Melting, freezing, and boiling changes phase state compound nuclear wouldnt it be state because it is till water

A2000 kg car is rounding a curve of radius 200 m on a level road. the maximum frictional force the road can exert on the tires of the car is 4000 n. what is the highest speed at which the car can round the curve?

Matter is needed to transfer thermal energy bya. conductionb. convectionc. radiation d. both a & b.

Select all the correct answers. which three statements about electromagnetic radiation are true?