Which characteristic of sound makes it possible for bats to fly in the dark without hitting any objects? A. refraction

B. reflection

C. conduction

D. amplification

Which produce would best increase the amount of heat energy that is actually gained by calorimeter b

The blackbody curve for a star name zeta is shown below. what is the peak wavelength for this star ?

The twister and runaway train are two coasters at the same amusement park. both coasters start at the same height. the coaster for the twister is twice the mass of the coaster for the runaway train. which roller coaster has greater gravitational potential energy at the start of the ride?