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3 years ago

Ions that carry a positive charge are called

Physics

1 answer:

Musya8 [376]3 years ago

3 0

B) Cations

Cations have a positive charge because they have fewer electrons than protons.

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‼️PLEASE ANSWER WILL MARK BRAINLIEST‼️

Ahat [919]

Answer:

b 1000

if you multiply 2m/s by 500 you get 1000 it should look like this.

500 x 2m/s

6 0

2 years ago

Determine the power of 600 joules of work done in 4 seconds.

suter [353]

Power = change in work/change in time

P = 600 joules/ 4 seconds

P= 150 watts

hope this helps :)

7 0

3 years ago

Read 2 more answers

I need some help with #2 and #3 please. <br><br><br><br> Thank you.

Serjik [45]

Well for number 2, the difference is one tells people to get ready, and one tells people it's there already.(mainly watch is a better version of a warning.

6 0

3 years ago

Velocity has two pieces of information.what are they

seraphim [82]

They are speed and direction.

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4 years ago

A small rock is thrown straight up from the edge of the roof of an 8.00 m tall building with an initial speed vo . The speed of

Serjik [45]

Answer:

20.47 m/s

Explanation:

t = Time taken

u = Initial velocity

v = Final velocity

s = Displacement

a = Acceleration

g = Acceleration due to gravity = 9.81 m/s² = a

$v^2-u^2=2as\\\Rightarrow s=\dfrac{v^2-u^2}{2a}\\\Rightarrow s=\dfrac{24^2-0^2}{2\times 9.81}\\\Rightarrow s=29.3577\ m$

Total height of the fall is 29.3577 m

Height the ball reached above the building is $29.3577-8=21.3577\ m$

$s=ut+\frac{1}{2}at^2\\\Rightarrow 21.3577=0t+\frac{1}{2}\times 9.81\times t^2\\\Rightarrow t=\sqrt{\frac{21.3577\times 2}{9.81}}\\\Rightarrow t=2.0866\ s$

Time taken to reach the point from where the ball was thrown is 2.0866 s

This will also be the time it takes the ball to reach the maximum height

$s=ut+\frac{1}{2}at^2\\\Rightarrow u=\dfrac{s-\frac{1}{2}at^2}{t}\\\Rightarrow u=\dfrac{21.3577-\frac{1}{2}\times -9.81\times 2.0866^2}{2.0866}\\\Rightarrow u=20.47\ m/s$

The initial velocity with which the rock was thrown was 20.47 m/s

7 0

3 years ago