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Basile [38]
3 years ago
12

In an experiment, 50 g of each material were placed in a calorimeter with the same starting water volume and temperature. Which

is the best interpretation of the chart? Lead has the highest specific heat of the four materials shown. The energy transferred and type of material are inversely proportional to each other. Different materials have different abilities to transfer energy. Mass and type of material are proportional.
Physics
2 answers:
Westkost [7]3 years ago
8 0

Answer:

its c

Explanation:

i got it right on edu

eimsori [14]3 years ago
3 0

Answer:it’s different materials have different abilities to transfer energy.

Explanation:

Just took it.

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A satellite that goes around the earth once every 24 hours iscalled a geosynchronous satellite. If a geosynchronoussatellite is
alexgriva [62]

Answer:

R=4.22*10⁴km

Explanation:

The tangential speed v of the geosynchronous satellite is given by:

v=\frac{2\pi R}{T}

Because 2\pi R is the circumference length (the distance traveled) and T is the period (the interval of time).

Now, we know that the centripetal force of an object undergoing uniform circular motion is given by:

F_c=\frac{mv^{2} }{R}

If we substitute the expression for v in this formula, we get:

F_c=\frac{m(\frac{2\pi R}{T})^{2}}{R}=\frac{4m\pi ^{2}R}{T^{2}}

Since the centripetal force is the gravitational force F_g between the satellite and the Earth, we know that:

F_g=\frac{GMm}{R^{2}}\\\\\implies \frac{GMm}{R^{2}}=\frac{4m\pi ^{2}R}{T^{2}}\\\\R^{3}=\frac{GMT^{2}}{4\pi^{2}} \\\\R=\sqrt[3]{\frac{GMT^{2}}{4\pi^{2}} }

Where G is the gravitational constant (G=6.67*10^{-11} Nm^{2}/kg^{2}) and M is the mass of the Earth (M=5.97*10^{24}kg). Since the period of the geosynchronous satellite is 24 hours (equivalent to 86400 seconds), we finally can compute the radius of the satellite:

R=\sqrt[3]{\frac{(6.67*10^{-11}Nm^{2}/kg^{2})(5.97*10^{24}kg)(86400s)^{2}}{4\pi^{2}}}\\\\R=4.22*10^{7}m=4.22*10^{4}km

This means that the radius of the orbit of a geosynchronous satellite that circles the earth is 4.22*10⁴km.

5 0
3 years ago
g is incident on 3 successive sheets of polarizing material. The transmission axis of the first sheet is vertical. The transmiss
murzikaleks [220]

Answer:

The intensity of light passing from the third polarizer is 3Io/16.

Explanation:

The law of Malus is given by

I=I_o cos^2\theta

Let the incident intensity of light is Io.

The intensity of light passing from the first polarizer is

I' = \frac{I_o}{2}

The intensity of light passing from the second polarizer is

I''=\frac{I_o}{2}\times cos^230 =\frac{3I_o}{8}

The intensity of light passing from the third polarizer is

I''' = \frac{3I_o}{8}\times cos^2 60\\\\\\I''' = \frac{3I_o}{16}

6 0
3 years ago
A slingshot is used to shoot a small ball upward into the air; when the pouch is released, the sling propels the ball upward. as
alexdok [17]

Explanation:

kinetic to gravitational

4 0
3 years ago
What keeps the particles of a liquid from spreading out to fill an entire container in the same way that gas particles do?
Sonbull [250]

b. the forces of attraction among them limit their motion.


7 0
3 years ago
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Skin is the main barrier between internal organs and the outside environment. The outer layer of skin is composed mostly of epit
vagabundo [1.1K]
The characteristic of epithelial cells that makes them ideal for providing this type of protection is that the cells are packed tightly together. 
Skin, the body's largest organ,is our first and best defense against external aggressors. The many layers work hard to protect us, however when its condition is compromised, its ability to work as an effective barrier is impaired. 
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3 years ago
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