All categories

3 years ago

What are the 3 basic parts of an atom and what are their charges?

Physics

1 answer:

kotegsom [21]3 years ago

7 0

Answer:

electrons neutrons and protons

Explanation:

electron are negative

nuetron are neutral

protons are positive

You might be interested in

An object is traveling at a constant velocity of 10m/s for 4 seconds. What is its acceleration?

saw5 [17]

Answer:

<h2>The answer is 2.5 m/s²</h2>

Explanation:

The acceleration of an object given it's velocity and time taken acting on it can be found by using the formula

$acceleration = \frac{velocity}{time} \\$

From the question

time = 4 s

velocity = 10 m/s

So we have

$acceleration = \frac{10}{4} = \frac{5}{2} \\$

We have the final answer as

Hope this helps you

5 0

4 years ago

A wheel rotating with a constant angular acceleration turns through 22 revolutions during a 5 s time interval. Its angular veloc

sesenic [268]

Answer:

0.52rad/s^2

Explanation:

To find the angular acceleration you use the following formula:

$\omega^2=\omega_o^2+2\alpha\theta$ (1)

w: final angular velocity

wo: initial angular velocity

θ: revolutions

α: angular acceleration

you replace the values of the parameters in (1) and calculate α:

$\alpha=\frac{\omega^2-\omega_o^2}{2\theta}$

you use that θ=22 rev = 22(2π) = 44π

$\alpha=\frac{(12rad/s)^2-(0rad/s)^2}{2(44\pi)}=0.52\frac{rad}{s^2}$

hence, the angular acceñeration is 0.52rad/s^2

3 0

3 years ago

You are standing on a sheet of ice that covers the football stadium parking lot in Buffalo; there is negligible friction between

Fudgin [204]

Answer:

$(a)\;V=0.058\;m/s\\(b)\;v_{2f}=0.1002\;m/s$

Explanation:

Given,

Mass of ball $m_{1}=0.4$ kg

Speed of ball $v_{1i}=11$ m/s

Mass of persona $m_{2}=75$ kg

(a) The person is at rest initially. So, by the conservation of momentum

$p_{i}=p_{f}\\m_{1}v{1i}+m_{2}v_{2i}=(m_{1}+m_{2})V\\0.4\times 11+75 \times0=(0.4+75)V\\V=0.058\;m/s$

(b) Final speed of ball $v_{1f}=-7.8\;m/s$

$p_{i}=p_{f}\\m_{1}v{1i}+m_{2}v_{2i}=m_{1}v{1f}+m_{2}v_{2f}\\0.4\times 11+75 \times0=0.4\times(-7.8)+75v_{2f}\\v_{2f}=0.1002\;m/s$

3 0

4 years ago

Read 2 more answers

At 90°C. you dissolved 10 g of KCI in 100. g of water. Is this solution saturated or unsaturated?

Feliz [49]

Answer:

B. unsaturated

Explanation:

6 0

3 years ago

6. One minute after takeoff, a rocket carrying the space shuttle into outer space reaches a speed of 447 m/s.

Sidana [21]

Answer:

acceleration of the rocket is given as

$a = 7.45 m/s^2$

Explanation:

As we know that rocket starts from rest and then reach to final speed of 447 m/s after t = 1 min

so we have

$v_i = 0$

$v_f = 447 m/s$

$t = 1 min = 60 s$

so we have

$a = \frac{v_f - v_i}{t}$

$a = \frac{447 - 0}{60}$

$a = 7.45 m/s^2$

7 0

3 years ago