1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
aalyn [17]
3 years ago
12

Give two reasons why hydroelectricity could be better alternative of biofuel in the context of our country.​

Physics
1 answer:
Semmy [17]3 years ago
3 0

Answer:

Hydroelectricity is a renewable energy source.

Hydroelectricity increases the stability and reliability of electricity system

Hydroelectricity helps fight climate changes.

Explanation:

If we use hydroelectricity our country would be in good climate and not a bad one. And the best facts it is renewable.

You might be interested in
All diseases can be prevented.<br><br> A) True or B) False
lakkis [162]
B. false is the answer.
8 0
3 years ago
Read 2 more answers
Which is an example of something heated by conduction
hodyreva [135]
An example would be a pot on a stove. The radiation from the source of the heat (the stove) would make the handle hot by conduction from heat through contact.

Another example could be a metal spoon in a hot cup of coffee. The coffee itself is hot, but since the spoon is in the coffee and making contact, part of the spoon will become hot from the radiation of the source of heat (the hot coffee). Thus, conduction.
5 0
3 years ago
In each cycle, a heat engine an input of 1940 J of heat and exhausts 1480 J of heat. What is the thermal efficiency?
AleksAgata [21]

Answer:

0.237 (23.7 %)

Explanation:

The thermal efficiency of an engine is given by:

\eta=\frac{W}{Q_{in}}

where

W is the useful work output of the engine

Q_{in} is the heat in input

Here we have:

Q_{in}=1940 J

and the work done is the total heat in input minus the heat exhausted:

W=1940 J - 1480 J=460 J

So, the efficiency is

\eta=\frac{460 J}{1940 J}=0.237 (23.7 %)

8 0
3 years ago
Earth's orbit around the Sun is slightly elliptical. Thus, Earth actually gets closer to the Sun during part of the year. What h
Fudgin [204]

Answer:

C)Earth's orbital speed is greater when it is closer to the Sun than when it is farther from the Sun.

Explanation:

We can use Kepler's 2nd law or the law of area to answer this question.

The law states that the rate of area swept out by a planet's orbit is same throughout the orbit. For the farthest point since the distance is large as compared to to the nearest point, the possibility that area swept is large. Hence, to compensate the extra swept area. the orbital speed has to decrease  at the largest point.

Hence, planet's speed is greater when it is closer to sun than the speed when it is farther.

6 0
3 years ago
An object moving with constant acceleration near the surface of the earth
ziro4ka [17]
The answer is C because if it’s moving with a constant speed it’s gonna be balanced and there will be no force
6 0
3 years ago
Other questions:
  • if i drop a watermelon from the top of one of the tower dorms at csu and it takes 3.34 seconds to hit the ground calutulate how
    12·1 answer
  • Which best describes the relationship between population size, carrying capacity, and limiting factors?
    5·2 answers
  • Which statement describes an unanticipated impact of a technological
    11·1 answer
  • Which substance form a homogenous mixture when mixed with water?
    12·2 answers
  • A 92-kg skier is sliding down a ski slope that makes an angle of 40 degrees above the horizontal direction. the coefficient of k
    5·1 answer
  • Why do the spoon and fork not fall?​
    7·1 answer
  • Which parts of a torch are conductors and insulators
    7·1 answer
  • PLS HELP
    15·1 answer
  • Agatha the snake is 50 centimeters long.3 years from now she will be 152 centimeters long and fully grown. If Agatha grows at co
    9·1 answer
  • Suppose the three resistors in the picture represents a 240 W
    7·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!