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3 years ago

3. If there is an atomic mass of 47

Physics

1 answer:

DochEvi [55]3 years ago

4 0

Answer:

Explanation:

Given parameters:

Atomic mass = 47

Atomic number = 20

Unknown:

Number of protons = ?

Number of neutrons = ?

Solution:

To solve this problem,

Atomic mass = number of protons + number of neutrons

Atomic number = number of protons

So;

Number of protons = 20

Now;

Number of neutrons = Atomic mass - number of protons

Number of neutrons = 47 - 20 = 27

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6. An earthquake releases two types of traveling seismic waves, called transverse and longitudinal waves. The average speed of t

Ymorist [56]

Answer:

The distance away the center of the earthquake is 1083.24 km.

Explanation:

Given that,

Speed of transverse wave = 9.1\ km/s

Speed of longitudinal wave = 5.7 km/s

Time = 71 sec

We need to calculate the distance of transverse wave

Using formula of distance

$d=v\times t$

$d=9.1\times t$ ....(I)

The distance of longitudinal wave

$d=5.7\times (t+71)$ ....(II)

From the first equation

$t=\dfrac{d}{9.1}$

Put the value of t in equation (II)

$d =5.7\times(\dfrac{d}{9.1}+71)$

$\dfrac{9.1d-5.7d}{9.1}=71\times5.7$

$d0.3736=404.7$

$d =1083.24\ km$

Hence, The distance away the center of the earthquake is 1083.24 km.

4 0

4 years ago

A bullet glider and a target glider both have a mass of 0.200 kg. The bullet glider is moving 0.450 m/s

Romashka [77]

Answer:

the two gliders collide, the mobile glider will transfer a bit of time to the fixed glider, which is why it comes out with a speed that is smaller than that of the bullet glider.

Explanation:

When the two gliders collide, the mobile glider will transfer a bit of time to the fixed glider, which is why it comes out with a speed that is smaller than that of the bullet glider.

Changes can occur that the gliders unite and move with a cosecant speed less than the initial one.

The whole process must be analyzed using conservation of the moment.

p₀ = m v₀

celestines que clash case

p_f = (m + M) v

po = pf

m v₀ = (n + M) v

v = $\frac{m}{m+M}$

calculemos

v= $\frac{0.200}{0.200+M} 0.450$

v= 0.09 m/s

elastic shock case

p₀ = m v₀

p_f = m v₁ +M v₂

p₀ = p_f

m v₀ = m v₁ + m v₂

6 0

3 years ago

What speed would a fly with a mass of 0.72 g need in order to have the same kinetic energy as a 1250 kg automobile traveling at

Elena L [17]

Kinetic of automobile

Mass m = 1,250 Kg; V = 11 m/s

Formula: K.E = 1/2 mV²

K.E = 1/2(1,250 Kg)(11 m/s)²

K.E = 75,625 J

Speed required for insect to have the same kinetic energy as automobile

Mass of insect = 0.72 g convert to Kg m = 7.2 x 10⁻⁴ Kg

K.E = 1/2 mV² Derive V =?

V = 2 K.E/m

V = √2(75,625 J)/7.2 x 10⁻4 Kg

V = √2.1 x 10⁸ m²/s²

V = 14,491.34 m/s (velocity of insect)

5 0

3 years ago

Is the answer true or false?

IgorLugansk [536]

True is the answer to this question I think.

5 0

3 years ago

Como estan formados los musculos?

VikaD [51]

Answer:

Explanation: El músculo esquelético está formado por fibras musculares, rodeadas de una capa de tejido conjuntivo, denominada endomisio. Las fibras se reúnen en fascículos primarios, que también están rodeados por otra capa de tejido conjuntivo, esta vez, más grueso, denominada perimisio.

3 0

3 years ago

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