Graduated Cylinder

• The graduated cylinder measures volume of liquids.

• Always measure from the bottom of the curve (the meniscus). (56 ml)

WHat is the

Momentum

What is the momentum at 2.75 seconds. (Track your finger over across the bottom to 2.75, then track your finger up until you reach the line, then track your finger over until you get to the X axis.

Which one results in the fastest rotation of Spindle 2? (H) – since spindle 2 is real small

and Spindle 1 is real big.

Which is a properly balanced system? (Multiply the 2 numbers on each side together – the

product of both sides should be equal)(3.0 * 48) = 144 1.5 (96) = 144

• 2 skaters push off from each other over a period of 1.2 seconds. What is the force of the push by the smaller skater? (40 * 2.5)

Which level requires the least effort to lift the load? (F – since it is the longest

fulcrum arm)

Volume

Beaker Graduated Cylinder Flask Test Tube

When picking equipment……you have to choose the one that will show the measurement the most precisely.

Accuracy

• What was the most accurate trial?

• Reactants mass should equal the product’s mass

Pressure

• According to the data below, the pressure of the block is a measure of the block’s? (weight distributed over an area)

Power

• A woman lifts a 57 Newton weight a distance of 40 centimeters each time she exercises. It takes her 0.6 seconds to lift the weight. How much power does she use to lift the weight one time?

2 formulas are needed

Work = F (D) = 57 (.40 cm) = 22.8

Power = Work /time = 22.8 / 0.6 = 38 watts

Momentum• The 500 g cart is

moving in a straight line at a constant speed of 2 m/s. Which of the following must the 250 g toy car have in order to maintain the same momentum as the cart?

P = MV = 500 (2) = 1000

P = MV = 250 (V) = 1000