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seropon [69]
3 years ago
13

A temperature of 20°C is equal to ? °F.

Physics
2 answers:
Papessa [141]3 years ago
6 0
The answer is 68 F. i hope this helps
-Dominant- [34]3 years ago
4 0

Answer:

68 degree F

Explanation:

The relation between Celcius scale and Fahrenheit scale is given below

(C - 0) / 100 = (F - 32) / 180

20 / 100 = ( F - 32) / 180

180 / 5 = F - 32

36 + 32 = F

F = 68 degree F

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True or False: Chemical energy stored in food cannot be transformed into mechanical energy
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Which one has greater potential energy? An 8 kg rock sitting on a 2.2 m cliff or a 6 kg rock sitting on a 3.2 m cliff.
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Answer: The 6 kg rock sitting on a 3.2 m cliff.

Explanation:

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3 years ago
Which two elements will most likely form an ionic bond? (Click on the periodic table icon to view these elements) krypton and li
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Answer:

Magnesium and Bromine

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sladkih [1.3K]

Answer:

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Explanation:

From the question we are told that

       The  radius of the orbit is  r =  2.3 *10^{4} \ km  = 2.3  *10^{7} \ m

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The kinetic energy of the satellite is mathematically represented as

       KE  =  \frac{1}{2} * mv^2

where v is the speed of the satellite which is mathematically represented as

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substituting this into the equation

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Now the gravitational force of the planet is mathematically represented as

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Where M is the mass of the planet and  m is the mass of the satellite

 Now looking at the formula for KE we see that we can represent it as

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=>    KE  =  \frac{ 1}{2} *F_g * r

substituting values

       KE  =  \frac{ 1}{2} *6600 * 2.3*10^{7}

         KE  =  7.59  *10^{10} \  J

 

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3 years ago
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