On a summer afternoon, the sand on the beach can get very hot. When you step on the sand in bare feet, you can burn yourself.

2 answers:

8 0

<span>Heat from the Sun is transferred to the sand without direct contact. This heat is then transferred to your feet by direct contact.</span>

topjm [15]3 years ago

7 0

The second sentence best represents the situation because the sun does not touch the sand so direct contact is not made. Then, your feet do touch the sand so direct contact is made. Thus, "Heat from the sun is transferred to the sand without direct contact. This heat is then transferred to your feet by direct contact." is the best answer.

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If a sheep is running at 3.0 m/s with a mass of 60 kg what is its kinetic energy

borishaifa [10]

Answer:270joules

Explanation:KE = 1/2mv^2

KE = 1/2(60kg)(3.0)^2 = 270 Joules

8 0

3 years ago

Will give correct answer brainliest

lukranit [14]

Answer:

I THINK it’s A

Explanation:

Because all the other answers don’t make sense.

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3 years ago

which of the following statements describes the formation of acid rain?...A. acid rain forms from human activities and lowers th

olga_2 [115]

The correct answer is A. Acid rain forms from human activities and lowers the pH of rainwater below 7

Explanation:

The term "acid rain" is used to refer to rainwater with a low pH or a high acidity, this includes rainwater with a pH below 7 (solutions with a pH under 7 are acidic). In terms of formation, acid rain is mainly the result of human activities such as factories or cars that release pollutants into the atmosphere including nitric and sulfuric acids and these alter the natural pH of rain and makes it more acidic. Additionally, acid rain has negative consequences such as the death of fishes and other organisms in lakes, rivers, etc. because the acidity is toxic to many organisms. Thus, acid rain is the result of human activities and it lowers the pH of rain (Option A).

7 0

3 years ago

Two diverging light rays, originating from the same point, have an angle of 5° between them. After the rays reflect from a plane

LuckyWell [14K]

As a reference, consider the line from the point perpendicular to the mirror.
That direction is called 'normal' to the mirror.

The ray on the right leaves the point traveling 5° to the right of the normal,
and leaves the mirror on a path that's 10° to the right of the normal.

The ray on the left leaves the point traveling 5° to the left of the normal,
and leaves the mirror on a path that's 10° to the left of the normal.

The angle between the two rays after they leave the mirror is 20° .

Frankly, Charlotte, if there were more than 5 points available for this answer,
I'd seriously consider giving you a drawing too.

3 0

3 years ago

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laila [671]

Answer:

Less friction

Explanation:

Paolo's bike is too difficult to pedal because there is too much friction in the mechanisms of the bike. To reduce friction, Paolo must oil the chain. This will make the bike run much more smoothly and allow for easier pedalling.

6 0

2 years ago