When a beam of light passes at an oblique angle into a material of lower optical density, the angle of incidence is
a. less than the angle of reflection.
b. less than the angle of refraction.
c. greater than the angle of reflection.
d. greater than the angle of refraction.

Ameter stick is pivoted at the 0.50-m line. a 3.0-kg object is hung from the 0.15-m line. where should a 5.0-kg object be hung to achieve equilibrium (the meter stick oriented horizontal and motionless)?

Two students, each riding bicycles, start from the same apartment building and ride to the same building on campus, but each takes a different route. the first student rides 1100 m due east and then turns due north and travels another 1430 m before arriving at the destination. the second student heads due north for 1930 m and then turns and heads directly toward the destination.at the turning point, how far is the second student from the destination?

70 give a real life example showing how sensory neurons work with the motor neurons