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Kay [80]
3 years ago
8

A sample of a gas is expanded to twice its original volume while its temperature is held constant. Relative to their original av

erage energy, the new average energy of the molecules is
Physics
1 answer:
aleksley [76]3 years ago
4 0

Answer:

Lesser as it drops based on increase in volume

Explanation:

Kinetic Energy is directly proportional to temperature. so since the temperature is held constant and volume increased, Temperature would drop and kinetic energy would reduce

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Determination of Thermal Conductivity. In determining the thermal conductivity of an insulating material, the temperatures were
Goshia [24]

Answer:

k=0.0577w/mk

k=0.03338BTU/h-ft-ºF

Explanation:

First we use the equation for heat transfer by conduction and solve for K

Q=KA(T2-T1)/x

Where

q=heat

A=area

T=temperature

K=conductivity

x=thickness

solving for k

k=Qx/A(T2-T1)

Q/A=Heat flux=q

k=qx/(T2-T1)

k=35.1*0.025/(318.4-303.2)

K=0.0577w/mk

remember that 1 btu / hftk equals 1,729 w / mk

K=0.0577/1.729=0.03338BTU/h-ft-ºF

3 0
3 years ago
Genes provide For a cell to assemble molecules that express traits such as eye color of seed shape
Shalnov [3]
<h3><u>Answer;</u></h3>

Directions

Genes provide <u>directions</u> for a cell to assemble molecules that express traits such as eye color of seed shape.

<h3><u>Explanation;</u></h3>
  • <em><u>A gene is a segment of DNA on a chromosome that codes for a specific trait. It is the set of information that controls a given trait.</u></em>
  • Each gene occupies a specific position on a chromosome. Genes are responsible for characteristics inherited by an individual from the parents,because genes provide instructions for making proteins, and proteins determine the structure and function of each cell in the body.
5 0
3 years ago
A car with a mass of 1900 kg has a force of 475 N. What is the acceleration of the car?
velikii [3]

Answer:

<h2>0.25 m/s²</h2>

Explanation:

The acceleration of an object given it's mass and the force acting on it can be found by using the formula

a =  \frac{f}{m} \\

f is the force

m is the mass

From the question we have

a =  \frac{475}{1900}  = 0.25 \\

We have the final answer as

<h3>0.25 m/s²</h3>

Hope this helps you

7 0
2 years ago
"a grindstone of radius 4.0 m is initially spinning with an angular speed of 8.0 rad/s. the angular speed is then increased to 1
kotegsom [21]

The average angular speed of the grindstone is 10 rad/s

\texttt{ }

<h3>Further explanation</h3>

<em>Let's recall </em><em>Angular Speed</em><em> formula as follows:</em>

\boxed{ \omega = \omega_o + \alpha t }

\boxed{ \theta = \omega_o t + \frac{1}{2} \alpha t^2 }

\boxed{ \omega^2 = \omega_o^2 + 2 \alpha \theta }

\boxed{ \theta = \frac{( \omega + \omega_o )}{2} t }

<em>where :</em>

<em>ω = final angular speed ( rad/s )</em>

<em>ω₀ = initial angular speed ( rad/s )</em>

<em>α = angular acceleration ( rad/s² )</em>

<em>t = elapsed time ( s )</em>

<em>θ = angular displacement ( rad )</em>

\texttt{ }

<u>Given:</u>

radius of the grindstone = R = 4.0 m

initial angular speed = ω₀ = 8.0 rad/s

final angular speed = ω = 12 rad/s

elapsed time = t = 4.0 seconds

<u>Asked:</u>

average angular speed = ?

<u>Solution:</u>

<em>Firstly , we will calculate </em><em>angular displacement </em><em>as follows:</em>

\theta = \frac{( \omega + \omega_o )}{2} t

\theta = \frac{ ( 12 + 8.0 ) }{2} \times 4.0

\theta = 10 \times 4.0

\boxed {\theta = 40 \texttt{ rad}}

\texttt{ }

<em>Next , we could calculate the </em><em>average angular speed</em><em> as follows:</em>

\texttt{average angular speed} = \theta \div t

\texttt{average angular speed} = 40 \div 4.0

\boxed{\texttt{average angular speed} = 10 \texttt{ rad/s}}

\texttt{ }

<h3>Learn more</h3>
  • Impacts of Gravity : brainly.com/question/5330244
  • Effect of Earth’s Gravity on Objects : brainly.com/question/8844454
  • The Acceleration Due To Gravity : brainly.com/question/4189441
  • Moment of Inertia : brainly.com/question/13796477
  • The Ratio of the Moments of Inertia : brainly.com/question/2176655

\texttt{ }

<h3>Answer details</h3>

Grade: High School

Subject: Physics

Chapter: Rotational Dynamics

4 0
3 years ago
Read 2 more answers
Four weather satellites are orbiting the Earth at a height of 825 kilometers. Some characteristics of the satellites are shown i
ratelena [41]

Answer:

D

Explanation:

The gravitational force between any two objects is affected by the masses of the objects and the distance between them. The greater the masses of the objects are, the stronger the gravitational force is.

Since all four of the satellites are the same distance from the Earth's surface, only their masses affect the strength of the gravitational force. At 903 kilograms, satellite D has the greatest mass, so the gravitational force pulling it toward the Earth is the greatest.

4 0
3 years ago
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