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3 years ago

Are oil and water optically different

Physics

2 answers:

katovenus [111]3 years ago

6 0

Answer:

Yes

Explanation:

Trust me

Vanyuwa [196]3 years ago

3 0

Answer/Explanation:

Yes, water is normally clear, and oil is normally yellow, also water is heavier then oil so when mixed it will slowly separate.

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Mountains forming today due to movement of the plates and mountains forming in the past due to movements of the plates would be

nataly862011 [7]

Answer: d.

Explanation:

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3 years ago

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Which characteristic do all minerals have in common?

Korolek [52]

Answer:

Five Characteristics of a Mineral

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Minerals Are Inorganic. ...

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These are just some examples.

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It has been a hot summer, so when you arrive at a lake, you decide to go for a swim even though it is nighttime. The water is co

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Answer: This is because water has a higher Specific Heat Capacity than air.

Explanation:

The specific heat capacity of an object measures how much heat will be required to change its temperature.

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Since air has a lower Specific Heat Capacity than water, heat from the sun will readily heat it up in comparison to water.

6 0

4 years ago

A truck is hauling a 300-kg log out of a ditch using a winch attached to the back of the truck. Knowing the winch applies a cons

Pie

Answer:

0.128 s

Explanation:

We have to start by calculating the net force acting on the log. We have two forces:

- The constant pulling force, forward, of F = 2500 N

- The frictional force, backward

The frictional force is given by

$F_f = \mu mg$

where

$\mu=0.45$ is the coefficient of friction

m = 300 kg is the mass of the log

$g=9.8 m/s^2$ is the acceleration of gravity

Substituting,

$F_f = (0.45)(300)(9.8)=1323 N$

So the net force acting on the log is

$F=2500 - 1323=1177 N$

Now, we can find the acceleration of the log by using Newton's second law

$F=ma$

where a is the acceleration. Re-arranging for a,

$a=\frac{F}{m}=\frac{1177}{300}=3.92 m/s^2$

And finally we can find the time it takes for the log to reach a speed of

v = 0.5 m/s

by using the suvat equation:

$v=u+at$

where u = 0 is the initial speed and t the time. Solving for t,

$t=\frac{v}{a}=\frac{0.5}{3.92}=0.128 s$

5 0

4 years ago

A horizontal force of 150 N is used to push a 40.0-kg packing crate a distance of 6.00 m on a rough horizontal surface. If the c

icang [17]

Answer:

a. 900 J

b. 0.383

Explanation:

According to the question, the given data is as follows

Horizontal force = 150 N

Packing crate = 40.0 kg

Distance = 6.00 m

Based on the above information

a. The work done by the 150-N force is

$W = F x = \mu N x = \mu\ m\ g\ x$

$W = 150 \times 6$

= 900 J

b. Now the coefficient of kinetic friction between the crate and surface is

$\mu = \frac {F}{m\timesg}$

$= \frac{150}{40\times 9.8}$

= .383

We simply applied the above formulas so that each one part could calculate

3 0

4 years ago