Thermal conductors don’t have to be hot to transfer heat. According to Ch.16, explain a situation when an ice cube would still transfer heat to another object it is in contact with.

Answers

Answer 1
Answer:

The law of thermodynamics is that the heat transfers from a hot object to a cold one. This is how the heat gradient goes. An ice can transfer heat when it is in contact with an object which is lower in temperature. For example when ice cube touches an object of temperature -50 degree Celsius.

Answer 2
Answer:

Answer:

Transfer of heat occurs when there is difference in the temperatures of two bodies. The temperature indicates hotness or coldness of a body. With even small difference in temperature, heat transfer occurs from hotter to the colder one till both of them achieve thermal equilibrium.

So, an ice-cube can transfer heat to another ice-cube if its temperature is higher than another. Suppose, the temperature of ice cube 1 is 0°C and another one is at -10°C, heat transfer would occur.


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the resultant resistance of two resistance wires in series combination is 108 ohm and in parallel combination is 24 ohm. find the value of individual resistance

Answers

Call the two resistors 'x' and 'y'.

In series, the resultant resistance is their sum: x + y = 108
Notice that y = 108 - x.  I think we'll use that very soon.

In parallel, the resultant resistance is (their product) / (their sum) = xy/108 = 24

Multiply each side by 108:

xy = 2,592

Substitute for 'y' :

x(108 - x) = 2,592

108x - x² = 2,592

-x² + 108x - 2,592 = 0

x² - 108x + 2,592 = 0

Use the quadratic formula to find:

x = 72 . . . then y = 108 - 72 = 36
or
x = 36 . . . then y = 108 - 36 = 72

The individual resistors are 36Ω  and  72Ω .

If you were to throw flour on the man in the photo, the flour would stick to the man's chest everywhere but on his scar. Why?

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Explanation:

Flour typically sticks to surfaces due to adhesive forces, and it's more likely to stick to areas with moisture or oils on the skin. If the scar on the man's chest lacks moisture or oils (which is common for scars), the flour may have difficulty adhering to that specific area. However, it could stick to the surrounding skin where there might be more moisture or natural oils.

What does the process skill measuring mean?

Answers

Answer:

Process Skills: Observing - using your senses to gather information about an object or event. It is description of what was actually perceived. using standard measures or estimations to describe specific dimensions of an object or event

Explanation:

i hope this isnt confusing

This is the most basic skill in science. Observations are made by using the 5 senses. Good observations are essential in learning the other science process skills.

Examples:

The learner will be blind folded and make observations using the sense of touch.

The learner will create observations about a coin using the 5 senses.

The learner will mix primary colors to create more colors.

L 10. A car with a mass of 2,000 kilograms is moving around a circular curve at a uniform velocity of 25 meters per second. The curve has a radius of 80 meters. What is the centripetal force on the car?

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Centripetal Force, F = mv²/r

Where m = mass in kg, v = velocity in m/s and r = radius of curvature in m.

Centripetal Force, F = 2000 * 25² / 80.    Use your calculator.

                           F = 15 625 N.

What are minerals made of a single element called?

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Minerals of a single element are called Native elements. These include gold, silver, copper, etc. They can be divided into three groups such as metals, semi-metals, and nonmetals. Hope this helped.

The basic skill of advancing and controlling the ball to your feet while running.

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Direct Free Kick
Pass
and Dribbling