Which tools would be necessary to determine whether or not a large block will float, without using water?

1. ruler and balance
2. barometer and flask
3. thermometer and beaker
4. granulated cylinder and tongs

The least penetrating form of radiation is

At what time will the interfering waves have an amplitudeof zero?

According to newton’s law of universal gravitation, which statements are true? as we move to higher altitudes, the force of gravity on us decreases. as we move to higher altitudes, the force of gravity on us increases. as we gain mass, the force of gravity on us decreases. as we gain mass, the force of gravity on us increases. as we move faster, the force of gravity on us increases.