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3 years ago

Atomic size generally _____.

1 answer:

6 0

Atomic size generally decreases as you move from left to right across a period because as fast as it goes it will always be slower than generally the size.

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A runner wants to run 10.4 km . She knows that her running pace is 7.6 mi/h .

vaieri [72.5K]

Answer:

The runner should run 51 minutes.

Explanation:

Distance wished by runner to cover = d = 10.4 km

Time taken by the runner to cover 10.4 km = T

Speed of the runner = 7.6 mile/hour

1 mile = 1.60934 km

1 hour = 60 min

$7.6 mile/Hour=\frac{7.6\times 1.60934 km}{1\times 60 min}=0.2038 km/min$

$Speed=\frac{Distance}{Time}$

$T=\frac{10.4 km}{0.2038 km/min}=51.0179 min\approx 51 minutes$

The runner should run 51 minutes.

6 0

3 years ago

A lab group of students shines a keychain light at a red and green gummy bear. They make the observation that the white light be

Furkat [3]

Answer:

Reflection and Refraction

3 0

3 years ago

What evidence supports a scientist's conclusion that fossil B is older than fossil A? (4 points)

Hoochie [10]

Answer:

Choice B, as time goes on the surface level rises and stuff buried underground gets further and further below surface level.

3 0

3 years ago

A gas in a sealed container has a pressure of 125 atm at a temperature of 303 K. If the pressure in the container is increased t

victus00 [196]

Answer:

$T_2=484.8K$

Explanation:

Hello there!

In this case, according to the the variable temperature and pressure and constant volume, it turns out possible for us to calculate the new temperature via the Gay-Lussac's law as shown below:

$\frac{T_2}{P_2} =\frac{T_1}{P_1}$

Thus, by solving for the final temperature, T2, we obtain:

$T_2 =\frac{T_1P_2}{P_1}$

So we plug in the given data to obtain:

$T_2 =\frac{303K*200atm}{125atm}\\\\T_2=484.8K$

Best regards!

6 0

3 years ago

Electric field lines /Conductor/ Electroscope/ Insulator Elementary charge/ Electric field/ Charging by conduction/ Charging by

Inessa05 [86]

Answer: See explanation

Explanation:

1. Separation of charges in an object without touching it is (charging by induction).

2. The work done moving a positive test charge between two points in an electric field divided by the magnitude of the test charge is the electric (potential difference).

3. An electric (conductor) is a material through which charges move about easily. (Charging by conduction) is giving a neutral object a charge by touching it with a charged object.

4. A material through which electrical charges does not move easily is an electrical (insulator).

5. The lines providing a picture of the size and strength of the field around a charged object are called the (electric field lines).

6. The property of the space around a charged object that exerts a force on other charged objects is the (electric field).

7. A device that helps determine charge using pieces of metal foil is an (electroscope).

8. The magnitude of the charge of an electron is the (elementary charge)

4 0

3 years ago