What happens to the temperature of a substance during a phase change?a. The temperature increases.
b. The temperature decreases.
c. The temperature remains constant.
d. The temperature fluctuates randomly.

Answers

Answer 1

Answer: during a phase change, the temperature remains constant. obviously all the heat is used in phase transformation.

Answer 2

Answer:

Answer:

THE TEMPERATURE DECREASES

Explanation:

the clouds reflect the suns rays so the go away therefore making it less hot

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Name three elements that are good conductors of electricity
Polychlorinated biphenyls (PCBs) have been banned because they are an environmental hazard. Which of the following was NOT a reason for banning them?
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Which of the following statements about iron filings placed upon glass resting on top of a bar magnet is false? A. The density of the filings will match the intensity of the magnetic field. ield outlined by the filings will be from the north pole of the magnet to the south pole. C. The filings will be clustered more densely where the field is weakest. D. The filings will sit on the glass on curved paths between the north and south poles.

Answers

The correct answer for the question that is being presented above is this one: " C. The filings will be clustered more densely where the field is weakest." The statement about iron filings placed upon glass resting on top of a bar magnet that is false is that the filings will be clustered more densely where the field is weakest.

Correct answer choice is:

C. The filings will be clustered more densely where the field is weakest.

Explanation:

The closer mutually the field lines will be the more powerful the field would be present. The field is really powerful in the axis of the magnet, though as they are frequently accommodated in the magnet itself, the field is quite weak in the air close to the axis. As the field lines make rings, they have to penetrate in one spot and drop at different, the two poles must be extremely close mutually indeed in the air, and the field is consequently stronger. These points are the North and the south poles.

For what purpose is a screen name used?

Answers

A unique sequence of characters that a person chooses to use for identification purposes when interacting with others online, as in computer games, instant messaging, or forums.

Answer: C. To protect one’s identity.

Explanation: A screen name is used to protect one’s identity.

A fastball pitcher can throw a baseball at a speed of 40 m/s (90 mi/h). (a) Assuming the pitcher can release the ball 16.7 m from home plate so the ball is moving horizontally, how long does it take the ball to reach home plate? (b) How far does the ball drop between the pitcher’s hand and home plate?

Answers

Answer:

a) 0.4175 seconds

b) 0.854 m

Explanation:

t = Time taken

u = Initial velocity = 40 m/s in x direction

v = Final velocity

s = Displacement = 16.7 m

a = Acceleration due to gravity = 9.81 m/s²

a) Time = Distance / Speed

$\text{Time}=(16.7)/(40)=0.4175\ s$

Time taken by the ball to reach home plate is 0.4175 seconds

b) Here velocity will by taken in y direction will be 0

$s=ut+(1)/(2)at^2\n\Rightarrow s=0* 0.4175+(1)/(2)* 9.81* 0.4175^2\n\Rightarrow s=0.854\ m$

The ball drops by 0.854 m between the pitcher’s hand and home plate.

Which type of thunderstorm forms in a narrow band that's about 10 to 20 miles wide? A. Single-cell thunderstorm

B. Multi-cell line

C. Multi-cell cluster

D. Supercell

Answers

Answer:

B. Multi-cell line

Explanation:

A multi-cell line, or how it is more commonly known, a squall line, is basically a group of storms forming a line, like a bow, they have been seen to cover hundreds of miles long but usually only 10 or 20 miles wide.

It is theorized that this is because when a cyclone is formed, there are two forces of "wind" one ahead and one behind, concentrating air masses as if the winds were "squishing" them to form a line.

Answer: Multi-cell Line

Explanation:

Multi-cell line storms form in a long, narrow line. While multi-cell lines may be just 10 to 20 miles wide, they can be hundreds of miles long. Multi-cell lines are known as "squall lines."

A _____ is used to warm air for heating. boiler furnace solar collector thermostat

Answers

The answer would be furnace.

Answer:

the correct answer is furnace

White light is shining on a green grape. The grape _____.absorbs green light
reflects green light
reflects all colors of light except green
transmits green light

Answers

The grape absorbs all colors except green, and green light is the
only light that remains to bounce around and enter people's eyes.

This is a big part of the reason why, whenever somebody looks at
the grape, they remark "Oh look ! The grape is green !"

Answer:

reflects green light.

Explanation:

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