Who thought that atoms were like smooth, hard balls that could not be broken into smaller pieces?

In the Bohr model of the hydrogen atom, an electron moves in a circular path around a proton. The speed of the electron is appro

Zolol [24]

This is an incomplete question, here is a complete question.

In the Bohr model of the hydrogen atom, an electron moves in a circular path around a proton. The speed of the electron is approximately $2.15\times 10^6m/s$ ?

Find the force acting on the electron as it revolves in a circular orbit of radius $5.34\times 10^{-11}m$ .

Answer : The force acting on electron is, $7.9\times 10^{-8}N$

Explanation :

Formula used :

$F=\frac{mv^2}{r}$

where,

F = force acting on electrons

m = mass of electrons = $9.1\times 10^{-31}kg$

v = speed of electron = $2.15\times 10^6m/s$

r = radius of circular orbit = $5.34\times 10^{-11}m$

Now put all the given values in the above formula, we get:

$F=\frac{(9.1\times 10^{-31}kg)\times (2.15\times 10^6m/s)^2}{5.34\times 10^{-11}m}$

$F=7.9\times 10^{-8}N$

Thus, the force acting on electron is, $7.9\times 10^{-8}N$

8 0

3 years ago

Which of the following is the correct way to balance the following chemical question:

vitfil [10]

Answer:

i have no answer for part A

part B

the one that has a 4 can be divided by 2 because reducing

part c

you can determine if an equation is written in the correct way by balancing the equation as if it had not been done already.

4 0

3 years ago

___is a measure of the change in velocity of a

Olegator [25]

Acceleration is a measure of the change in velocity of a moving object. :)

6 0

3 years ago

Which of the following statements are true about the international system of measurement?

Gnom [1K]

The full question is:
Which of the following statements are true about measurements and units?
A. The SI Unit is used by scientists all over the world.
B. The unit of mass in the SI system is the kilogram.
C. Measurements do not need to include units.
D. The English system of measurements is based off of the powers of ten.
The correct answer is A. The SI Unit is used by scientists all over the world. The International System of Units is the metric system which consists of units of measurement. There are 7 main units: ampere, Kelvin, second, meter, kilogram, candela, mole and 22 derived units.

6 0

4 years ago

Read 2 more answers

The sanlinity of ocean water

Diano4ka-milaya [45]

Answer:

35g/l

Explanation:

Salinity is practically the saltiness of the water, in basic terms. It's basically the amount of salt dissolved in water. Ocean water has a salinity of around 35g/l (that's about 3.5% of which is dissolved salt in water!). However, Atlantic Ocean (the ocean with the saltiest water), can range up to 37g/l.

Feel free to mark this as brainliest :D

4 0

3 years ago