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Dmitrij [34]
4 years ago
7

1.Differentiate between heat and temperature. Use an everyday situation to supplement your answer.

Physics
2 answers:
Ivenika [448]4 years ago
4 0

Answer:

Heat is the total energy of molecular motion in a substance, however temperature is simply the measurement of the average energy of motion in that substance. Heat is the energy created by the motion of molecules in the object. Temperature take the average of that kinetic energy and estimates it.

When you cook a steak you can use either a convection oven or a pan to cook it. As the meat absorbs the heat, it cooks within and the temperature rises as it cooks. Once the steak's temperature stops rising, the cooking process stops within the steak. As the steak cooks, the heat also is lost since it has somewhere to go other than the steak. When you finish cooking a steak, you check the temperature to see how well cooked it is. During this time you get an average estimate as to the kinetic energy that took place during the cooking process. When you wait for the steak to cool down, the heat escapes from the substance and in turn the temperature drops. You are now ready to eat your cooked steak.

Explanation:

Temperature is the estimated measurement of the average kinetic energy of molecules in a substance.

Temperature rises when the substance is heated and it falls when that substance is cooled down.

Heat flows from hot to cold, so when Temperature drops, it means that the kinetic energy is dispersed from the substance.

enot [183]4 years ago
3 0

Answer:  Temperature is the average kinetic energy of the molecules (how hot or cold something feels). Heat energy is the energy created y the motion of the molecules in an object. Heat flows from hot body to cold body. Temperature rises when heated and falls down when an object is cooled down.

There are three main scales commonly used in the world today to measure temperature: the Fahrenheit (°F) scale, the Celsius (°C) scale, and the Kelvin (K) scale. Each of these scales uses a different set of divisions based on different reference points, as described in detail below.

Explanation:

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A car travels a distance of 320 km in 4 hours. What is your average speed in meters per second?
Andreas93 [3]

Answer:

22.2 m/s

Explanation:

First, we need to convert km to m by multiplying by 1000. This means that the car traveled 320 000 meters.

Next, we convert hours to minutes by multiplying by 3600 (the number of seconds in an hour). This means that overall, the car traveled 320 000 m in 14 400 seconds.

The average speed can be found by using the equation \frac{distance}{time}. After substitution, this gives the fraction \frac{320 000}{14 400}, which reduces to 22 \frac{2}{9} m/s, or about 22.2 m/s.

4 0
4 years ago
Is a 10 year old supposed to be doing algebra
forsale [732]
If he feels like, is interested in it, and is able to grasp it, then why not ? Why not indeed ?
3 0
3 years ago
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A 14.0 gauge copper wire of diameter 1.628 mm carries a current of 12.0 mA . A) What is the potential difference across a 1.80 m
Serga [27]

Answer: a) 139.4 μV; b) 129.6 μV

Explanation: In order to solve this problem we have to use the Ohm law given by:

V=R*I whre R= ρ *L/A  where ρ;L and A are the resistivity, length and cross section of teh wire.

Then we have:

for cooper R=1.71 *10^-8* 1.8/(0.001628)^2= 11.61 * 10^-3Ω

and for silver R= 1.58 *10^-8* 1.8/(0.001628)^2=10.80 * 10^-3Ω

Finalle we calculate the potential difference (V) for both wires:

Vcooper=11.62* 10^-3* 12 * 10^-3=139.410^-6 V

V silver= 10.80 10^-3* 12 * 10^-3=129.6 10^-6 V

8 0
4 years ago
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A 1750-kilogram cars travels at a constant speed of 15.0 meters per second around a horizontal, circular track with a radius of
bulgar [2K]

m = mass of the car moving in horizontal circle = 1750 kg

v = Constant speed of the car moving in the horizontal circle = 15 m/s

r = radius of the horizontal circular track traced by the car = 45.0 m

F = magnitude of the centripetal force acting on the car

To move in a circle . centripetal force is required which is given as

F = m v²/r

inserting the above values in the formula

F = (1750) (15)²/(45)

F = (1750) (225)/(45)

F = 1750 x 5

F = 8750 N

6 0
3 years ago
C. Move the light bulb back and forth. No matter where the light bulb is located on the central axis, what is always true about
Step2247 [10]

Answer

It will stay the same!

Explanation:

If you so happen to move something from left to right, the size of it is not being shrunk or expanded in any type of way, shape, or form.

6 0
3 years ago
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