The diagram shows a pencil in a glass of water.
when viewed from the side, the pencil appears to be broken. what process causes this to happen?
a)
evaporation
b)
refraction
c)
absorption
d)
reflection

Amachinist turns the power on to a grinding wheel, at rest, at time t = 0 s. the wheel accelerates uniformly for 10 s and reaches the operating angular velocity of 96 rad/s. the wheel is run at that angular velocity for 40 s and then power is shut off. the wheel slows down uniformly at 1.5 rad/s2 until the wheel stops. in this situation, the time interval of deceleration is closest to:

Give one example to show that when substances are mixed,it may result in a chemical or a physical change depending on the conditions.

Two point charges are separated by a certain distance. how does the strength of the electric field produced by the first charge, at the position of the second charge, change if the second charge is doubled? a. the field does not change b. the field strength decreases by half. c. the field strength doubles d. the field strength quadruples