What happens when an atoms losses an electron-

kaheart [24]

Answer:

Yes, I'm pretty sure it is. That's why I don't click on it!

6 0

3 years ago

An atom of uranium 238 emits an alpha particle (an atom of He) and recoils with a velocity of 1.895 * 10^ 5 m/sec . With velocit

lora16 [44]

Answer: The velocity of released alpha particle is $1.127\times 10^7m/s$

Explanation:

According to law of conservation of momentum, momentum can neither be created nor be destroyed until and unless, an external force is applied.

For a system:

$m_1v_1=m_2v_2$

where,

$m_1\text{ and }v_1$ = Initial mass and velocity

$m_2\text{ and }v_2$ = Final mass and velocity

We are given:

$m_1=238u\\v_1=1.895\times 10^{5}m/s\\m_2=4u\text{ (Mass of }\alpha \text{ -particle)}\\v_2=?m/s$

Putting values in above equation, we get:

$238\times 1.895\times 10^5=4\times v_2\\\\v_2=\frac{238\times 1.895\times 10^5}{4}=1.127\times 10^7m/s$

Hence, the velocity of released alpha particle is $1.127\times 10^7m/s$

4 0

3 years ago

When a charged capacitor is connected to earth, it discharges and the voltage V across it will decrease according to the equatio

algol [13]

Thank you for posting your question here at brainly. I hope the answer will help you. Feel free to ask more questions here.

For convenience write RC=D and solve the ODE dV/dt=-V/D which gives
V=Ae^(-t/D) by separating the variables. 
When t=0, V=10 and this gives A=10, 
when t=2, V=1 giving 1=10e^(-2/D) and you can find D by taking lns of 
each side. D=RC, so R=D/C 
You should get 2.90X10^5 ohms

4 0

4 years ago

If I push on the wall with 75 Newtons of force, the wall will push back with ______

Sauron [17]

Answer:

(F)reaction = - 75 N

where, negative sign shows opposite direction.

Explanation:

This question can be answered using Newton's third law of motion. The Newton's Third Law of Motion states that for every action force there is an equal but opposite reaction force.

(F)action = - (F)reaction

Hence, in our scenario if we consider the 75 Newton force applied on the wall to be the action force then the reaction force of the wall must be equal to it in opposite direction. Therefore, the reaction push of the wall must be equal to 75 N.

(F)reaction = - 75 N

where, negative sign shows opposite direction.

6 0

3 years ago

Some of the principal minerals commonly found in igneous rocks are

Verdich [7]

I believe that the answer is C. Hope this Helps:)))

3 0

3 years ago