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3 years ago

Why do boys play with your emotions?

Chemistry

2 answers:

mamaluj [8]3 years ago

6 0

I dont think always kow how to treat a woman right

GaryK [48]3 years ago

3 0

Because boys are stupid and usually don't care about anyone but there self and there friends!!

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Which equation shows how to solve for enthalpy of solution based on the information in tables?

Tatiana [17]

Answer: B. triH sol Mgl2= -triHlat+ triHhydr Mg^2+ 2triHhydr^l-

Explanation:

Just did it and it was right

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3 years ago

The energy released by nuclear fission can be used to ________ and turn a turbine to produce ________ energy.

enyata [817]

Heat water; mechanical (the movement of a turbine is based off of mechanical energy, not chemical or potential).

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A couple is planning to have a child. The father -to-be has six fingers, a dominant trait. His genotype is Ff. His wife has five

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A. There’s not enough info

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3 years ago

What happens when two positively charged objects move closer to each other?

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3 years ago

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A 1.85 kg textbook is sitting on a bookshelf 2.23 m above the floor. How much potential energy does it have?

neonofarm [45]

Answer:

$\boxed {\boxed {\sf 40.4299 \ Joules}}$

Explanation:

Potential energy is energy due to position. It is the product of mass, height, and acceleration due to gravity.

$PE= m \times g \times h$

The mass of the textbook is 1.85 kilograms. Assuming this is on Earth, the acceleration due to gravity is 9.8 meters per square second. The height is 2.23 meters.

m= 1.85 kg
g= 9.8 m/s²
h= 2.23 m

Substitute the values into the formula.

$PE = 1.85 \ kg \times 9.8 \ m/s^2 \times 2.23 \ m$

Multiply the first 2 numbers together.

$PE=18.13 \ kg*m/s^2 *2.23 \ m$

Multiply again.

$PE= 40.4299 \ kg*m^2/s^2$

1 kilogram square meter per square second (1 kg*m²/s²) is equal to 1 Joules (J)
Our answer of 40.4299 kg*m²/s² is equal to 40.4299 J

$PE= 40.4299 \ J$

The textbook has <u>40.4299 Joules of potential energy.</u>

7 0

3 years ago