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Kitty [74]
3 years ago
12

A helium atom falls in a vacuum. The mass of a helium atom is 6.64 x10-27 kg. (a) From what height must it fall so that its tran

slational kinetic energy at the bottom equals the average translational kinetic energy of a helium molecule at 300 K

Physics
1 answer:
maw [93]3 years ago
6 0

Answer: The question is incomplete as some other details are missing. Here is the complete question ; A helium atom falls in a vacuum . The mass of a helium atom is 6.64 x 10-27 kg . (a) From what height must it fall so that its translational kinetic energy at the bottom equals the average translational kinetic energy of a helium molecule at 300 K? (b) At what temperature would the average speed of helium atoms equal the escape speed from the Earth, 1.12 x 104 m/s.

a) Height = 95.336Km

b) Temperature = 20118.87K

Explanation:

The detailed steps and calculations is shown in the attached file.

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A boat takes off from the dock at 2.5m/s and speeds up at 4.2m/s2 for 6.0 seconds how far has the boat traveled
suter [353]

Answer:

The answer is "91 m"

Explanation:

v_0 = 2.5 \ \frac{m}{s}\\\\a = 4.2\ \frac{m}{s^2}\\\\t = 6.0\ s\\\\\Delta x=?

Using formula:

\Delta x = v_0 t +\frac{1}{2} at^2\\\\

      = 2.5 \times 6.0  +\frac{1}{2}  \times  4.2 \times 6.0^2\\\\= 90.6\  m \approx 91\ m

5 0
3 years ago
How did the volcano Mt. St. Helens form?
charle [14.2K]

Given what we know about volcanic formations, we can conclude that the Mt. St. Helens volcano was formed by the process described in option D, "Subduction  an oceanic continental convergent boundary caused a mountain  range to form and magma to come to the surface".

Mt. St. Helens is a volcano that falls under the category of a stratovolcano. Stratovolcanoes are volcanoes that commonly form at subduction zones. This process forms chains or clusters of mountains along the boundaries of tectonic plates, where oceanic crust is pulled under another type of crust. This process tends to form mountain ranges which contain volcanoes, such as:

  • Cascade Range (To which Mt. St. Helens belongs)
  • Los Andes
  • Rocky Mountains
  • Campania Mountain range

and so on.

To learn more visit:

brainly.com/question/3080956?referrer=searchResults

6 0
3 years ago
A sentence using terminal velocity
pishuonlain [190]
Terminal velocity is when something stops accelerating and just goes at one constant speed so if you put it into a sentence it would be like the rock falling off of the cliff did not accelerate instead it stayed at a terminal velocity
7 0
3 years ago
If there are 1,600 meters in a mile, find the speed of sound in this experiment in units of "miles / hour"
atroni [7]

Answer:

v = 771.75 mile / h

Explanation:

The speed of sound is v = 343 m / s  at T= 20C

the transformation ratios are

     1 mile = 1600 m

     1 h = 3600 s

Let's reduce

    v = 343 m / s (1 mile / 1600 m) (3600 s / 1 h)

    v = 771.75 mile / h

4 0
4 years ago
The exhaust fan on a typical kitchen stove pulls 600 CFM (cubic feet per minute) through the filter. Given that 1.00 in. = 2.54
zysi [14]

Answer:

0.283\ m^3/s

Explanation:

Given that,

1.00 in = 2.54 cm

We know that,

1 feet = 12 inches

1\ feet =12\times0.0254

1\ feet =0.3048\ m

We calculate the number

We need to converted ft^3/min to m^3/sec

The number required is

600ft^3/min = \dfrac{600\times(0.3048)^3}{60}

600ft^3/min=0.283\ m^3/s

Hence, This is the required solution.

4 0
3 years ago
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