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Anna [14]
3 years ago
11

A weather forecaster uses a computational model on a Monday to predict the weather on Friday. Why might that forecast change? (1

point)
A. The forecaster may have done the calculations a second time because he made a mistake in the calculation.

B. Someone may have reported the weather incorrectly before the first computation.

C. The forecaster may have had the computer model do the calculations a second time, and he found that the prediction changed.


D. An area of low pressure might move more quickly on Tuesday and Wednesday than expected.
Physics
1 answer:
grandymaker [24]3 years ago
7 0

Answer:

(d) is your answer for your question

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The blades of a metal cutter are shorter than the blades of paper cutter scissor. Give reason​
Sladkaya [172]

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Metal is a tougher material to cut though, so the blades must be shorter to create more pressure to break through the metal. Paper on the other hand is easier to cut through so the blades can be longer in order to cut more in each snip.

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A solenoid with 3,000.0 turns is 70.0 cm long. If its self-inductance is 25.0 mH, what is its radius? (The value of μ0 is 4π x 1
nevsk [136]

Answer:

A. 2.2*10^-2m

Explanation:

Using

Area = length x L/ uo xN²

So A = 0.7m * 25 x 10^-3H /( 4π x10^-7*

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A = 17.5*10^-3/ 1.13*10^-5

= 15.5*10^-2m²

Area= π r ²

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Explanation:

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3 years ago
What is the importance of time ?
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8 0
3 years ago
How much heat is needed to raise the temperature of 2 kg of copper from 20º to 30ºC. The specific heat of copper is 390 J/kgºC.
ryzh [129]

Answer:

7800 J

Explanation:

Heat needed = mass of copper x specific heat of copper x change in temperature  

Change in temperature = 30ºC - 20ºC = 10ºC

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Substituting the given values in above equation, we get –  

Heat needed = 2 Kg x 390 J/kgºC x 10ºC

= 7800 J

3 0
4 years ago
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