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4 years ago

15

The period of an ocean wave is 5 seconds. What is the wave's frequency?

1 answer:

Oksana_A [137]4 years ago

7 0

Answer:

f=1/5= 0.2 Hz

..,...........

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A sound mixer is impressed by the new equipment that was just installed in his recording studio. He says that now he will be abl

Artyom0805 [142]

Answer:

Wavelnght

Explanation:

He says undesired wavelengths can be eliminated with the new sound mixer. Musical sounds are spread over a medium through waves of different characteristics, one of them is wavelenght, that is the distance between begining and the end of an oscilation, normally measured on small distance units such as milimeters or even less. Sound may be higher or deeper depending on its wavelenght, so this sound mixer is able to filter all the sound the user does not want to include in his work, for example, noises from enviroment. Now the producer can make music focused on high notes, like the ones from violins, or focused on low ones like the ones from a bass.

7 0

4 years ago

If you are designing a force multiplying system with two pneumatic cylinders. Your system should increase the force by a multipl

Tomtit [17]

Answer:

decrease the area in the second cylinder

Explanation:

In a two-cylinders pneumatic system, the pressure exerted on the first cylinder is equal to the pressure on the second cylinder:

$p_1 = p_2$

We can rewrite the pressure as product between force (F) and area (A) of the cylinder:

$F_1 A_1 = F_2 A_2$

In this system, the output force should be 4 times the input force:

$F_2 = 4 F_1$

Substituting into the previous equation, we get:

$F_1 A_1 = 4 F_1 A_2\\A_2 = \frac{A_1}{4}$

This means that the area of the second cylinder must be 1/4 of the area of the first cylinder, so the correct answer is

decrease the area in the second cylinder

8 0

3 years ago

Two students, standing on skateboards, are initially at rest, when they give each other a shove! After the shove, one student (7

Elden [556K]

Answer:

The other student (59kg) moves right at 7.44 m/s

Explanation:

Given;

mass of the first student, m₁ = 77kg

mass of the second student, m₂ = 59kg

initial velocity of the first student, u₁ = 0

initial velocity of the second student, u₂ = 0

final velocity of the first student, v₁ = 5.7 m/s left

final velocity of the second student, v₂ = ? right

Apply the principle of conservation of linear momentum;

Total momentum before collision = Total momentum after collision

m₁u₁ + m₂u₂ = m₁v₁ + m₂v₂

(77 x 0) + (59 x 0) = (-77 x 5.7) + (59 x v₂)

0 = - 438.9 + 59v₂

59v₂ = 438.9

v₂ = 438.9 / 59

v₂ = 7.44 m/s to the right

Therefore, the other student (59kg) moves right at 7.44 m/s

6 0

3 years ago

Alfred wegener said that earths continents are moving which evidence supports this theory

bearhunter [10]

Similarities in human fossils

6 0

3 years ago

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What do you observe as you immerse the empty jug in a bucket which contains water? Explain why you observe this phenomenon.

liraira [26]

Answer:

The jug drowns because the density of the jug is more than that of the density of water.

7 0

3 years ago

Read 2 more answers