A voltmeter measures the difference in electric potential from one probe to the other. A voltmeter reading of 9 means that the red probe is touching a point in the circuit where the potential is 9 V higher than the point the black probe is touching. Sometimes we refer to voltage as the potential difference, since rather than telling us the value at one point it tells us about the difference between two points. Each of the circles where the wires and/or batteries connect is a point where you can touch the probe. First switch sides with the red and black probes. Cross them over so that they touch the batteries on the opposite side from your previous measurement. What changes

Curious carl calculated the density of a cube to be 4.50 g/cm3. what is the density of the cube in g/l?

1.in one challenge on the titan games, competitors have to lift 200 pounds up a long ramp. angel is able to move the weight in 42 seconds. anthony gets it done in only 38 seconds. which statement is true? angel has more power than anthony. angel does more work than anthony. anthony does more work than angel. anthony has more power than angel. 2.a mountain climber exerts 41,000 j of work to climb a cliff. how much power does the climber need if she wants to finish in only 500 seconds? power = work / time 20,500,000 watts 82 watts 0.0122 watts 41,500 watts 3.your family is moving to a new apartment. while lifting a box 83 joules of work is done to put the box on a truck, you exert an upward force of 75 n for 3 s. how much power is required to do this? (hint: you only need two of the 3 numbers given! ) power = work / time 249 watts 25 watts 2075 watts 27.7 watts

Unpolarized light of intensity so passes through two sheets of polarizing material whose transmission axes make an angle of 60∘ with each other as shown in the figure. what is the intensity of the transmitted beam, st?