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stepladder [879]
2 years ago
10

AAAAAAAAAH

Physics
2 answers:
stiv31 [10]2 years ago
7 0

Answer:

II only

Explanation:

For heat to flow from one object to another, there must be a temperature difference between them. Temperature is a measure hotness or coldness of an object or a body.

An object consists of vibrating molecules, thus molecular kinetic energy. The measure of the average kinetic energy of an object is its temperature. Thus, when object A has higher temperature (hotter) than B, heat would flow from A to B.

Dimas [21]2 years ago
4 0

Answer:

l and lll

Explanation:

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Approximately how much air is in a column 1-cm2 in cross section that extends from sea level to the top of the atmosphere?
laila [671]

Approximately 101 N air is in a column 1-cm2 in cross-section that extends from sea level to the top of the atmosphere

The basic level for determining height and depth on Earth is the sea level. The ocean's surface tends to seek the same level since it is one continuous body of water. However, the sea level is never fully level due to winds, currents, river discharges, and changes in gravity and temperature.

At the equator, the radius of the Earth at sea level is 6378.137 km (3963.191 mi). At the poles, it is 6,356.752 km (3,949.903 km), and on average, it is 6,371.001 km (3,958.756 mi). The elevation of the shoreline—the boundary between the ocean and the land—is referred to as sea level. Land that is higher than this altitude is above sea level, and land that is lower is below sea level.

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8 0
2 years ago
Which energy transformation occurs when an electrolytic cell is in operation.
hodyreva [135]

Answer:

An electrolytic cell converts electrical energy into chemical energy.

Explanation:

7 0
2 years ago
What is the maximum angular momentum Lmax that an electron with principal quantum number n = 2 can have? Express your answer in
butalik [34]

Answer:

L_{max} = 1.414 ℏ

Given:

Principle quantum number, n = 2

Solution:

To calculate the maximum angular momentum, L_{max}, we have:

L_{max} = \sqrt {l(1 + l)}                              (1)

where,

l = azimuthal quantum number or angular momentum quantum number

Also,

n = 1 + l

2 = 1 + l

l = 1

Now,

Using the value of l = 1 in eqn (1), we get:

L_{max} = \sqrt {1(1 + 1)} = \sqrt 2

L_{max} = 1.414 ℏ

4 0
3 years ago
Why does it take double the applied force to move a mass double the size?
Ratling [72]
56-999999999999999999999-4 is the best for my mom
5 0
2 years ago
A brush fire is burning on a rock ledge on one side of a ravine that is 25 m wide. A fire truck sits on the opposite side of the
Ierofanga [76]

Answer:

v_o = 30.5 m/s

Explanation:

Height of the hose pipe is given as

y = 4.5 m

horizontal distance is given as

x = 25 m

angle of elevation is given as 35 degree with the horizontal

now we know that the horizontal distance moved is given as

x = (v_ocos35) t

y = 4.5 + (v_o sin35) t - \frac{1}{2}(9.8)t^2

now we have

25 = v_o(0.82)t

also we have

0 = 4.5 + 0.57 v_o t - 4.9 t^2

0 = 4.5 + (0.57)(0.82) - 4.9 t^2

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v_o = 30.5 m/s

8 0
2 years ago
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