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kati45 [8]
3 years ago
13

17. A skateboard has a mass of 3.2 kg. If it slips out from a skateboarder and has

Physics
1 answer:
Akimi4 [234]3 years ago
6 0
<h2>Book will hit the foot with force 21.8 N</h2>

Explanation:

The momentum of any object  = m v

here m is the mass of body and v is its velocity

Thus momentum P = 3.2 x 1 = 3.2 kg-m

As the book is falling freely , so it will fall with and acceleration g

The force exerted by it is = m g

Thus force = 2.18 x 10 = 21.8 N

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There are many different mediums that waves travel through. What type of wave causes distortion of a medium?
iogann1982 [59]
The sound wave <span>causes distortion of a medium. The sound wave is formed</span><span> from the reflections of the sound waves from surrounding material. So, the sound that we hear in a room </span><span>is a combination of the original sound and its reflections off of the various surfaces in the room.</span>


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3 years ago
3
Nikitich [7]

Answer:

Protons and Neutrons are found in the nucleus and the electrons are found on the outside of the nucleus

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7 0
4 years ago
Work of 5 Joules is done in stretching a spring from its natural length to 19 cm beyond its natural length. What is the force (i
densk [106]

Answer:

Explanation:

Given that,

5J work is done by stretching a spring

e = 19cm = 0.19m

Assuming the spring is ideal, then we can apply Hooke's law

F = kx

To calculate k, we can apply the Workdone by a spring formula

W=∫F.dx

Since F=kx

W = ∫kx dx from x = 0 to x = 0.19

W = ½kx² from x = 0 to x = 0.19

W = ½k (0.19²-0²)

5 = ½k(0.0361-0)

5×2 = 0.0361k

Then, k = 10/0.0361

k = 277.008 N/m

The spring constant is 277.008N/m

Then, applying Hooke's law to find the applied force

F = kx

F = 277.008 × 0.19

F = 52.63 N

The applied force is 52.63N

6 0
3 years ago
En una competencia automovilística, Germán tarda 38 s en dar una vuelta a la
attashe74 [19]

Explanation:

Análisis estadístico de resultados de ensayos de pavimentos asfálticos según la ... T38 Caracterizacin dinámica de suelos granulares ... Se retira y se da vuelta la probeta

3 0
3 years ago
Which type of climate has no winter
Scilla [17]
Humid tropical climates are climates that have no winters.
4 0
3 years ago
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