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3 years ago

A scientist tests what change would add the most energy to a moving ball. Which of these would add the most energy?

Physics

1 answer:

7nadin3 [17]3 years ago

5 0

Tripling the speed because it’s giving off more energy

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A hydrogen atom has a radius of 2.5 x 10-11 m<br> Determine the radius of a magnesium atom.

baherus [9]

Answer:

$R = 1.5* 10^{-10}m$

Explanation:

Given

$r = 2.5 * 10^{-11}m$ -- radius of hydrogen atom

<em>See attachment</em>

Required

Determine the radius of magnesium atom (R)

From the attachment, the ratio of a hydrogen atom to a magnesium atom is:

$Ratio = 6mm : 36mm$

Simplify

$Ratio =1 : 6$

Represent the radius as ratio:

$Ratio = r : R$

Substitute $r = 2.5 * 10^{-11}m$

$Ratio = 2.5 * 10^{-11}m : R$

Equate both ratios

$2.5 * 10^{-11}m : R = 1 : 6$

Express as fraction

$\frac{2.5 * 10^{-11}m}{R} = \frac{1}{6}$

Cross Multiply

$R * 1 = 2.5 * 10^{-11}m * 6$

$R * 1 = 2.5 * 6* 10^{-11}m$

$R * 1 = 15* 10^{-11}m$

$R = 15* 10^{-11}m$

$R = 1.5*10* 10^{-11}m$

$R = 1.5* 10^{1-11}m$

$R = 1.5* 10^{-10}m$

Hence, the radius of the magnesium atom is: $1.5* 10^{-10}m$

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3 years ago

Masses in the universe curve space-time. What does the resulting shape of space-time cause?

swat32

I think the answer is D: gravity

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3 years ago

What is the definition of a parasite?

saul85 [17]

An organism that lives in or on an organism of another species (its host) and benefits by deriving nutrients at the other's expense.

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4 years ago

Properties that describe the appearance of matter are known as what properties

Marina86 [1]

Physical properties is the answer

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3 years ago

Can a moving car be a frame of reference?

GalinKa [24]

Answer:can a moving car be a frame of reference?

Therefore, a frame of reference can be in motion, and that motion can be of several different types. Anyone who has ever taken a ride in a car has been in a moving frame of reference and has experienced the several different types of motion through which this frame can move.

Explanation:

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3 years ago