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3 years ago

How are compounds and mixture alike ?

1 answer:

6 0

Compounds are atoms or molecules that are chemically bonded together to form a different molecule or compound. The process could be written as a chemical reaction. A mixture is when two elements or compounds are mixed together but do not react, ie no chemical reaction between the two occurs.

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As dry air rises, it expands, and this causes it to cool about 1 degree Celsius for every 100 meter rise, up to a height of 12 K

defon

Answer: T = G - H/100

T= 12 - 12000/100 = 12 - 120 = - 105 degrees

Explanation:

T = G - H/100

T is temperature in centigrade degrees.

G is the temperature in centigrade degrees at ground level.

H is the height above ground level measured in meters.

assuming the temperature at ground level is 15 degrees centigrade, then G = 15.

the formula then becomes:

T = 15- H/100.

at ground level, H = 0 and the formula becomes 15 - 0/100 = 15 degrees centigrade.

at 100 meters, H = 100 and the formula becomes 15 - 100/100 = 15 - 1 = 14 degrees centigrade.

at 12 km above ground level, H = 12000 and the formula becomes 15 - 12000/ 100 = 15 - 120 = -105 degrees centigrade.

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3 years ago

What is the average salary for the following careers?

Dennis_Churaev [7]

1. $85047
2. $113,080
3. $ 75,820
4. $41595

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2 years ago

Read 2 more answers

A thin rod of length 0.83 m and mass 110 g is suspended freely from one end. It is pulled to one side and then allowed to swing

VARVARA [1.3K]

Explanation:

(a) The given data is as follows.

Length of the rod, L = 0.83 m

Mass of the rod, m = 110 g = 0.11 (as 1 kg = 1000 g)

At the lowest point, angular speed of the rod ( $\omega$ ) = 5.71 rad/s

First, we will calculate the rotational inertia of the rod about an axis passing through its fixed end is as follows.

I = $I_{CM} + mh^{2}$

= $\frac{1}{12}mL^{2} + m(\frac{L}{2})$

= $\frac{1}{12} \times 0.11 \times (0.83)^{2} + 0.11 \times \frac{0.83}{2}$

= 0.00631 + 0.415

= 0.42131 $kg m^{2}$

Therefore, kinetic energy of the rod at its lowest point will be calculated as follows.

K = $\frac{1}{2}I \omega^{2}$

= $\frac{1}{2} \times 0.42131 kg m^{2} \times (5.71)^{2}$

= 6.86 J

Hence, kinetic energy of the rod at its lowest point is 6.86 J.

(b) According to the conservation of total mechanical energy of the rod, we have

$K_{i} + U_{i} = K_{f} + U_{f}$

$K_{i} = U_{f} - U_{i}$

or, mgh = K = 6.86 J

Therefore, h = $\frac{6.86}{mg}$

= $\frac{0.63}{0.11 \times 9.8}$

= 0.584 m

Hence, the center of mass rises 0.584 m far above that position.

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3 years ago

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Which of the following industries is the largest producer of primary air pollutants in the United States?

masya89 [10]

The largest producer of primary air pollution in the United States is what? electricity producing plants.

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2 years ago

Which image depicts projectile motion?

Elis [28]

Answer:

the answer is the second one

Explanation:

the person is moving through the air while the other people are either not moving forward or backwards or on the ground with full controll over where they go

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3 years ago

Read 2 more answers