PHYSICS HIGH SCHOOL

Which of the following energy sources is expected to have the least growth in the next 20 years?a. hydroelectricity
b. coal
c. natural gas
d. nonhydro renewables

Answers

Answer 1
Answer:

Answer;

A. hydroelectricity

Explanation;

A nonrenewable resource is a resource of economic value that cannot be readily replaced by natural means on a level equal to its consumption. Most fossil fuels, such as oil, natural gas and coal are considered nonrenewable resources in that their use is not sustainable because their formation takes billions of years.

-Renewable resources are resources which are being continuously consumed by man but are renewed by nature constantly are called as Renewable Resources. These resources are inexhaustible because they cannot be exhausted permanently.  Some examples of renewable energy sources are solar energy, wind energy, hydropower, geothermal energy, and biomass energy.


Answer 2
Answer:

Answer:

hydroelectric

Explanation:

i checked and read and lots of people said "coal" but then others said NOT COAL so i guessed and it was right

Related Questions

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With an average surface temperature of about 737 K, _______ is the hottest planet.A. VenusB. MercuryC. MarsD. Earth
What is the temperature outside of a tree?
The relationship between a cathode and an anode involvesA. protons.B. diodes.C. electrons.D. neutrons.
When compounds form, what is one result for the atoms that bonded?A. a stable arrangement of electrons B. an unstable arrangement of electrons C. more than eight electrons in their valence shell D. fewer than eight electrons in their valence shell

In the lungs there are tiny sacs of air, which are called alveoli. an oxygen molecule is trapped within a sac, and the uncertainty in its position is 0.12 mm. what is the minimum uncertainty in the speed of this oxygen molecule?

Answers

As we know that Heisenber's uncertainty law gives that

\Delta x * \Delta P = (h)/(4\pi)

here we know that

\Delta x = uncertainty In Position = 0.12 mm

\DeltaP = uncertainty In Momentum = m*v

now from the above formula we will have

0.12 * 10^(-3)* 32*10^(-3)v = (h)/(4\pi)

3.84*10^(-6)*v = (6.6*10^(-34))/(4\pi)

v = 1.37 * 10^(-29)m/s

so above is the uncertainty in the speed

Which of the following represents units of geologic time in increasing order?A. Eon, era, period, epoch
B. Epoch, period, eon, era
C. Era, eon, period, epoch
D. Epoch, period, era, eon

Answers

Answer:

D. Epoch, period, era, eon

Explanation:

An eon refers to the largest division of time in Earth's history used on the geological time scale. The current eon is divided into three eras. the current era is divided into three periods and the current period is divided into two epochs, reaching the Holocene, which is the current geological epoch.

B. is the correct answer.

The net charge of 3 mol of protons isa) 4.81×10 4 C .
b) 3.00 C
c) 4.81×10 −19 C
d) 2.89×10 5 C

Answers

The charge of 1 mole of proton is equivalent to 1.60217656x10^-19 coulombs. This is also called an elementary charge. Multiply that by 3 to get the net charge of three moles of protons.

Charge of 3 mol protons = 3 x 1.60217656x10^-19 = 4.81x10^-19 coloumbs

So the answer is c) 4.81×10 −19 C

Oceanic electric fields produce electric currents. True False

Answers


Wow ! That's wild ! 
I never heard of an "oceanic" electric field before.

Electric currents are the flow of great numbers of electrons
inside a conducting material.  What makes them move is
an electrostatic or magnetic field inside the conductor.

Things that happen in the ocean produce ocean currents,
not electric ones.

Which one of the following statements about vitamins is most accurate? A. Vitamins help produce the immune response. B. Vitamins store energy from carbohydrates, lipids, and proteins. C. Vitamins restrict new tissue growth. D. Vitamin overdose restricts reproductive capacity.

Answers

Answer: Option (A) is the correct answer.

Explanation:

Vitamins are the organic compounds which are necessary for normal growth and provide nutrition to the body.

Vitamins help in conversion of food into energy  and repair cellular damage.

For example, Vitamin C helps in boosting immune system. Vitamin B6 helps in the biochemical reactions occurring in the immune system.

Thus, we can conclude that out of the given options, the statement Vitamins help produce the immune response is most accurate.

The most accurate statement about vitamins is vitamins help produce the immune response. (Option A)

What are the functions of vitamins?

Vitamins play a crucial role in supporting the immune system by promoting the production and functioning of immune cells, aiding in the synthesis of antibodies, and assisting in the maintenance of overall immune health.

They act as cofactors or coenzymes in various biochemical reactions that are essential for the immune response.

While all vitamins are important for overall health, certain vitamins, such as;

  • vitamin C
  • vitamin D, and
  • the B vitamins

are particularly known for their immune-supporting properties.

Learn more about vitamins here: brainly.com/question/29501463

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Aiden takes 0.10s to throw a baseball, which leaves his hand with a velocity of 49m/s. The balls acceleration is

Answers

Since the ball was not moving before it let Aiden's hand, the formula used to calculate the acceleration is
a = (v)/(t)
, where a is acceleration, v is velocity and t is the time. We put them in the formula and get
a = (49)/(0.1) \n a = (490)/(1) \n a = 490
The acceleration is 490 m/s^2
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