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Lady bird [3.3K]
4 years ago
14

Determine the kinetic energy of a 1000 kg roller coaster car that is moving with a speed of 20.0 m/s

Physics
2 answers:
Ksenya-84 [330]4 years ago
8 0
<span>mechanical energy m8</span>
Tamiku [17]4 years ago
5 0
Mechanical energy? ? ?
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[C]utting programs that were not effective or essential and even some that were, but are now unaffordable; and precisely targeti
zalisa [80]

Option B i.e discretion is the right and correct answer.

[C]utting programs that were not effective or essential and even some that were, but are now unaffordable; and precisely targeting our investments. Every department will feel the impact of these reductions as they cut programs or tighten their belts to free up more resources for areas critical to economic growth. —President Barack Obama, 2012 Budget Message of the President.

The President above clearly refers to the Discretion Spending where portion of the budget is decided by Congress through the annual appropriations.

3 0
3 years ago
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What is the average kinetic energy of helium atoms in a region of the solar corona where the temperature is 5.90 x 10^5 K?
OLEGan [10]

<u>Answer:</u> The average kinetic energy of helium atoms is 1.222\times 10^{-17}J

<u>Explanation:</u>

To calculate the average kinetic energy of the atom, we use the equation:

K=\frac{3}{2}kT

where,

K = average kinetic energy = ?

k = Boltzmann constant = 1.3807\times 10^{-23}J/K

T = temperature = 5.9\times 10^5K

Putting values in above equation, we get:

K=\frac{3}{2}\times 1.3807\times 10^{-23}J/K\times 5.9\times 10^5K\\\\K=1.222\times 10^{-17}J

Hence, the average kinetic energy of helium atoms is 1.222\times 10^{-17}J

4 0
3 years ago
What is science <br><br><img src="https://tex.z-dn.net/?f=1%20%2B%202%20%3D%203" id="TexFormula1" title="1 + 2 = 3" alt="1 + 2 =
11Alexandr11 [23.1K]

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7 0
3 years ago
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At an amusement park there is a ride in which cylindrically shaped chambers spin around a central axis. People sit in seats faci
siniylev [52]

Answer:

r = 1.86 m

Explanation:

Here the force due to wall of the cylinder is towards the axis of the cylinder

This force will act as centripetal force for the people sit inside the chamber

now we will have

F_c = \frac{mv^2}{R}

now we will have

F_c = 488 N

m = 84.4 kg

v = 3.28 m/s

now we have

488 = \frac{84.4(3.28)^2}{r}

now we have

r = 1.86 m

8 0
3 years ago
1. Which segment on this position vs time graph represents the object returning back to the origin?
Monica [59]

9514 1404 393

Answer:

  D. Segment D

Explanation:

The origin is represented on the graph by the position (y-value) being 0. The portion of the graph that shows position being non-zero and ending at 0 is the portion marked <em>segment D</em>.

5 0
3 years ago
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