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2 years ago

The loudness of a sound is determined by the __________, or height, of the sound wave.

Physics

1 answer:

NISA [10]2 years ago

4 0

Answer: Aplitude

Explanation: Loudness depends on the amplitude,or height, of sound waves. The greater the amplitude, the louder the sound perceived. Amplitude is measured in decibels.

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A 34.1-mL sample of benzene at 20.8°C was cooled to its melting point, 5.5 °C, and then frozen at 5.5 °C. Calculate the quantity

posledela

Answer:

4541.8 J

Explanation:

First we find the mass of benzene available

mass = density x volume

= 0.867 x 34.1

= 29.5647 g

Then we find the amount of heat transferred by two processes:

heat tranferred = heat lost during temp drop + heat lost during freezing

= mcΔT + mL

= 29.5647 x 1.74 x (20.8 - 5.5) + 29.5647 x 127

= 4541.7883434 J

= 4541.8 J

3 0

2 years ago

Read 2 more answers

Define one solar day

Mila [183]

Answer:

the time between successive meridian transits of the sum at a particular place

8 0

2 years ago

200 mL of an ideal gas is placed in a piston and is held at a pressure of 500 torr. If the temperature is held constant and the

galina1969 [7]

Answer:

V₂=153.84 m L

Explanation:

Given that

Initial volume ,V₁ = 200 m L

Initial pressure ,P₁= 500 torr

Final pressure P₂ = 650 torr

Lets take the final volume =V₂

Given that process occurs at constant temperature and we know that for constant temperature process

P₁ V₁ = P₂ V₂

$V_2=\dfrac{P_1V_1}{P_2}$

Now by putting the values

$V_2=\dfrac{500\times 200}{650}\ mL$

V₂=153.84 m L

Therefore the new volume of the gas will be 153.8 4mL.

7 0

2 years ago

The coil springs on a car's suspension have a value of k = 64000 N/m. When the

AlladinOne [14]

80 joule is momentarily stored in each spring

Solution:

Given that,

The coil springs on a car's suspension have a value of k = 64000 N/m

When the car strikes a bump the springs briefly compress by 5.0 cm (.05 m)

By compressing the spring, we apply a force over a distance

As a result we have done work on the spring

Doing work means that we have transferred energy to spring in form of elastic potential

Therefore,

k = 64000 N/m

x = 0.05m

The elastic potential energy is given as:

$PE = \frac{1}{2}kx^2$

Where, "k" is the spring constant and "x" is the displacement

$PE = \frac{1}{2} \times 64000 \times 0.05^2\\\\PE = 32000 \times 0.0025\\\\PE = 80$

Thus 80 joule is momentarily stored in each spring

8 0

3 years ago

Mountain pull. A large mountain can slightly affect the direction of ""down"" as determined by a plumb line. Assume that we can

Nastasia [14]

Answer:

6.18 um

Explanation:

The plumb line will be pulled down by a combination of the gravitationall pull of Earth and of the mountain. The Earth pulls down and the mountain to the side. Because of this it will fall not in a straight line down, but slightly to the side. Since the plumb line will follow the compound gravity we can imagine a rectangle triangle formed by the plumb line, a vertical line that ends at the same height as the plumb line, and the sideways displacement.

The total gravity will be proportional to the plumb line lenght, the vertical line will be proportional to Earth's gravity and the sideways displacement to the mountain pull.

The gravity of Earth is 9.81 m/s^2

The pull of the mountain will be defined by Newton's law of universal gravitation:

$F = G \frac{m1 * m2}{r^2}$