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finlep [7]
3 years ago
12

If the time between the horn sounding and the people on the ship hearing the echo from the ship is 4 seconds, how far away is th

e ship from the cliff ? (velocity of sound in air is 331 m/s)
Question options:

A. 1324 m

B. 662 m

C. 0.012 m

D. 820 m
Physics
1 answer:
Ksenya-84 [330]3 years ago
4 0

Answer:

D

Explanation:

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Which of the following statements is true about transverse waves?
lions [1.4K]

Answer:

C

Explanation:

Transverse waves always have the same wavelengths.

3 0
3 years ago
What are the coordinates of the point that is 1/5 of the way from A(-7,-4) to B(3, 6)?
Olegator [25]

Answer:

coordinate will be

r = (1.33,4.33)

Explanation:

As we know that if a point will divide two given coordinates in m : n ratio

then in that case the point is given as

x = \frac{mx_1 + nx_2}{m+n}

y = \frac{my_1 + ny_2}{m+n}

here we know that two points are

(-7, -4) and (3, 6)

and the ratio is given as 1 : 5

now from above formula we will have

x = \frac{1(-7) + 5(3)}{1 + 5} = 1.33

y = \frac{1(-4) + 5(6)}{1 + 5} = 4.33

so coordinate will be

r = (1.33, 4.33)

7 0
4 years ago
The speed of light is 3 x 108 m/s (300,000,000 m/s). A light wave has a wavelength of 400 nm (0.0000004 m). What is the frequenc
kirill115 [55]

Explanation:

velocity = wavelength × frequency

3×10⁸ = 400/10⁹ × frequency

frequency = 3 × 10¹⁵ /400

frequency = 75×10¹¹Hz

6 0
2 years ago
You were in a tog-o-war contest which your team won. Write a letter to your friend that tells why your team won the contest. Rem
ollegr [7]

Answer:

Imagine a tug-of-war between you and one

friend. If you are stronger, you apply more

force to the rope. You pull your friend across

the line, and you are the winner! If your friend

is stronger, he might pull you across the line.

Sometimes the forces are equal. Neither you

nor your friend moves across the line. The two

forces are balanced.

3

We say that the net force on an object is the combination of all the forces acting on it. To find the net force of

forces that are acting in the same direction, add them together. For example, if you pull on a box with a force of 25

newtons (N) while your friend pushes the box (in the same direction you are pulling) with a force of 30 N, the net

force applied to the box in that direction is 55 newtons.

4

To find the net force of forces that are acting in opposite directions, subtract the smaller force from the larger

one. If you are pulling on a tug-of-war rope with a force of 40 N, and your friend is pulling with a force of 35 N in

the opposite direction, the net force on the rope is 5 newtons in your direction. You win!

Explanation:

3 0
3 years ago
I need help ASAP please and thank u very much if u can answer i’m giving a brainliest to btw
NemiM [27]

Answer:

A I Think

Explanation:

8 0
3 years ago
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