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sergij07 [2.7K]

3 years ago

11

Which of the following is most likely to be attracted to a magnet? A. A piece of glass B .A piece of plastic C .A stainless-stee

l paper clip D .A wet newspaper

2 answers:

Law Incorporation [45]3 years ago

7 0

C. A stainless steel paper clip

GuDViN [60]3 years ago

3 0

It would be C A stainless steel paperclip because it is metal A,B,D are not magnetic because they are not metal.

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Sound waves travel at the rate of 343 m/s at 20°C. If a man standing 450 meters away from the wall of a canyon yells, “Hello,” h

nekit [7.7K]

Answer:

2.62seconds

Explanation:

Speed is defined as the ratio of the distance covered by a body with respect to time.

Speed v = Distance (s)/Time (t)

For a traveling sound wave, the distance between the source of a sound and the reflector is '2S'.

Speed v = 2 × distance (S)/Time (T)

V = 2S/t

2S = vt

Given speed of the wave = 342m/s

Distance covered = 450m

t = 2S/v

t = (2×450)/343

t = 900/343

t = 2.62seconds

It will take him 2.62seconds for him to hear his own voice echo off of the wall.

5 0

3 years ago

Read 2 more answers

HELP THIS IS DUE TODAY PLEASE

Sonja [21]

It’s me again lol you’re questions are simple the formula is given in the triangle
The answer is C 39 hz

Please look at the attached image below for the explanation

5 0

3 years ago

In what circuit does an increase in resistance mean an increase in current?

skad [1K]

I think in parallel circuits.

6 0

2 years ago

Is kinetic energy is always transformed into potential energy.

serious [3.7K]

Potential energy is energy stored in an object due to its position or arrangement. Kinetic energy is energy of an object due to its movement - its motion. All types of energy and be transformed into other types of energy. This is true for potential and Kinetic energy as well.

6 0

2 years ago

A pendulum on plant X is 0.25 meters long and the period is 4 seconds. What is “g” on Planet X?

Monica [59]

Answer:

The value of g = 0.6168 m/s².

Explanation:

Given that,

On a planet X,

Length of the pendulum(L) = 0.25 meters,

Time period of the pendulum(T) = 4 seconds.

We have to find the 'g' value on the planet.

The 'g' value on a planet can be found by a pendulum with help of the formula,

T = 2π × $\frac{\sqrt{L} }{\sqrt{g} }$

From this, g = 4π² × $\frac{L}{T^{2} }$

Using the above formula and substituting the values,we get,

g = 0.6168 m/s².

7 0

3 years ago