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Ne4ueva [31]
3 years ago
5

What is the wavelength of a sound wave with a frequency of 50 hz? (speed of sound is 342 m/s)?

Physics
1 answer:
Scorpion4ik [409]3 years ago
5 0
The answer is 6.84 lamda
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Calculate the gravitational attraction between two objects which masses are: mass A: 2.5kg, mass B: 5kg. The distance between th
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From the calculation, the gravitational force of attraction is  1.33 * 10^-14 N.

<h3>What is the gravitational force?</h3>

The gravitational force is an attractive force that acts between any two masses.

It is given by;

F = Gm1m2/r^2

F = 6.67 * × 10−11 * 2.5 * 5/(250)^2

F  = 83.4  × 10−11 /62500

F= 1.33 * 10^-14 N

Learn more about gravitational force:brainly.com/question/12528243

#SPJ1

4 0
2 years ago
The manufacturer of a 1.5 V D flashlight battery says that the battery will deliver 9 mA for 42 continuous hours. During that ti
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Answer:

The manufacturer of a 9V dry-cell flashlight battery says that the battery will deliver 20 mA for 80 continuous hours. During that time the voltage will drop from 9V to 6V. Assume the drop in voltage is linear with time. How much energy does the battery deliver in this 80 h interval?

Explanation:

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3 years ago
One mole of water is equivalent to 18 grams of water. A glass of water has a mass of 200 g. How many moles of water is this?
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200g*1 mole/ 18g=11.1 moles There are 11.1 moles of water. 
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