All categories

3 years ago

The speed of light is 1.86×10^5 miles per second.how many meters will light travel in 1.0 seconds

Chemistry

2 answers:

evablogger [386]3 years ago

6 0

Einstein's theory of special relativity sets of the speed of light, 186,000 miles per second (300 million meters per second). ... The speed of light in a vacuum is 186,282 miles per second (299,792 kilometers per second), and in theory nothing can travel faster than light.

sergejj [24]3 years ago

4 0

Answer: $3.0\times 10^8m$

Explanation:

Speed is defined as the distance travelled per unit time.

$speed=\frac{distance}{time}$

Units of speed are inter convertible:

Given : speed = $1.86\times 10^5miles/sec$

That is in 1 second , light travels = $1.86\times 10^5miles$

Converting miles to meters:

1 mile = 1609.34 m

$1.86\times 10^5miles=\frac{1609.34}{1}\times 1.86\times 10^5=3.0\times 10^8m$

Thus speed of light will be $3.0\times 10^8$ meters.

You might be interested in

A clothing pattern calls for 4.81 yd of fabric. How many square inches of fabric does the pattern use

Ksenya-84 [330]

To answer this question you need to know how many square inches equals one square yard.
1296 square inches make one square yard.

Therefore total square inches =1296x4.81= 6233.76 square inches

5 0

3 years ago

What does a dissolved salt look like?

Monica [59]

Answer:

I want to say your answer is B)

7 0

3 years ago

You need to prepare 1 L of the citric acid/citrate buffer. You have chosen to use Method 1 (see lab presentation). Calculate the

prisoha [69]

Answer:

3.11 is the pH of the buffer

Explanation:

The pH of a buffer is obtained using H-H equation:

pH = pKa + log [Conjugate base] / [Weak acid]

Where pH is the pH of the buffer, pKa = -log Ka = 3.14 for the citric buffer and [] could be taken as the moles of each species.

The citric acid,HX (Weak acid), reacts with NaOH to produce sodium citrate, NaX (weak base) and water:

HX + NaOH → H2O + NaX

That means the moles of NaOH added = Moles of sodium citrate produced

And the resulitng moles of HX = Initial moles - Moles NaOH added

Moles HX and NaX:

Moles NaOH = 0.100L * (0.65mol / L) = 0.065 moles NaOH = Moles NaX

Moles HX = 0.300L * (0.45mol / L) = 0.135 moles HX - 0.065 moles NaOH = 0.070 moles HX

Replacing in H-H equation:

pH = 3.14 + log [0.065mol] / [0.070mol]

pH = 3.11 is the pH of the buffer

8 0

3 years ago

If E=mc^2,solve for both m and c. Also, if m=80 and c=0.40 what is the value of E?

Pie

Answer:

$m = \frac{E}{c^2}$

$c = \sqrt{\frac{E}{m} }$

$E = 12.8 J$

Explanation:

Part 1: Solving for m

We are given that:

E = mc²

To solve for m, we will need to isolate the m on one side of the equation

This means that we will simply divide both sides by c²

$m = \frac{E}{c^2}$

Part 2: Solving for c

We are given that:

E = mc²

To solve for c, we will need to isolate the m on one side of the equation

This means that first we will divide both sides by m and then take square root for both sides to get the value of c

$c^2 = \frac{E}{m}\\ \\ c=\sqrt{\frac{E}{m}}$

Part 3: Solving for E

We are given that:

m = 80 and c = 0.4

To get the value of E, we will simply substitute in the given equation:

E = mc²

E = (80) × (0.4)²

E = 12.8 J

Hope this helps :)

4 0

4 years ago

50PTS When an electric current is passed through water during the process of electrolysis, two gases are formed. One gas has a b

3241004551 [841]

This is a physical change, you can turn the current off not changing something permanently such as mixing cake batter you cant delude the eggs and flour so its would be physical.

6 0

3 years ago