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stira [4]
3 years ago
13

Which can happen during a physical change?

Physics
1 answer:
4vir4ik [10]3 years ago
3 0
C.<span>Molecules can move more rapidly and freely and change states.
</span>
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A hiker walks 20.51 m at 33.16 degrees. What is the Y component of his displacement?
Serhud [2]

Answer:

<em>The y component of his displacement is 11.22 meters</em>

Explanation:

<u>Components of the displacement</u>

The displacement is a vector because it has a magnitude and a direction. Let's suppose a displacement has a magnitude r and a direction θ, measured with respect to the positive x-direction. The horizontal component of the displacement is calculated by:

x=r\cos\theta

The vertical component is calculated by:

y=r\sin\theta

The hiker has a displacement with magnitude r = 20.51 m at an angle of 33.16 degrees. Substituting in the above equation:

y=20.51\sin(33.16^\circ)

y=11.22\ m

The y component of his displacement is 11.22 meters

7 0
3 years ago
A wheelbarrow is a good example of a second-class lever. True or False
olganol [36]

Answer:

true

Explanation:

a wheelbarrow has its load situated between the fulcrum and the force the wheel Barrow is 2nd class because of its resistance between the force and the axis

3 0
3 years ago
Where would a boat produce the highest concentration of carbon monoxide?
mr_godi [17]

<span>A boat would produce the highest concentration of carbon monoxide in the exhaust system.

</span>Carbon monoxide<span> (CO) is a colorless, odorless, and tasteless gas that is slightly less dense than air. It is toxic to </span>hemoglobic<span> <span>animals (both </span></span>invertebrate<span> <span>and vertebrate, including humans) when encountered in concentrations above about 35 </span></span>ppm<span>.</span>

5 0
3 years ago
Paragraph about how the constellations were used by ancient civilizations.
nata0808 [166]

Answer:

What does this mean ?

Explanation:

8 0
3 years ago
Which pair of graphs represent the same motion?
GaryK [48]
Show me the graphs and i would be glad to help u
7 0
3 years ago
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