Which subatomic particle has a positive charge options: A. Neutron
B. Electron
C. all of the above
D. Proton

What do you think car designers do if the damage caused by a crash test is too severe?

In a simplified model of the human eye, the aqueous and vitreous humors and the lens all have a refractive index of 1.40, and all the refraction occurs at the cornea, whose vertex is 2.60 cm from the retina. what should be the radius of curvature of the cornea such that the image of an object 40.0 cm from the cornea’s vertex is focused on the retina?

What is the relationship between the direction of motion of the balloon and the wind currents