All categories

4 years ago

Which factors will increase the speed of a sound wave in the air?

Physics

1 answer:

Dafna11 [192]4 years ago

7 0

A higher temperature, stiffer materials, and less dense materials increase the speed of sound.

You might be interested in

Thomas Newcomen was the first to produce a working steam engine. Why is the work of James Watt more widely known than the work o

LenaWriter [7]

Answer:

The steam engine of James watt is more efficient than Newcomen ans more suitable for the industrial revolution.

Explanation:

James Watt is more widely know for working steam engine because Watt has created better engine which is suitable for the industrial revolution. The steam engine of James watt is more efficient than Newcomen. Watt developed the condensing arrangement by using piston which lessen the initial pressure leading to effectively worked than Newcomen's

4 0

3 years ago

B) A skilled jet fighter flies a stunt plane in a vertical circle of 1200 ft

vodka [1.7K]

Answer:I need the ans to this one too

Explanation:

4 0

3 years ago

A girl exerts a horizontal force of 109 N on a crate with a mass of 31.2 kg. HINT (a) If the crate doesn't move, what's the magn

vesna_86 [32]

Answer:

(a) Magnitude of static friction force is 109 N

(b) Minimum possible value of static friction is 0.356

Solution:

As per the question;

Horizontal force exerted by the girl, F = 109 N

Mass of the crate, m = 31.2 kg

Now,

(a) To calculate the magnitude of static friction force:

Since, the crate is at rest, the forces on the crate are balanced and thus the horizontal force is equal to the frictional force, f:

F = f = 109 N

(b) The maximum possible force of friction between the floor and the crate is given by:

$f_{m} = \mu_{s}N$

where

N = Normal reaction = mg

Thus

$f_{m} = \mu_{s}mg$

For the crate to remain at rest, The force exerted on the crate must be less than or equal to the maximum force of friction.

$f\leq f_{m}$

$f \leq \mu_{s}mg$

$109 \leq \mu_{s}\times 31.2\times 9.8$

$\mu_{s}\geq 0.356$

7 0

3 years ago

If homeboy joe is pushing a box with force of 57.0 in the horizontal direction and -15.0 in the vertical direction. What is the

Ksenya-84 [330]

Answer:

The magnitude of joes net force is 58.9.

Explanation:

The magnitude of the net force is given by:

$F_{net} = \sqrt{F_{x}^{2} + F_{y}^{2}}$

Where:

$F_{x}$ : is the force in the horizontal direction = 57.0

$F_{y}$ : is the force in the vertical direction = -15.0

$F_{net} = \sqrt{(57.0)^{2} + (-15.0)^{2}} = 58.9$

Therefore, the magnitude of joes net force is 58.9.

I hope it helps you!

5 0

3 years ago

What happens as photons of visible light are absorbed by dye molecules?

rjkz [21]

Certain electrons in the dye molecule move to a higher energy level, with the difference in energy between the lower and higher energy levels being the same as the energy of the absorbed photons.

3 0

3 years ago