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Alenkasestr [34]
3 years ago
15

1. What conditions must exist in order for a force to do work on an object?

Physics
1 answer:
Stolb23 [73]3 years ago
5 0
Energy? whether it is kinetic or potential, force usually requires some sort of energy to do work
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1. What is the gravitational force between two 4 kilogram masses separated by a distance of 5
Anon25 [30]
Yo, I assumed that this situation occurs on Earth otherwise the answer would be different.

7 0
3 years ago
Give reasons:
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4 years ago
A thermometer is placed directly sunlight will it read the temperature of the air or of the sun or of something else??
Norma-Jean [14]
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7 0
4 years ago
A ray of monochromatic light ( f = 5.09 × 10^14 Hz) passes from air into Lucite at an angle
harina [27]
     Let us consider the air with the index 1 and the lucite with index 2. Using the Snell's Secound Law, we have:

\frac{sen\O_{2}}{sen\O_{1}} = \frac{n_{2}}{n_{1}} \\ sen\O_{2}= \frac{n_{2}*sen\O_{1}}{n_{1}}
 
     Entering the unknowns, remembering that the air refrective index is 1 and the lucite refrective index is 1.5, comes:

sen\O_{2}= \frac{n_{2}*sen\O_{1}}{n_{1}} \\ sen\O_{2}= \frac{1.5* \frac{1}{2} }{1} \\ sen\O_{2}=0.75
  
     Using the arcsin properties, we get:

sen\O_{2}=0.75 \\ arcsin(0.75)=\O_{2} \\ \boxed {\O_{2}=48.59^o}

Obs: Approximate results, and the drawing is attached

If you notice any mistake in my english, let me know, because i am not native.

6 0
3 years ago
HELP!!!What type of image is formed by a lens if m=-0.87?
lara31 [8.8K]
Ur asnwers B my friend have an amazing day:)
7 0
3 years ago
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