁻⁹ m which is the maximum resolution of the human eye

l

et's reduce the magnitudes to the SI system

        d = 6.09‘  2.54 10⁻-2 m / 1 inch = 15.4686 10-2 m

let's calculate

       θ = 1.22 550 10-9 / 15.468 10-2

       θ = 15.5 10⁻⁶ rad

       rad = 2.06 105 s

       θ = 15.5 10⁻⁶ rad  2.06 105s/ 1 rad

       θ =  3.19   s

     

3 0
3 years ago
What are input energy and output energy?​
makkiz [27]

Answer:

Explanation:

Input​ refers to the amount of energy put into a device, and ​ output​ refers to the amount of energy that comes out. A device may change the type of energy but not the amount. For example, a light bulb's input energy is the form of electrical energy, and its output energy is in the form of light and heat. Efficiency.

3 0
3 years ago
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