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3 years ago

How are reflectivity and solubility related?

Physics

2 answers:

ser-zykov [4K]3 years ago

5 0

He or she said bc i searched it up and they right

Lubov Fominskaja [6]3 years ago

4 0

Answer:

they are related because..

Explanation:

Physical properties can be observed or measured without changing the composition of matter. Physical properties include: appearance, texture, color, odor, melting point, boiling point, density, solubility, polarity, and many others

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An airplane is traveling from North Africa to England. Which arrow correctly shows the direction gravity pulls the plane?

solniwko [45]

Given that,

The attached figure shows an airplane is traveling from North Africa to England.

To find,

The arrow that shows the direction gravity pulls the plane.

Solution,

The force of gravity always acts in the downward direction, The weight of an object is given by :

W = mg

Arrow 2 shows the direction of gravitational pull.

8 0

3 years ago

A box contains about 5.54 1021 hydrogen

Aleks [24]

Answer: $E=33.71\ J$

Explanation:

Given

No of atoms of hydrogen $N=5.54\times 10^{21}$

Temperature of room $T=21^{\circ}\approx 294\ K$

Thermal energy of the atoms is given by

$E=\frac{3}{2}NkT$

where k=boltzmann constant

$E=\frac{3}{2}\times 5.54\times 10^{21}\times 1.38\times 10^{-23}\times 294$

$E=33.71\ J$

Hence the energy of the atoms is $33.71\ J$

5 0

3 years ago

The star Rho1 Cancri is 57 light-years from the earth and has a mass 0.85 times that of our sun. A planet has been detected in a

s344n2d4d5 [400]

Answer:

82780.42123 m/s

14.45 days

Explanation:

m = Mass of the planet

M = Mass of the star = $0.85\times 1.989\times 10^{30}\ kg=1.69065\times 10^{30}\ kg$

r = Radius of orbit of planet = $0.11\times 149.6\times 10^{9}\ m=16.456\times 10^{9}\ m$

v = Orbital speed

The kinetic and potential energy balance is given by

$\frac{GMm}{r^2}=\frac{mv^2}{r}\\\Rightarrow v=\sqrt{\dfrac{Gm}{r}}\\\Rightarrow v=\sqrt{\dfrac{6.67\times 10^{-11}\times 1.69065\times 10^{30}}{16.456\times 10^{9}}}\\\Rightarrow v=82780.42123\ m/s$

The orbital speed of the star is 82780.42123 m/s

The orbital period is given by

$t=\frac{2\pi r}{v}\\\Rightarrow t=\dfrac{2\pi \times 16.456\times 10^{9}}{82780.42123}\\\Rightarrow t=1249040.48419\ seconds=\dfrac{1249040.48419}{24\times 60\times 60}=14.45\ days$

The orbital period is 14.45 days

5 0

3 years ago

3.) What is the velocity of a 5.5 kg object that has a momentum of 550 kg-m/s?

stepladder [879]

Answer:

idk

Explanation:

8 0

3 years ago

Assume that each cubic centimeter of water has a mass of exactly 1.00 g. what is the mass of one cubic meter of water in kilogra

statuscvo [17]

The mass of one cubic meter of water in kilograms is 1 kg.

This is a conversions case. First, we must determine how many cubic centimeters there are in a cubic meter. We have 1000 of these after conversion.

This essentially indicates that 1000 units of water, each with a volume of one cubic centimeter, would have to combine before we could create a cubic meter of water.

Knowing that one cubic centimeter weighs one gram, 1000 cubic centimeters would weigh 1000 * 1, or 1000g, or one kilogram.

Thus, 1 cubic meters of water will weigh 1 * 1000g = 1000g, or just 1 kg.

Learn more about the Measurement of mass with the help of the given link:

brainly.com/question/13730160

#SPJ4

4 0

1 year ago