All categories

4 years ago

WILL GIVE BRAINIEST TO CORRECT ANSWER

Physics

1 answer:

Illusion [34]4 years ago

5 0

Answer:

Hey mate, here's ur answer

-------------------------------------------------------------

Loudness refers to how a sound seems to a listener, whether it's loud or soft.

___________________________

Intensity  is the sound power per unit area. It is independent of the sensitivity of the human ears.

___________________________

The loudness of a sound relates the intensity of any given sound to the intensity at the threshold of hearing. It is measured in decibels (dB).

___________________________

Hope this helps

#stayhomestaysafemate

:D

You might be interested in

A large fake cookie sliding on a horizontal surface is attached to one end of a horizontal spring with spring constant k = 375 N

spayn [35]

Answer:

The conservation of energy should be used to answer this question.

At the position where the spring is unstretched, the elastic potential energy of the spring is zero.

$K_1 + U_1 - W_f = K_2 +U_2\\K_1 - W_f = U_2$

since $U_1$ and $K_2$ is equal to zero.

$W_f = F_fx\\\\U_2 = \frac{1}{2}kx^2\\\\19 - (10)x = \frac{1}{2}(375)x^2\\\\375x^2 + 20x - 38 = 0$

The roots of this quadratic equation can be solved by using discriminant.

$\Delta = b^2 - 4ac\\x_{1,2} = \frac{-b \pm \sqrt{\Delta}}{2a}$

$x_1 = -0.346\\x_2 = 0.292$

We should use the positive root, so

x = 0.292 m.

We should use energy conservation between the point where the spring is momentarily at rest, and the point where the spring is unstretched.

$K_2 + U_2 - W_f = K_3 + U_3\\U_2 - W_f = K_3$

since the kinetic energy at point 2 and the potential energy at point 3 is equal to zero.

$\frac{1}{2}kx^2 - F_fx = K_3\\K_3 = 15.987 - 2.92 = 13.067 J$

Explanation:

In questions with springs, the important thing is to figure out the points where kinetic or potential energy terms would be zero. When the spring is unstretched, the elastic potential energy is zero. And when the spring is at rest, naturally the kinetic energy is equal to zero.

In part b) the cookie slides back to its original position, so the distance traveled, x, is equal to the distance in part a). The frictional force is constant in the system, so it is quite simple to solve part b) after solving part a).

8 0

3 years ago

Acceleration due to gravity on earth is:

Olenka [21]

C because gravity is holding everything down

5 0

3 years ago

What is a benefit of a medically supervised rehabilitation program?

Marina86 [1]

A. Doctors can safely monitor the physical demands of detox

A. Doctors can safely monitor the physical demands of detoxB. Doctors can provide accountability and emotional support

A. Doctors can safely monitor the physical demands of detoxB. Doctors can provide accountability and emotional supportC. Doctors can prescribe drugs to counteract the effects of alcohol

A. Doctors can safely monitor the physical demands of detoxB. Doctors can provide accountability and emotional supportC. Doctors can prescribe drugs to counteract the effects of alcoholD. Doctors can help shorten the time needed for detox and rehab

3 0

3 years ago

A solid object has a density of 0.75 g/mL, in which liquid(s) will it sink? SUPPORT your answer.

sukhopar [10]

The object will sink in any liquid whose density is less than 0.75 g/mL .

A few examples are butane, ether, gasoline, hexane, octane, naphtha, pentane, and propane.

3 0

4 years ago

Can any ideal gas power cycle have a thermal efficiency greater than 55 percent when using thermal energy reservoirs at 627∘C at

Yanka [14]

Answer:

Since the maximum thermal efficiency is higher than 55 percent, there can be a power cycle with these reservoir temperature with an efficiency higher than 55 percent.

Explanation:

The maximum thermal efficiency is determined from the given temperature

nth Carnot = 1- TL/TH

Where TL= 17+273= 290k

TH= 627*273= 900K.

nth Carnot = 1- 290/900 = 0.68

0.68*100 = 68 percent

8 0

3 years ago