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ahrayia [7]
3 years ago
14

Sample Response: I disagree with her because an atom has two main parts: the nucleus and the electron cloud. Atoms have three su

batomic particles: protons, neutrons, and electrons. Which of these statements did you include in your answer? Check all that apply The two main parts of an atom are the nucleus and the electron cloud. The three subatomic particles of an atom are protons, neutrons, and electrons.
Physics
1 answer:
defon3 years ago
3 0

Answer:

A and B

Explanation:

Both the given statements are true.

An atom has two main parts that include the nucleus and the electron cloud and an atom has three subatomic particles electron, proton and neutron.

<u>The nucleus is consists of neutrons (neutral subatomic particles) and protons (positively charged) and the cloud of electrons consists of electrons which are negatively charged particles.</u>

<u>Hence, the correct answer is "A and B".</u>

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Chase is trying to push a 120-kilogram boulder along the street. He applies a force of 1,115 newtons, and he does this over a di
lord [1]

Answer:

The work done is equal to zero = 0

Explanation:

Let us remember that the definition of physical work is given by the product of force by the displacement of the body.

Work=F*d\\\\where\\F= force [N]\\d=distance [m]\\replacing\\Work=1115*(0) = 0

4 0
3 years ago
jeremie ran around the track at the ymca for 2 hours. when he was done he figured that he had traveled 20 kilometers. what was h
laila [671]
(1) Speed is the ratio of the total distance covered by the object and the total time it takes for him to finish it. 

    Speed = distance / time 

In this item, we are given that the distance is 20 kilometers and that the time it takes for the trip is 2 hours. Substituting the known values,
   Speed = 20 kilometers / 2 hours 
    speed = 20 km/h

(2) Velocity on the other hand takes into account the displacement of the object from his original position. It is assumed that Jeremie was basically back to his original position after two hours. Hence, the velocity is equal to zero. 
3 0
3 years ago
What happens to an atom if the electrons in the outer shell are altered?
maxonik [38]

Answer:

NUCLEAR BOMB

Explanation:

3 0
3 years ago
Read 2 more answers
If the mass of a wheel is increased by a factor of 7 and the radius is increased by a factor of 15, by what factor is the moment
inn [45]

Answer:

The moment of inertia will be increased by a factor of 1575

Explanation:

Let the moment of inertia of a wheel be given as;

I = \frac{1}{2} mr^2\\\\

where;

I is the moment of inertia of the wheel

m is mass of the wheel

r is radius of the wheel

when the mass is increased by a factor of 7 and the radius is increased by a factor of 15

I_1 = \frac{1}{2}mr^2\\ \\I_2 = \frac{1}{2}(7m)(15r)^2\\\\I_2 =  \frac{1}{2}(7m)(225r^2)\\\\I_2 = 7\times 225[\frac{1}{2}(mr^2)]\\\\I_2 = 1575[\frac{1}{2}(mr^2)]\\\\Recall, \frac{1}{2}(mr^2) = I_1 \\\\I_2 = 1575 I_1

Thus, the moment of inertia will be increased by a factor of 1575

3 0
3 years ago
In this lab, you will use a dynamics track to generate collisions between two carts. If momentum is conserved, what variable cha
BartSMP [9]

In collision type of problems since momentum is always conserved

we can say

m_1v_{1i} + m_2v_{2i} = m_1 v_{1f} + m_2v_{2f}

So here along with this equation we also required one more equation for the restitution coefficient

v_{2f} - v_{1f} = e(v_{1i} - v_{2i})

so above two equations are required to find the velocity after collision

here the change in velocity occurs due to the contact force while they contact in each other

so this is the impulse of collision while they are in contact with each other while in collision which changes the velocity of two colliding objects

8 0
4 years ago
Read 2 more answers
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