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2 years ago

The weather is warm and dry what changes would a cold front bring

Physics

2 answers:

MissTica2 years ago

8 0

A cold front separates a cold, dry air mass from a warm air mass.

FinnZ [79.3K]2 years ago

7 0

Before a cold front comes:The temperature will be warm.
There will be short rain showers.
During a cold front:The temperature will decrease and become cold.
There will be heavy rain with hail, thunder, and lightning.
After a cold front has passed:The temperature will continue to drop.
The rain will stop and the skies will clear.

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If the fundamental frequency of a musical instrument is 42Hz, what is the frequency of the second harmonic?

timurjin [86]

For the majority of instruments f = n f0 where f is the resonating frequency, n is any whole number and f0 is the fundamental.
This applies to trumpets, violins, flutes and a broad range. 
In such a case the first harmonic would be at n=1 and the second harmonic would be at n=2 

which gives a frequency of 84 Hz

7 0

2 years ago

Help please. Will give brainliest

solmaris [256]

Answer:

Your answer would be:
B.) Both carry energy in the form of vibration

Explanation:

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1 year ago

A 30.0 kg child, initially at rest, slides down a 2.0 m tall slide. The child reaches the bottom of the slide with a speed of 6

HACTEHA [7]

Answer:

Explanation:

Total energy is constant

E = mgh + ½mv² + Fd

At the top of the slide, all energy is potential

E = mgh + 0 + 0

At the bottom of the slide, all potential energy has converted to kinetic and work of friction.

mgh = ½mv² + W

W = mgh - ½mv²

W = 30.0[(9.81)(2.0) - ½6²]

W = 48.6 J

5 0

2 years ago

Calculate the individual positive plate capacity in motive power cell that has 15 plates and a copa of 595 Ah A. 110 Ah B. 75 Ah

Sphinxa [80]

Answer:

The individual positive plate capacity is 85 Ah.

(D) is correct option.

Explanation:

Given that,

Number of plates = 15

Capacity = 595 Ah

We need to calculate the individual positive plate capacity in motive power cell

We have,

15 plates means 7 will make pair of positive and negative.

So, there are 7 positive cells individually.

The capacity will be

$capacity =\dfrac{power}{number\ of\ cells}$

Put the value into the formula

$capacity =\dfrac{595}{7}$

$capacity =85\ Ah$

Hence, The individual positive plate capacity is 85 Ah.

6 0

3 years ago

Read 2 more answers

If a car traveled 60 m in 30 s, what is the velocity?*

klemol [59]

Answer:

6.56168

Explanation:

8 0

2 years ago