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3 years ago

Melting butter is a physical change. Which best describes what is happening?

Physics

1 answer:

kati45 [8]3 years ago

3 0

Answer:

Option B

Explanation:

The butter forms a new arrangement of atoms i.e from solid to liquid

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Without the wheels, a bicycle frame has a mass of 8.29 kg. Each of the wheels can be roughly modeled as a uniform solid disk wit

trapecia [35]

Answer:

69.66 Joule

Explanation:

mass of bicycle frame, mf = 8.29 kg

mass of wheel, mw = 0.820 kg

radius, r = 0.343 m

velocity, v = 3.6 m/s

There are two wheels in the bicycle.

There are two types of kinetic energy of the system one is kinetic energy of rotation and another is rotational kinetic energy.

$K = \frac{1}{2}m_{f}v^{2}+ 2\times \frac{1}{2}m_{w}v^{2}+ 2\times \frac{1}{2}I_{w}\omega^{2}$

$K = \frac{1}{2}m_{f}v^{2}+m_{w}v^{2}+ \frac{1}{2}\times m_{w}v^{2}$

$K = \frac{1}{2}m_{f}v^{2}+ \frac{3}{2}\times m_{w}v^{2}$

$K = \frac{1}{2}\times 8.29\times 3.6^{2}+ \frac{3}{2}\times 0.820\times 3.6^{2}$

K = 69.66 J

3 0

3 years ago

When an object is electrically polarized

marta [7]

Answer:

One side is more positive, the other is more negative

Explanation:

When an atom is electrically polarized, it means that one side has more electrons than the other. This makes one side more negative as it has more electrons than the other. I hope this helps!

5 0

3 years ago

How a measuring scale measure our weight

Aloiza [94]

Scales measure how much something weighs—and they do it by measuring how much force exists between the object you're weighing and planet Earth. Although scales measure force, they give you measurements of mass in kilograms, grams, pounds, or whatever.

5 0

3 years ago

What is the range of motion of the elbow if extension is 0° and flexion is 145°?

inna [77]

Answer:

0 to 145 degrees

Explanation:

The normal range of flexion and extension is from 0 to 145 degrees.

6 0

2 years ago

How do you write the scientific name delis cactus correctly

Talja [164]

Delis cactus is the correct way to write it.

8 0

3 years ago

Read 2 more answers