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3 years ago

12

How did the space rock die??

1 answer:

EastWind [94]3 years ago

6 0

Got shot with a pump shotgun to the head

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How is energy transferred throughout the roller coaster

solmaris [256]

Answer:

On a roller coaster, energy changes from potential to kinetic and back again many times over and over the course of the ride. Kinetic energy is energy that an object has because of its motion. All moving objects possess kinetic energy, which is determined by the mass and speed of the object.

Explanation:

3 0

4 years ago

Read 2 more answers

Calculate the pressure exerted on the floor by the boy standing on both feet if the weight of the boy is 40kg. Assume that the a

Jlenok [28]

Answer:

P = 1333.33 N

Explanation:

The pressure exerted by the boy on the floor can be calculated by the following equation:

$P = \frac{F}{A}$

where,

P = Pressure exerted by the boy = ?

F = Force Applied = Weight of Boy = 40 kg = 40 N (since 1 kg = 1N)

A = Area of application of force = 2(Area of one show) = 2(6 cm x 25 cm)

A = 2(0.06 m x 0.25 m) = 0.03 m²

Therefore,

$P = \frac{40\ N}{0.03\ m^2}\\\\$

<u>P = 1333.33 N</u>

4 0

3 years ago

Which of the following has a negative acceleration?

Volgvan

Answer:

B. A car sits at rest at a stop sign.

6 0

3 years ago

The particles of a gas are actually _____. electrons or protons protons or neutrons atoms or elements atoms or molecules

miskamm [114]

<u>Answer</u>

atoms or molecules

<u>Explanation</u>

A pure gas such as argon or neon is made up of individual atoms. Other compound gasses such as oxygen or carbon dioxide are made up of elements.

Protons, neutrons and electrons are parts of an atom. They are not actually particles but charges.

The answer to the question is <em>atoms or molecules.</em>

5 0

3 years ago

Read 2 more answers

How is the acceleration of a car traveling on an elevated air track related to the angle of elevation and the height of elevatio

vitfil [10]

on a given inclined we know that net force is given by

$F_{net} = - mgsin\theta$

here we know that

$F_{net} = ma$

so here we have

$ma = - mg sin\theta$

$a = - gsin\theta$

so here acceleration depends directly on angle of inclination

now we also know that if height of the inclined is H and its length is L

then we can write

$sin\theta = \frac{H}{L}$

so the acceleration is given as

$a = - g*\frac{H}{L}$

so acceleration also depends directly on height of the inclined plane

4 0

3 years ago