Calculate the mass of a gas with a density of 0.0065 g/cm3 and volume of 260 cm3.

Answers

Answer 1

Answer: Well mass=density times volume so .0065x260= 1.69

So your answer is 1.69 :)

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According to the periodic table, the average atomic mass of helium is A) 2 amu. B) 2.0026 amu. C) 4.0026 amu. D) 6.0026 amu.
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The SI base unit for measuring temperature is the degree Celsius.
a. True
b. False

Answers

a. True. The SI unit for measuring temperature is the degree Celsius

B. False

because Temperature (T) has SI unit Kelvin (K)

The wavelength of a given region of the electromagnetic spectrum ranges from 1 x 10-11 - 1 x 10-8 meters. Which waves are found in this region?A) gamma rays

B) x-rays

C) micro waves

D) radio waves

Answers

Answer: X-rays

The range of X-rays goes from 1x10^-8 to 1x10^-11.

What is an earthquake?

Answers

an earthquake is when two tectonic plate merge and one snaps up suddenly, causing the plate to shake violently until it settles back into place. hope i helped :3

What is the energy of a photon whose frequency is 6.0 x 10^20?(h=6.63 x10^-34 j•s; 1 eV=1.06x10^-19 J)

A. 1.6 MeV

B. 2.5 MeV

C. 3.3 MeV

D. 4.8 MeV

Answers

Answer:

3.75 MeV

Explanation:

The energy of the photon can be given in terms of frequency as:

E = h * f

Where h = Planck's constant

The frequency of the photon is 6 * 10^20 Hz.

The energy (in Joules) is:

E = 6.63 x10^(-34) * 6 * 10^(20)

E = 39.78 * 10^(-14) J = 3.978 * 10^(-13) J

We are given that:

1 eV = 1.06 * 10^(-19) Joules

This means that 1 Joule will be:

1 J = 1 / (1.06 * 10^(-19)

1 J = 9.434 * 10^(18) eV

=> 3.978 * 10^(-13) J = 3.978 * 10^(-13) * 9.434 * 10^(18) = 3.75 * 10^(6) eV

This is the same as 3.75 MeV.

The correct answer is not in the options, but the closest to it is option C.

A car weighs 186 N. It's being pushed forward by its engine with a force of 942 N.1. What is the normal force acting on the car by the road?
N
2. What is the force of friction acting on the car by the road?.
N
3. What is the coefficient of kinetic friction between the car and the road?

Answers

Ok that a good question

Explain subduction simply.

Answers

Answer:

Subduction is when two tectonic plates meet. One of the plates is pushed under the other into the Earth's mantle. Subduction causes the most powerful earthquakes in the world. Earthquakes caused by subduction can lead to tsunamis.

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