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2 years ago

Calculate the volume of a liquid with a density of 5.45 g/ml and a mass of 65g

Physics

1 answer:

katrin [286]2 years ago

5 0

Density=mass/volume
5.45g/ml=65g/V
V=65g/5.42g/ml
V=11.92ml

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kramer

320 Kilometers = 198.8 miles
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2 years ago

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Which of the following statements are true about an ideal solution of two volatile liquids? A. The partial pressure of each comp

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the correct choices are

A. The partial pressure of each component above the liquid is given by Raoult's law

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a 1150 kg car is on a 8.70 hill. using x-y axis tilted down the plane, what is the x-component of the normal force(unit=N)

rodikova [14]

The x-component of the normal force is equal to 1706.45 N.

Why?

To solve the problem, and since there is no additional information, we can safely assume that the x-axis is parallalel to the hill surface and the y-axis is perpendicular to the x-axis. Knowing that, we can calculate the components of the normal force (or weight for this case), using the following formulas:

$N_{x}=W*Sin(\alpha)=mg*Sin(\alpha)\\\\N_{y}=W*Cos(\alpha)=mg*Cos(\alpha)$

Now, using the given information, we have:

$mass=m=1150Kg\\\alpha=8.70\°\\g=9.81\frac{m}{s^{2}}$

Calculating, we have:

$N_{x}=mg*Sin(\alpha)$

$N_{x}=1150Kg*9.81\frac{m}{s^{2}}*Sin(8.70\°)\\\\N_{x}=11281.5\frac{Kg.m}{s^{2} }*Sin(8.70\°)=1706.45\frac{Kg.m}{s^{2} }=1706.45.23N$

Hence, we have that the x-component of the normal force is equal to 1706.45 N.

Have a nice day!

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2 years ago

Venus has an average distance to the sun of 0.723 AU. In two or more complete sentences, explain how to calculate the orbital pe

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For this task we need to use Kepler's third law:

T = 2*pi* $\sqrt{ \frac{ r^{3}}{G*M} }$

where T is orbital period in seconds, r is Venus's semi-major axis, G is gravitational constant and M is mass of the sun.

Distance from earth to sun is 1AU so if we know earths period and distance from the sun we can calculate Venus period.
Te-earths period
Tv-venus period

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From the text we know that Re/Rv = 1/0.723

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2 years ago

A ball is thrown downward at 5ms from roof 10m high its velocity when it reaches the ground is?,

lions [1.4K]

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2 years ago