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3 years ago

Which of the following is a real-life example of a rotation?

Physics

1 answer:

WITCHER [35]3 years ago

4 0

Answer:

a ceiling fan a ceiling fan

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A balloon is filled with 73 L of air at 1.3 atm pressure. What pressure is needed to change the volume to 43L?

Licemer1 [7]

Answer:

roughly 2.2 atm

Explanation:

using Boyle's law (P1V1=P2V2),

73×1.3=43×x

x= 2.21 or 2.2 atm

8 0

3 years ago

What's an example sentence using thermal energy

xeze [42]

Friction is an example of thermal energy. As the tiny heat particles move, more warmness is made from the friction.

6 0

4 years ago

Find the net force and acceleration. 15 points. Will give brainliest!

gladu [14]

Answer:

$\boxed{F_{net} = 28.7 \ N}$

$\boxed{a = 2.1 \ m/s^2}$

Explanation:

Finding the net force:

Firstly , we'll find force of Friction:

$F_{k} = (micro)_{k}mg$

Where $(micro)_{k}$ is the coefficient of friction and m = 13.6 kg

$F_{k} = (0.16)(13.6)(9.8)\\$

$F_{k} = 21.32 \ N$

Now, Finding the net force:

$F_{net} = F - F_{k}\\F_{net} = 50 - 21.32\\$

$F_{net} = 28.7 \ N$

Finding Acceleration:

$a = \frac{F_{net}}{m}$

$a = \frac{28.7}{13.6}$

$a = 2.1 \ m/s^2$

8 0

4 years ago

As a falling apple, approaches the ground, its potential energy

attashe74 [19]

Answer:

Decreases.

Explanation:

When an object with potential energy falls to the ground, its potential energy decreases and kinetic energy increases.

7 0

2 years ago

A 26-kg sled is on a snow-covered slope. The coeﬃcients of friction between the sled’s runners and the snow are µs = 0.096 and µ

sweet-ann [11.9K]

Answer:

Explanation:

Given

mass of sled =26 kg

coefficient of static friction $\mu _s=0.096$

coefficient of kinetic friction $\mu _k=0.072$

In order to move sled from rest we need to provide a force greater than static friction which is given by

$f_s=\mu mg=0.096\times 26\times 9.8=24.46 N$

After Moving Sled kinetic friction comes in to play which is less than static friction

$f_k=\mu _kmg=0.072\times 26\times 9.8=18.34 N$

therefore minimum force to keep moving sledge at constant velocity is 18.34 N

3 0

3 years ago