A 10 gram ball is rolling at 20 m/s. what energy does the ball have

Kinetic

Explanation:

Kinetic energy is energy in motion.

2 joule

Explanation:

10 gram= 0,01kg

The ball has kinetic enegry

K=1/2 *m *speed²

K=1/2 *0,01 * 400

K=2 Joule

1. 1 mole of anything contains 6.022x10^23 pieces  

d  

2. a  

3. c, number  

5. 1.24x10^24atoms / 6.022x10^23atoms/mole = 2moles h2 atoms  

6. fe2br3 mass = 2moles x mass fe + 3 moles x mass br  

molar mass = grams / number of moles = g/mole  

to find moles = g / molar mass  

to find mass = g = molar mass / moles

the formula for the conversion of temperature from degree celsius to kelvin is:

the sample of water at is converted to kelvin temperature by using the above formula as:

on comparing the two samples of water at or we can say that at and at respectively. the difference between the temperatures of two samples of water is:

hence, one can say that the sample of water at is greater than the sample of water at by .