The freezing point and the boiling point of water can be altered by a
variety of techniques. which of the following has little or no effect on the
boiling point of water?
a increasing the air pressure above the liquid
b adding alcohol to the water
c adding sodium chloride to the water
d increasing the amount of water

The image shows a pendulum in simple harmonic motion the pendulum starts at a and swing to e

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:

Ne way in which elements differ from each other is the structure of the electron cloud in each element's atoms. in an electron cloud, an electron that is farther away from the nucleus has