Question

true and false

1) Parts of machines rub against one another when they are used
1)false
2)true

2)Gravitational force is a contact force.
1)false
2)true

3)Only Earth has moon in the whole solar system
1)false
2)true​

Answer 1

Answer:

1. True
2. False
3. True

plse mark as brain least

Answer 2

Answer:

1) Parts of machines rub against one another when they are used.

>> True

2)Gravitational force is a contact force.

>> False

3)Only Earth has a moon in the whole solar system.

>> False