What is one standards kilogram

Which of the following would not be a good fuse design?

a glass rod obtains a positive chartge from being rubbed by silk. Is this due to the glass gaining protons, or losing electrons?

2. A 60 N net force is applied to a 12 kg box. What is the acceleration of the box?

Is The neck is an example of a simple machine in the human body?

What is the kinetic energy of an object that has mass of 30 kilograms and move with a velocity of 20 m/s

How many earth years does it take mars to orbit the sun

Which represents a system that is almost completely closed?

If many household substances classify as acids or bases what is the ph scale

A protostar forms once the nebular cloud condenses and the core begins

How do whales bats and dolphins use echolocation? A To scare away predators B To attract mates C To orient them selves and find food D To tell animals of there species where they are