How does noise affect a signal? A) It causes the signal to deteriorate.

B) It amplifies the signal.

C) It allows the signal to travel further.

D) It changes the signal as it moves from one medium to another.

An object is dropped from a tower, 400 ft above the ground. the object's height above ground t seconds after the fall is s(t)equals400 minus 16 t squared. determine the velocity and acceleration of the object the moment it reaches the ground. the velocity of the object the moment it reaches the ground is nothing ft/s.

If steel is more dense that lake water, why can a boat float

Because light travels in a straight line and casts a shadow, isaac newton hypothesized that light is