How much work is done on an object is 10 N of force are applied to the object and it moves 2 meters? A) 0.2 Joules
B) 5 Joules
C) 8 Joules
D) 20 Joules

option D=20 J      

Explanation:

work done= fxd ( force x distance )

work done=10 x 2

                   = 20 J      

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

what is the average time it took the car to travel 0.25 meters?

⇒ 2.23 seconds

what is the average time it took the car to travel 0.50 meters?

⇒ 3.13 seconds