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1 year ago

Methods of Heat Transfer HW

1 answer:

3 0

The given statements are radiation, convection and conduction, all warmness are convection while conduction is cold.

<h3>Briefing :</h3>

Your hand touches the burner on the stove. Radiation

Magma in the earth's mantle heats up and rises, then cools and sinks which causes Earth's tectonic plates to move. Convection

You feel the warmth of the sun on a warm summer day. Radiation

The warm water near the equator moves towards the cold water near the earth's poles. This phenomenon is known as a global ocean current. Convection

You accidentally touch the hot part of the iron. Radiation

The soup on the bottom of a pot heats up by touching the pan. Conduction

Hot soup moves to the top of the pot and cool soup sinks to the bottom. Convection

Your tongue touches a very cold spoon. Conduction

The hot pavement heats up the air directly above it. Convection

The warm air over land, moves towards the cooler air over the ocean which causes a windy breeze. Convection

To know more about earth's mantle :

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According to Maslow's hierarchy of needs, the basic needs are what we call physiological or biological needs. The survival of th

Volgvan

Answer:

True

Explanation:

|ndeed, Psychologist Abraham Maslow's sought to describe hierarchy in which the average (or most) humans place their needs. In other words, he believes we as humans have basic needs which we long to satisfy.

On the ranking or hierarchy, according to Maslow the need humans satisfy first is their physiological need. Here's the full hierarchy:

Physiological Needs

↓

Safety Needs

↓

Love/Belonging Needs

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Esteem Needs

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Self-Actualization

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3 years ago

PLZ HELP ME ASAP!!! 1 which of earths spheres contains most of its mass?

ivann1987 [24]

1. The answer is; C

The geosphere is made up of the physical rocks (composed of metals and minerals) and magma in the different layers. These densities of these rocks surpass those of other spheres such as the atmosphere and hydrosphere.

2. The answer is; B

Destructive forces break down land. Weathering and erosion are categorized as slow destructive forces because they take many years for their effect to be perceptible to the human's scale. Quick destructive forces are forces such as earthquakes and tsunamis.

3. The answer is; B

The atmosphere on earth is mainly composed of molecular nitrogen at 78%. Oxygen takes up 21% and other gases found in the atmosphere are hydrogen, carbon dioxide,ozone, dust, and water vapor at 1%.

4. The answers that apply are ; A & B

The formula for gravity force is given by the equation.; F(gravity) = (G*m1*m2)/d^2 where G is the gravitational constant, m1 and m2 are the masses of the two objects, and d is the distance between them.

5. The answer is; C

The force of inertia is due to their celestial mass. The larger the mass the higher the inertia. Inertia is the tendency of a moving object to maintain a straight path without an external force applied to it. This, therefore, prevents the moon from being pulled into collision with the earth. Gravity, on the other hand, prevents the moon from flying out of its orbit and away into space.

7 0

3 years ago

Cesium has a radius of 272 pm and crystallizes in a body-centered cubic structure. What is the edge length of the unit cell

olchik [2.2K]

Answer: Edge length of the unit cell = 628pm

Explanation: For a body centred cubic structured system, the relationship between the edge length of the unit cell and radius of the atoms in the structure is

Edge length of Unit cell (a) = (4R)/(√3)

R = 272pm = (272 × (10^-12))m = (2.72 × (10^-10))m

a = (4 × (2.72 × (10^-10)))/(√3)

a = (6.28157 × (10^-10))m = 628pm

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3 years ago

If the strength of the magnetic field at B is 10 units, the strength of the magnetic field at A is _____.

Sergeeva-Olga [200]

The answer is 40 units.

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3 years ago

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How many sigma and pi bonds, respectively, are in the molecule below? ch3ch2chchch3?

klio [65]

14 sigma bonds, 1 pi bond

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4 years ago