1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
ss7ja [257]
3 years ago
10

The speed of light is now defined to be 2.99792458 10 m/s (a) Express the speed of light to three significant figures m/s (b) Ex

press the speed of light to five significant figures m/s (c) Express the speed of light to seven significant figures
Physics
1 answer:
vazorg [7]3 years ago
8 0

Answer:

a) 3.00×10⁸ m/s

b) 2.9979×10⁸ m/s

c) 2.997925×10⁸ m/s

Explanation:

299792458 m/s is the speed of light

Let us write this in scientific notation first

2.99792458×10⁸ m/s

a) In three significant figures

We need to round the number to the hundredths place

3.00×10⁸ m/s

b) In five significant figures

We need to round the number to the ten thousandths place

2.9979×10⁸ m/s

c) In seven significant figures

We need to round the number to the millionths place

2.997925×10⁸ m/s

You might be interested in
Please,,,,,,,,,,,,,,,,,,,
Airida [17]

Answer:

bsjzbzkzznnzkzkznzjzbzbzbzbzbzbzbzbznznenenenenenene

4 0
3 years ago
7. What is the velocity of an object that has a mass of 4.5 kilograms and
labwork [276]

Answer:

266.66 m/s

Explanation:

p=mv

1200=4.5v

v=266.66 m/s

7 0
2 years ago
The area of the united states that has the highest level of average daily solar radiation by month would be
Vlada [557]
The area of the United States that has the highest level of Average Daily Solar radiation by month would be:

A) the Gulf Coast.
B) the Great Lakes.
C) the Southwest.
<span>D) the Pacific Northwest.

If this is your question the answer is C. the southwest.</span>
7 0
3 years ago
Hans Selye’s general adaptation syndrome theory proposes that adaptation to stress occurs in how many stages?
ANTONII [103]

<u>Answer:</u>

Adaption to stress occurs in three stages: alarm, fight or flight, exhaustion.

<u>Explanation:</u>

According to the general adaptation syndrome theory proposed by Hans Selye, the adaption to stress occurs in three stages which are:

1. alarm

2. fight or flight

3. exhaustion

This is a process which comprises of three stages that describes the physiological changes which a body undergoes when in stress (an emotional, mental and physical human response to a specific stimulus).

4 0
3 years ago
What are the advantages and disadvantages of series and parallel circuits?
DerKrebs [107]
Parallel circuit

Advandages: 1. Every unit that is connected in a parallel circuit gets equal amount of voltage.

2. It becomes easy to connect or disconnect a new element without affecting the working of other elements.

3. If any fault happened to the circuit, then also the current is able to pass through the circuit through different paths.

Disadvantages: 1. It requires the use of lot of wires.

2. We cannot increase or multiply the voltage in a parallel circuit.
3. Parallel connection fails at the time when it is required to pass exactly same amount of current through the units.

series circuit

Advantages: 1. Series circuits do not overheat easily. This makes them very useful in the case of something that might be around a potentially flammable source, like dry plants or cloth.

2. Series circuits are easy to learn and to make. Their simple design is easy to understand, and this means that it’s simple to conduct repairs .

3. we can add more power devices, they have a higher output in terms of voltage .

4. The current that flows in a series circuit has to flow through every component in the circuit. Therefore, all of the components in a series connection carry the same current.

Disadvantages: 1.If one point breaks in the series circuit,the total circuit will break.

2. As the number of components in a circuit increases ,greater will be the circuit resistance.
6 0
3 years ago
Other questions:
  • A bike rider approaches a hill with a speed of 8.5 m/s. The total mass of the bike rider is 91kg. What is the kinetic energy of
    8·1 answer
  • you measure or observe two events to occur at the same time one nearby and one further away. Which one did you actually see firs
    5·2 answers
  • The speed of a bullet of mass 20 g is 216 kilometre-per-hour what is kinetic energy in joules​
    13·1 answer
  • A ball on the end of a string is whirled around in a horizontal circle of radius 0.478 m. The plane of the circle is 1.02 m abov
    10·1 answer
  • Which of the following careers would require a degree in physics?
    6·1 answer
  • Calculate the change in entropy that occurs in the system when 3.10 mole of isopropyl alcohol (C3H8O) melts at its melting point
    9·2 answers
  • Energy from the Sun that bounces off the surface of the Earth and returns to space is called...
    11·1 answer
  • PLEASE HELP ME 20 POINTS Some metals have a molecular structure that makes them good conductors. Explain how understanding this
    12·1 answer
  • Please help me I’ll mark brainless .
    12·1 answer
  • Please help. It’s probably easy
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!