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konstantin123 [22]
3 years ago
10

Explain the molecular concept of thermal energy.

Physics
1 answer:
MAVERICK [17]3 years ago
7 0

Answer:

The temperature of an object increases when the molecules that make up that object move faster. Thermal energy is energy possessed by an object or system due to the movement of particles within the object or the system.

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Using the work energy theorem. What is the velocity of a 850kg car after starting at rest when 13,000J of work is done to it.
Misha Larkins [42]

When the car starts moving it acquires kinetic energy.

For this problem the formula of kinetic energy is:

\frac{1}{2}mv^2

Where m is the mass of the car = 850kg, and v is the speed of the car.

If we consider insignificant the energy lost by friction with soil and air we can propose the following equation:

Applied energy = Kinetic energy acquired by the car.

13000\ J = \frac{1}{2}mv^2\\\\13000\ J = \frac{1}{2}(850)v^2\\\\\frac{13000(2)}{850} = v^2\\\\v = \sqrt{\frac{13000(2)}{850}}\\\\v = 5.531 m/s

The velocity is 5.531 m/s

3 0
3 years ago
Which of the following objects will have the greatest inertia?
max2010maxim [7]

Answer:

The proximate answer pertaining to your question entails 10 kg.

Justification:

The statement implies which of the following units preceded by the value of 10 will obtain substantial inertia.

Exploiting conversions, this can be evinced/demonstrated:

Choice "10 m" => .01 kg

10 J ==> 0.10

10 N ==> 1.02 kg

10 kg  ==>  10 kg

Thus, an object obtaining a cumulative mass of 10 kg obtains substantial inertia.

<h3>*Hope this helps*</h3>
6 0
2 years ago
marissas car accelerates uniformly at a rate of -2.60m/s^2. how long does it take for marissas car to accelerate from a velocity
zlopas [31]

Answer:

1.02s

Explanation:

In this situation the following equation will be useful:



Where:

 is Marissa's car  final velocity

 is Marissa's car initial velocity

 is Marissa's car constant acceleration  (assuming this is the acceleration, since 1269 m/s^{2} does not make sense)

 is the time  it takes to accelerato from  to 

7 0
2 years ago
Need help with this worksheet. Very short
attashe74 [19]

Answer:

In the grapher: The stops are marked with a flat line, velocity with a diagonal line, and acceleration with a curve.

Average speed= Total distance/Total time

Explanation:

6 0
3 years ago
Calculate The pressure produced by a force of 392 N acting on an area of 8.0 m^2
Nonamiya [84]

Answer:

Explanation:

500-0.05=499.95

500-100+5=405

100+100=10000

5 0
2 years ago
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