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4 years ago

Which statement is true with respect to an atom?

2 answers:

7 0

The statement that is true concerning an atom would be C. The atomic number of an atom is equal to the number of protons.

Allushta [10]4 years ago

6 0

<span>C.) The atomic number of an atom is equal to the number of protons.

The atomic number represents the equal number of protons and electrons in an element.</span>

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The waste products of a nuclear fusion power plants can be best described as

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They can be described as small in quantity and very dangerously radioactive.

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3 years ago

Read 2 more answers

A 20 g ball of clay traveling east at 4.5 m/s collides with a 45 g ball of clay traveling north at 2.0 m/s. You may want to revi

german

Answer:

The ball travels with a speed of 1.96 m/s in a North East direction

Explanation:

Based on the law of conservation of linear momentum, we have that

$m_{1}v_{1}+m_{2}v_{2}=(m_{1}+m_{2})v$

Since this problem involves motion in both the x and y coordinates, we will solve it in the separate coordinates, and then find the resultant as our answer.

Momentum in the x- direction

in the x direction, $v_{2}= 0$ . this makes $m_{2}v_{2}=0$

hence we have

$20\times4.5=65v_{x}$

$v_{x}=1.385m/s$

Momentum in the y- direction

in the y direction, $v_{1}= 0$ . this makes $m_{1}v_{1}=0$

hence we have

$45\times2.0=65v_{y}$

$v_{y}=1.385m/s$

The resultant of the two vectors can be found using Pythagoras' theorem

$v=\sqrt{1.385^{2}+1.385^{2}} =1.959$

The direction of the resultant vector is found as

$Tan^{-1}(\frac{1.385}{1.385})=45degrees$

Hence the ball moves with a velocity of 1.96m/s in a North East direction

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3 years ago

Scenario: You place a mug of hot tea on the table in a cool room.

Shkiper50 [21]

A. Radiation, conduction

B.
*Radiation will occur between the mug of hot tea and the room
*conduction will occur between the mug of hot tea and the table

C. The table as well as the surrounding air will become warmer.
This is because heat is given off from the mug of hot tea.

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3 years ago

A belt of negligible mass passes between cylinders A and B and is pulled to the right with a force P. Cylinders A and B weigh, r

V125BC [204]

Answer:

(a) whether slipping occurs between the belt and the cylinder i think is the answer dont hate if you get it wrong please and thank you.

Explanation:

i am just guessing otay.

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3 years ago

Help me frfr I don’t understand

Art [367]