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postnew [5]
4 years ago
12

Could anyone help with this question I do

Physics
2 answers:
ra1l [238]4 years ago
8 0
<span>which of those can we not get back once it has been used, the answer is oil or petroleum</span>
dedylja [7]4 years ago
7 0
That is a very good question and i think i know the answer but am not sure. C sunlight because once you use sunlight you cant use it again and again
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Question 4 Unsaved If element X has 93 protons, how many electrons does it have? Your Answer:
9966 [12]
It have 93 electrons
8 0
4 years ago
An atom with an imbalance of electrons to protons is
alexdok [17]
<h2>Answer: Ion </h2>

An ion is an atom that is electrically charged by <u>gaining or losing one or more electrons. </u>

To understand it better:

An atom has a nucleus with electrons around it and has a neutral charge. When an electron is added or detached, this atom is electrically charged, that is, it ceases to have a neutral charge and becomes an <u>ion</u>.

In this sense, there are two types of ions:

-Anions: ions negatively charged, by the gain of electrons in the atom.

-Cations: ions positively charged, by the loss of electrons in the atom.

7 0
4 years ago
In an "atom smasher," two particles collide head on at relativistic speeds. If the velocity of the first particle is 0.741c to t
USPshnik [31]

Answer:

W_x = 0.9156\ c

Explanation:

given,

velocity of particle 1 = 0.741 c to left

velocity of second particle = 0.543 c to right

relative velocity between the particle = ?

for the relative velocity calculation we have formula

W_x = \dfrac{|u_x - v_x|}{1-\dfrac{u_xv_x}{c^2}}

u_x = 0.543 c

v_x = - 0.741 c

W_x = \dfrac{0.543 c - (-0.741 c)}{1-\dfrac{(0.543 c)(-0.741 c)}{c^2}}

W_x = \dfrac{0.543 c +0.741 c)}{1+\dfrac{(0.543)(0.741)c^2}{c^2}}

W_x = \dfrac{1.284c}{1+0.402363}

W_x = 0.9156\ c

Relative velocity of the particle is W_x = 0.9156\ c

5 0
3 years ago
Un ascensor sube con una velocidad constante de 2 m/s. Un niño que va en el ascensor lanza una piedra de 0.6 kg hacia arriba con
Natasha_Volkova [10]

Answer:

W = 7.5 J

Explanation:

W = KE

W = ½mv² = ½0.6(5²) = 7.5 J

Niño, piedra y ascensor están todos en el mismo marco de referencia inercial.

los 2 m / s no son importantes.

6 0
3 years ago
A cart rolling down an incline for 5.0 seconds has an acceleration of 4.0 m/s .If the cart has an initial speed of of 2.0 m/s ,w
Lubov Fominskaja [6]

Applying

v=u+a.t

(all the symbols are bearing their conventional meaning)

Here,u=2ms−1,t=5,a=4ms−2

So,v=2+4⋅5=22ms−1

<h2><u>Mark as Brainliest</u></h2>
8 0
3 years ago
Read 2 more answers
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