Density is 1.3kg/m3 volume=? mass=? 80m 40m 15m

Which statements about tornadoes are true? check all that apply. (a) about 12,000 tornadoes hit the united states every year. (b) a tornado looks like a funnel. (c) tornadoes are deadly atmospheric storms that cause millions in damages each year. (d) tornadoes can reach wind speeds of more than 300 miles per hour. (e) kansas is the state with the most tornadoes. (f) you will always notice a funnel before a tornado strikes.

When the force acting on an object points at least partially in the direction of the motion the work done is considered to be negative

Which is not true about oxygen-17 and oxygen-18?