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IgorLugansk [536]
3 years ago
8

What is the atomic number of the atom shown?A)3B)13C)14D)27​

Physics
1 answer:
Assoli18 [71]3 years ago
7 0

Answer:

B - 13

The protons listed in the atom are 13, and the protons are the same number as the atomic number. Therefore, your answer should be 13.

Hope This Helps!   Have A Nice Day!!

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Lexy throws a dart with an initial velocity of 25 m/s at an angle of 60° relative to the ground. what is the approximate vertica
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An initial velocity is:
v o = 25 m/s
The vertical component of the initial velocity:
v o y = v o * sin 60° =
= v o * √3 / 2 = 25 m/s * √3 / 2 = 21.65 m/s
Answer:
The approximate vertical component of the initial velocity is 21.65 m/s.
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3 years ago
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A 1.5kw vacuum cleaner is used for half an hour. Calculate its energy usage.​
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Answer:

its energy usage is 0.05

Explanation:

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2 years ago
The surface is tilted to an angle of 37 degrees from the horizontal, as shown above in Figure 3. The blocks are each given a pus
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Answer:

Incomplete question: "Each block has a mass of 0.2 kg"

The speed of the two-block system's center of mass just before the blocks collide is 2.9489 m/s

Explanation:

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m = mass of each block = 0.2 kg

v = speed = 0.35 m/s

t = time to collision = 0.5 s

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delta(P)=F*delta(t)

P_{f} -P_{i}=F*delta(t)

2m(v_{f} -v_{i})=F*delta(t)

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It is neccesary calculate the force:

F=(m+m)*g*sin\theta

Here, g = gravity = 9.8 m/s²

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6 0
3 years ago
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Answer:

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v^2 = (N - m g) R / m

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5 0
2 years ago
What happens when Earth rotates on its axis and how long does it take
faust18 [17]

Answer:

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It takes 24 hour

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