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Art [367]
3 years ago
11

1. A ball is thrown vertically upward.

Physics
1 answer:
Ghella [55]3 years ago
4 0

Answer:

The acceleration increases.

Explanation:

hope this helps

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1. What are the different types of waves? Give examples of each type.
lyudmila [28]

Answer:

See explanation

Explanation:

1) There are two main types of waves;

Mechanical waves and electromagnetic waves.

Mechanical waves usually require a medium for propagation, e.g sound, waves on a spiral spring, etc

Electromagnetic waves do not require a medium for propagation e.g microwaves, x-rays etc

2) The phenomenon is known as refraction. Refraction occurs at the boundary between two media because of the change in the speed of a wave as it moves from one medium to another.

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2 years ago
A man pushes a crate along a factory floor by exerting a force of 55 N. If
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Answer:

it's 220 J

the second one

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2 years ago
TIME REMAINING
NARA [144]

Answer:

Her computer is producing thermal energy, not heat.

Explanation:

4 0
3 years ago
A package is dropped from an airplane flying horizontally with constant speed V in the positive xdirection. The package is relea
k0ka [10]

Answer:

D=V*\sqrt{\frac{2H}{g} } -\frac{H}{4}

Explanation:

From the vertical movement, we know that initial speed is 0, and initial height is H, so:

Y_{f}=Y_{o}-g*\frac{t^{2}}{2}

0=H-g*\frac{t^{2}}{2}    solving for t:

t=\sqrt{\frac{2H}{g} }

Now, from the horizontal movement, we know that initial speed is V and the acceleration is -g/4:

X_{f}=X_{o}+V*t+a*\frac{t^{2}}{2}   Replacing values:

D=V*\sqrt{\frac{2H}{g} }-\frac{g}{4}*\frac{1}{2} *(\sqrt{\frac{2H}{g} })^{2}

Simplifying:

D=V*\sqrt{\frac{2H}{g} } -\frac{H}{4}

4 0
3 years ago
An element is ____
Likurg_2 [28]

An element is C. A substance with only one type of Atom

8 0
3 years ago
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