The protein found in red blood cells that give blood its color.

Which type of electromagnetic waves are dangerous enough to be used to kill cancerous cells? (a)gamma rays (b)visible light (c)infrared light (d)microwaves

1400 kg car has a speed of 27 m/s. if it takes 7 s to stop the car, what is the impulse and the average force acting on the car?

Which is the best for showing percentages of different types of cars sold(gas hybrid , electric , other ) in the united states ?