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densk [106]
4 years ago
7

Which of the following statements is true?

Physics
2 answers:
NikAS [45]4 years ago
8 0

Answer:

A. The boiling and condensation points of a substance are the same

Explanation:

The boiling point of a substance is the temperature at which it changes from liquid to gas while the point at which a substance changes from gas to liquid is called its condensation point. As long as a substance is pure, it condenses at the same point at which it boils.

Pure water for example has a condensation point and boiling point of 100 degrees Celsius.

ziro4ka [17]4 years ago
4 0
The best answer is C.
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You've learned about simple circuits and resistors at this point. So, let's talk about how we can power different circuits. Supp
DIA [1.3K]

Answer:

Explanation:

Total resistance of 2 bulb in series

= 100 +100 = 200 ohm

current in each bulb

= 9/200 = .045 A

In case of parallel combination of bulb

total resistance

= 100 x 100 / (100+100)

50 ohm

current in the main circuit

= 9 / 50 A

current in each bulb

= 9 / (2 x 50)

.09

So in the second case current is more , hence heat generated too will be more . So brightness too will be more.

First set (  in  series ) will be dimmer.

3 0
3 years ago
What is the centripetal force necessary to keep a 0.4 kg object rotating in a circular path
ivolga24 [154]

Answer:

ertdhrsg

Explanation:

gesrgsg

7 0
3 years ago
What is the angular position in radians of the minute hand of a clock at 2:55?
OleMash [197]
Refer to the diagram shown.

There are twelve 5-minute divisions.
Each 5-minute division is equal to 360°/12 = 30°.

By convention, angles are measured counterclockwise from the positive x-axis.
The angular position of the minute hand at 2:55 is
θ = 90° + 30° = 120°

Because 360° = 2π radians, therefore
θ = (120/360)*2π = (2π)/3 radians  = 2.0944 radians

Answer: (2π)/3 radians ofr 2.0944 radians.

8 0
3 years ago
Read 2 more answers
When water (H₂O) freezes into ice, some of the properties have changed. What stays the same?
erastova [34]

Answer:

1st one

identity of the H₂O

When water (H2O) freezes into ice, some of the properties have changed but the identity of the H2O is the same. Explanation; Water can exist in liquid, solid; ice and gaseous state; steam. Freezing occurs when water is continuously cool until it turns to solid ice, water freezes at zero degree Celsius

Hope This Helps

4 0
2 years ago
Which is an example of a covalent bond?
AleksAgata [21]
Hello there.

Question: <span>Which is an example of a covalent bond?

Answer: Water and Diamonds are good examples of covalent bonds.

Hope This Helps You!
Good Luck Studying ^-^</span>
7 0
4 years ago
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