PHYSICS HIGH SCHOOL

When used as an energy source in a nuclear power plant, uranium is burned in a similar way as one would burn wood or coal for energy. a. True
b. False

Answers

Answer 1
Answer: False because nuclear fission is used on uranium in nuclear power station and this reaction is continuous since a neutron hits a uranium atom and splits it. Then 2-3 neutrons are released which continues the cycle or hitting other uranium atoms. If this reaction isn't contained, it could get out of control and become a nuclear bomb. So it can't be burned like wood nor coal.
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Imagine a 10kg block moving with a velocity of 20m/s to the left. Calculate the kinetic energy of this block.
Why does it make sense that a 9 Liter pot of boiling water has more heat than a 1.5 L pot of boiling water?
A student who weighs 550 N is wearing a backpack that weighs 80 N. The student is standing still on level ground. Give your answers to the following questions in newtons. Remember, enter only the number; don't try to enter the units.a) What is the magnitude of the net force on the student?b) What is the magnitude of the contact force on the student by the backpack?c) What is the magnitude of the contact force on the student by the ground?
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What is the electric field experienced by a charged balloon if the charge on the balloon is 9.4 × 10-10 coulombs and the force it experiences is 8.2 × 10-2 newtons?

Answers

Answer:

Electric field, E=8.72* 10^7\ N/C

Explanation:

It is given that,

Charge on the balloon, q=9.4* 10^(-10)\ C

Force experienced by the balloon, F=8.2* 10^(-2)\ N

The relation between electric force and electric field is given by :

E=(F)/(q)

E=(8.2* 10^(-2))/(9.4* 10^(-10))

E=8.72* 10^7\ N/C

Hence, the electric field experienced by a charged balloon is 8.72* 10^7\ N/C
We know, F = q.E
E = F/q
Here, F = 8.2 * 10⁻²
q = 9.4 * 10⁻¹⁰

Substitute values into the expression:
E = 8.2 * 10⁻² / 9.4 * 10⁻¹⁰
E = 8.72 * 10⁷ N/C

Hope this helps!

Which describes a grizzly bear’s habitat? all the biotic factors in the ecosystem all the abiotic factors in the ecosystem the role of the bear in the ecosystem the physical area where the bear lives

Answers

The best description of a grizzly bear’s habitat is:

  • D. the physical area where the bear lives

A habitat is the natural surrounding or place where an organism lives, grows and competes with other organisms for resources. It is a physical area.

There are three major types of habitat which includes:

  • Freshwater habitat: This refers to the area of water where animals live. Examples of animals that live in a freshwater habitat includes: sea turtle, fishes, etc. Examples of freshwater habitat include:
  1. Rivers
  2. Lakes
  3. Pond, etc
  • Marine water habitat: This is where a group of organisms live. Examples include:
  1. Oceans
  2. Seas, etc.
  • Coastal habitat: This is an intersection between the land and sea habitats.

A grizzly bear is a subspecies of brown bear and is resident in the northern plains of America and their habitat is a physical location where they live.

Therefore, the correct answer is option D

Read more here:

brainly.com/question/19482426

Answer:

I found this question elsewhere on brainly and the answer was verified. Here it is!

Explanation:

Grizzly bear habitats is the habitat or the physical space where the bear lives. Grizzly bears can be found in many different habitats from dense forests to subalpine meadows, arctic tundra and open plains. We can also conclude that all of the bears live in grizzly bear's habitat in order to survive.

Is adding sugar to lemonade a chemical or physical change

Answers

physical.. think of it as a person putting on weight.. adding weight, but still a person. adding sugar, but still lemonade.
That's a physical change since nothing's really happening except for the flavor. Only the flavor changed cause you added something, but it's not a chemical

Small pockets of synovial fluid that reduce friction and act as a shock absorber where ligaments and tendons rub against other tissues are called

Answers

Answer:

bursae.

Explanation:

A student who has trouble hearing and must have a written copy of class lectures in order to participate in class is considered to have which of the following?

Answers

For this, the student has problems when participating in class discussions. I believe that this type of student has a participation restriction disability. This disability refers to an individual who cannot focus or is not capable of participating in social activities.

Answer: The answer is c

Explanation:

What does E=MC5, do you think einstein was correct or wrong,

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Einstein's famous equation has a 2 in it, not a 5. It makes no difference what you, I, or anyone else 'thinks'. That equation has been proven correct in hundreds of experiments and thousands of observations and measurements since it was published. Among other things, it happens to be the reason why the sun shines.
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