A virus’s proteins are important because they a. contain genetic material. b. make new virus particles. c. provide energy for the virus. d. help the virus attach to its host. plz help ASAP

Which instrument is used to measure air temperature

A2.00-m long piano wire with a mass per unit length of 12.0 g/m is under a tension of 8.00 kn. what is the frequency of the fundamental mode of vibration of this wire?

During cooling, the kinetic energy of the molecules falls. why does this happen? a.the motion of the molecules increases. b. the motion of the molecules slows down. c.the van der waals forces between molecules decrease d. the forces of attraction between the molecules are overcome.