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raketka [301]
2 years ago
11

PLEASE HELPP!!! I NEED ANSWERS!!!

Physics
1 answer:
const2013 [10]2 years ago
7 0

Answer:

0.5kg

Explanation:

Using formula f=ma,

6N=mx12m/s^2

6N/(12m/s^2)=m

0.5kg=m

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What volume of lead must be fastened underneath it to sink the wood in calm water so that its top is just even with the water le
astraxan [27]
The bouyancy force is:  

Since the wood-lead system is completely submerged, the bouyancy force 

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 is the volume of 

 the piece of lead and Vb is the volume of the wooden block. The weight of the

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 in equilibrium, the bouyancy force must be equal to the total weight: 

 ĎwgVl + ĎwgVb = ĎlgVl + ĎbgVb 

 now we can solve for the volume of lead: 

 ĎwgVl â’ ĎlgVl = ĎbgVb â’ ĎwgVb 

 Vl(Ďw â’ Ďl) = Vb(Ďb â’ Ďw) 

 Vl =   

 Ďbâ’Ďw 

 Ďwâ’Ďl   

 Vb 

 Now we substitute the values for the density of lead Ďl = 11.3 Ă— 103kg/m3  , 

 the density of the wood and the density of water Ďw = 1000kg/m3 

 . We get: 

 Vl =   

 600â’1000 

 1000â’11300 

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4 0
3 years ago
Helpppppp!!!!
Advocard [28]

Below are the examples of work being done on an object

Carrying a box up a flight of stairs.

Lifting a bag of groceries.

Lifting a rock off the ground.

Pushing a grocery cart through the store.

<h3>Workdone</h3>

Work is said to be done when a force applied moves a distance

Work done = force × distance

Learn more about work done:

brainly.com/question/18762601

5 0
2 years ago
Read 2 more answers
Hydrogen is an example of a<br> 1<br> A.metal<br> B.noble gas<br> C.nonmetal<br> D.metalloid
miskamm [114]

Answer:

Hydrogen is a nonmetal.

Explanation:

To be assure look at the periodic

table and the groups

5 0
3 years ago
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erma4kov [3.2K]

Answer:

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4 0
2 years ago
When tuning a guitar, a musician plays two strings at once. These sound waves overlap and often appear to get louder and softer
Ymorist [56]
It's called ' interference '. 

If the strings are 'in tune' (same frequency) and in phase, then
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If the strings are 'in tune' (same frequency) but out of phase, then
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If the strings are 'out of tune' (different frequencies), then they overlap
to make a sound that's louder at some times and softer at other times.
The louder and softer pattern creates a new sound, called the 'beat'.
Its frequency is the difference in the frequencies of the two strings.
3 0
3 years ago
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