Which state of matter is made up of atoms and molecules that are able to move with complete freedom and collide with each other and with the walls of their container?

A. gas

B. solid

C. liquid

D. plasma

Many people are blaming the fast food industry for the growing obesity problem. Who do you think should be responsible to reduce the obesity problem?

What is the mass number of atoms with 5 protons and 7 neutrons?

What elements make gas

A 920 kg block is pushed on the slope of a 30 frictionless inclined plane to give it an initial speed of 50 cm/s along the slope when the block is 2.3 m from the bottom of the incline. The acceleration of gravity is 9.8 m/s2.

What type of energy is it when rain falls?

Roger sees water balloons fall past his window. He notices that each balloon strikes the sidewalk 0.51 s after passing his window. Roger's room is on the second floor, 10 m above the sidewalk.

Which statements accurately describe the Doppler effect?

Describe how mass and distance affect gravitational force.

a bike can climb the inclined road at uniform speed of 72 km/hr by applying force 500N what will be the power applied by the bike?

A wave has a wave length of 2 m and a frequency of 500 Hz, what is its speed?