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3 years ago

8. According to the passage, in order for LeBron James to score a slam-dunk, what must he exert?

Physics

2 answers:

V125BC [204]3 years ago

8 0

Answer:

Kenetic Energy?

Explanation:

I need more context of what you are studying here...

ICE Princess25 [194]3 years ago

7 0

Jdfbfifbfifbsidbfjttha eilliansodnfbtutb

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Of the three types of radiation listed below, which is the least penetrating and which is the most penetrating? -alpha -beta -ga

Vikentia [17]

Answer:

Alpha is the least penetrating radiation listed below.

Gamma is the most penetrating radiation in the given list.

These rays can be used to detect cancer, sterilizing the medical instrument, smoke detector, etc.

Radiation emitted from the radioactive elements also have very harmful. They affect the living being a lot. Waste from the nuclear reactor also contains harmful radiation which causes Land pollution if not disposed of properly.

3 0

3 years ago

Trace the path of a ray emitted from the tip of the object toward the focal point of the mirror and then the reflected ray that

Crazy boy [7]

Answer: find the attached files for the answer

Explanation:

The reflected ray appears to have originated from the focal point. We should actually draw a vector from the focal point through the point where the incident ray hits the mirror but we shorten the vector so that its starting point is on the mirror, without changing its angle.

Please find the attached files for the solution

5 0

3 years ago

The radioactive isotope U-238 has protons and neutrons.

Archy [21]

Answer:

92 protons, 146 neutrons

Explanation:

Uranium will always have the same amount of protons, because that is what defines the element. Uranium has 92 protons, meaning that the rest of the mass of the atom comes from neutrons. 238-92=146 neutrons. Hope this helps!

4 0

2 years ago

Read 2 more answers

Compare and contrast electric conductors and electric insulators. Give an example of each.

ludmilkaskok [199]

An example of conductors of heat would be iron pans. a example of electric insulators would be copper, gold and silver. to contrast conductors and insulators, insulators let electricity pass through them while conductors restricts electricity. both conductors and insulators can work with lithium and sodium.

3 0

2 years ago

In the context of energy transfers with hot and cold reservoirs, the sign convention is that _______________.

Likurg_2 [28]

Answer:

B. QC > 0; QH < 0

Explanation:

Given that there are two reservoir of energy.

Sign convention for heat and work :

1.If the heat is adding to the system then it is taken as positive and if heat is going out from the system then it is taken as negative.

2. If the work is done on the system then it is taken as negative and if the work is done by the system then it is taken as positive.

From hot reservoir heat is going out that is why it is taken as negative

$Q_H$

From cold reservoir heat is coming inside the reservoir that is why it is taken as positive

$Q_C>0$

That is why the answer will be

$Q_H$ , $Q_C>0$

8 0

3 years ago