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Ilya [14]
3 years ago
14

If the Lifted Index is positive, is the parcel warmer than, the same temperature as, or cooler than its environment?

Physics
1 answer:
OLga [1]3 years ago
8 0

Answer:

A positive lifted index means that a parcel of air, if lifted, would be COLDER than the surrounding air at 500mb. The air is, therefore, stable and would resist vertical motion. Large positive values (+8) would normally indicate very stable air.

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If an object with a mass of 248kg is lifted 76 meters in 18 seconds, how much power is used?
Jlenok [28]

Explanation:

power = 1/2 mass × velocity^2 >>1

velocity = distance / time = 76 /18 = 4.2m

then power = 1/2 × 276 × (4.2)^2 = 138 × 17.64 = 2,434.3 jules.

3 0
3 years ago
Three 10-cm-long rods form an equilateral triangle. Two of the rods are charged to + 19 nC, the third to - 19 nC.What is the ele
Sveta_85 [38]
<span>We calculate the electric field as follows:
r = </span>√<span>(3)/6 x 19 cm = .05484 m 
The angle for the triangle would be 30 on each side.
tan(30) = r/(L/2) 

E' = kQ/{r*sqrt[(L/2)^2 + r^2]} = (8.99e9 x 15e-9) / {.05484 * sqrt[(.19/2)^2 + .003]}
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The value above is the electric field strength for a single rod at the center. 

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5 0
3 years ago
We showed that the length of the pendulum of period 2.000 seconds on the Earth’s surface was 0.99396 meters. What period would t
Kitty [74]

To solve this problem it is necessary to apply the concepts related to the Period based on gravity and length.

Mathematically this concept can be expressed as

T= 2\pi \sqrt{\frac{l}{g}}

Where,

l = Length

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First we will find the period that with the characteristics presented can be given on Mars and then we can find the length of the pendulum at the desired time.

The period on Mars with the given length of 0.99396m and the gravity of the moon (approximately 1.62m / s ^ 2) will be

T= 2\pi \sqrt{\frac{l}{g}}

T= 2\pi \sqrt{\frac{0.99396}{1.62}}

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For the second question posed, it would be to find the length so that the period is 2 seconds, that is:

T= 2\pi \sqrt{\frac{l}{g}}

2= 2\pi \sqrt{\frac{l}{1.62}}

l = 0.16414m

Therefore, we can observe also that the shorter distance would be the period compared to the first result given.

8 0
3 years ago
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klio [65]

the answer is 5 m up AKA "B"

6 0
4 years ago
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Gekata [30.6K]
When a spoon is in a cup of water, is called refraction.
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