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gtnhenbr [62]
3 years ago
7

Imagine the deep, low sound made by a tuba. Now, what is an example of a sound with a much higher pitch?

Physics
1 answer:
Amiraneli [1.4K]3 years ago
8 0
The answer to this is c the chime of thunder'

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What is the magnitude of vector K?<br> O 8 m<br> O 16 m<br> O 60 m<br> O 136 m
Ivahew [28]

Answer:

answer is c because 10Multiply by6

3 0
2 years ago
I need help answering this question.
Sloan [31]
The work done is the loss of kinetic energy.

Loss of kinetic energy = m*(v1^2 - v2^2)/2 = 10 kg * [ (99m/s)^2 - (1m/s)^2]/2 = 49,000 J

 
6 0
3 years ago
An airplane flies with a constant speed of 720 km/hr. How long will it take to travel a distance of 1440 km? Please show your wo
choli [55]

Answer:

2 h

Explanation:

Velocity =Distance/time ⇒ time = distance/speed

                                                     = 1440/720

                                                     = 2 h

6 0
3 years ago
A spring with spring constant 40 N/m is attached to the ceiling, and a 5.1-cm-diameter, 1.5 kg metal cylinder is attached to its
Allisa [31]

Answer: 24.5 cm

Explanation:

Given

Force constant of spring, k = 40 N/m

Diameter of spring, d = 5.1 cm = 0.051 m

Mass of cylinder, m = 1.5 kg

Let us assume that the cylinder is hanging in such a way that the circular end is parallel with the water. Also, we assume that the tank water level is not materially affected by the displacement of the cylinder while the cylinder sinks. The water is fresh and as we all know, the density of water is 1000 kg/m³

To solve this, we assume x to be the spring extension and it's equivalent sinking distance(in meters). We then apply the formula,

mg = kx + ρgAx

mg = x(k + ρgA)

x = mg / (k + ρgA), where

A = πd²/4

A = (3.142 * 0.051²)/4

A = 0.0082 / 4

A = 0.00205 m²

x = 1.5 * 9.81 / [40 + (1000 * 9.81 * 0.00205)]

x = 14.715 / (40 + 20.1105)

x = 14.715 / 60.1105

x = 0.245 m

or 24.5 cm of stretch or sinking

4 0
2 years ago
Some scientists believe that black holes are the foundation of catalyst for galaxies. How do they believe that the galaxies form
Strike441 [17]
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The other theory is known as the Bottem-up theory. This theory is the opposite of the first theory, where scientists believe that gases in space collapse and compress into clumps the size of millions of suns, which is small for the size of  galaxies. The clumps then would merged together to form a galaxy
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