3 years ago

Will an object with a density of 1.05 g/ml float or sink in water? Explain.

Physics

1 answer:

WINSTONCH [101]3 years ago

7 0

It will sink because it is heavier. The density of water 1.00 g/ml

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A 500kg car skids to a stop at a traffic light, leaving behind a 18.25m skid mark as it comes to a rest. Assuming that the car i

Nastasia [14]

Answer:

Coefficient of friction will be 0.587

Explanation:

We have given mass of the car m = 500 kg

Distance s = 18.25 m

Initial velocity of the car u = 14.5 m/sec

As the car finally stops so final velocity v = 0 m/sec

From second equation of motion

$v^2=u^2+2as$

$0^2=14.5^2+2\times a\times 18.25$

$a=-5.76m/sec^2$

We know that acceleration is given by

$a=\mu g$

$5.76=\mu\times 9.81$

$\mu =0.587$

So coefficient of friction will be 0.587

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3 years ago

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Answer:

Explanation:

A. Using

Sinစ= y/ L = 0.013/2.7= 0.00481

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B.here we use

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= π x (0.0351)sin(0.28)/588E-9m

= 9.1*10^-2rad

C.we use

I(စ)/Im= (sin alpha/alpha) ²

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