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
julsineya [31]
3 years ago
8

The most precise measurement of the speed of light in vacuum is 299,792,458 m/s. Which of the following values would you use to

write this speed in scientific notation to three significant figures?
Physics
1 answer:
Luda [366]3 years ago
3 0

Answer:

v = 3.00 x 10⁸ m/s

Explanation:

given,

speed of light in vacuum = 299,792,458 m/s

speed of light in scientific notation to three significant figures

v = 2.99792458  x  10⁸ m/s

by rounding off the speed to three significant figure.

v = 3.00 x 10⁸ m/s

On the fourth place the value is greater than 5 so, on the third place 1 will be added.

now, the speed with three significant figure comes out to be

v = 3.00 x 10⁸ m/s

You might be interested in
It is important that your muscles are very warm when doing this type of stretching.
MaRussiya [10]

Answer:

ballistic stretching

3 0
3 years ago
Read 2 more answers
After striking both mirrors, at what angle relative to the incoming ray does the outgoing ray emerge?
PIT_PIT [208]
The appropriate response is Zero degrees. The beam will leave the two mirrors along a way parallel to the one it came in on. This is the guideline of the corner reflector, which is frequently utilized as a radar target. Take note of that the corner reflector utilizes three reflecting surfaces (that are set up at 90o from each other) rather than the two like are being utilized here. Wikipedia has a truly awesome drawing that shows this two-dimentional issue pleasantly. A moment connection is given to the article on the corner reflector and the 3-D angles.
4 0
3 years ago
The electric potential at the origin of an xy-coordinate system is 40 V. A -8.0-μC charge is brought from x = +∞ to that point.
vredina [299]

Answer:

-320 μJ.

Explanation:

Consider a point with an electrical charge of q. Assume that V is the electrical potential at the position of that charge. The electrical potential of that point charge will be equal to:

\text{Potential Energy} = q \cdot V.

Keep in mind that since both q and V might not be positive, the size of the electrical potential energy might not be positive, either.

For this point charge,

  • q = \rm -8.0\; \mu C; (that's -8.0 microjoules, which equals to \rm -8.0\times 10^{-6}\; J)
  • V = \rm 40\; V.

Hence its electrical potential energy:

\text{Potential Energy} = q\cdot V = \rm (-8.0\; \mu C) \times 40\; V = -320\; \mu J.

Why is this value negative? The electrical potential energy of a charge is equal to the work needed to bring that charge from infinitely far away all the way to its current position. Also, negative charges are attracted towards regions of high electrical potential. Bringing this \rm -8.0\; \mu C negative charge to the origin will not require any external work. Instead, this process will release 320 μJ of energy. As a result, the electrical potential energy is a negative value.

7 0
3 years ago
A vehicle with a manual transaxle can be cranked and started without depressing the clutch pedal. Technician A says the clutch i
SashulF [63]

Answer: Technician B

Explanation: In manual cars,the clutch safety is designed to stop the vehicle from moving when you start the gnition. It prevents power from flowing into the circuit . This is found in the pedal mechanism of cars so depressing the clutch pedal will likely cause a defective in the clutch safety. You will begin to perceive the clutch burning and white fumes coming out from the pedal.

6 0
3 years ago
Which of these reactions is responsible for energy radiating from stars, including the Sun?
snow_tiger [21]

Answer: nuclear fusion

Explanation: give me a brainliest

3 0
3 years ago
Other questions:
  • James took two pea plants, placing one in a dark closet and the other on a sunny window sill. Both are located in air-conditione
    11·1 answer
  • A football coach starts at the 50-yard line (a) and walks to the 10-yard line (b) he turns around and walks to the 40-yard line
    9·1 answer
  • What acceleration will a force of 20 newton's cause it applied to a go kart with a mass of 20 kilograma
    10·1 answer
  • When two stars are bound together gravitationally and orbit a common mass, they're known as
    12·1 answer
  • A food department is kept at 2128C by a refrigerator in an environment at 308C. The total heat gain to the food department is es
    15·1 answer
  • Sodium undergoes beta decay and becomes magnesium, write an equation. please help...
    12·1 answer
  • 4. A steel rod is 5 cm x 5 cm x 120 cm. If steel has a density of 7.80 g/cm', what is the
    6·1 answer
  • . Are there human health risks from exposure (or overexposure) to X-rays? If so:
    6·2 answers
  • Where should clouds form and why
    5·1 answer
  • I think it’s gas but I’m not sure.
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!