1. how is the density of a substance calculated? 2. if the shape of an object is irregular, like a stone, how can you measure its volume? 3. if the volume of a cube of wood is15.625 cm3 and its mass is 10.00 grams, show the calculation for the density of the wood. 4. based on the density of the wood that you calculated above, would the wood float or sink if it is placed in a bowl of water? explain your answer. remember that the density of liquid water is 1.00 g/cm3. 5. a marble or small sphere, made of stone, is found to have a mass of 3.05 grams.

Truck traveling west on the highway experiences an acceleration to the east. what could be the cause of this acceleration

Write a hypothesis about the effect of increasing resistance on the current in the circuit. use theformat and be sure to answer the lesson question. “how do changes in voltage or resistance affect current in an electric circuit? ”

The dipole moment of the water molecule (h2o) is 6.17x10^-30 c.m. consider a water molecule located at the origin whose dipole moment p points in the +x-direction. a chlorine ion ( of charge-1.60x10^-19c , is located at x=3.00x10^-9m . assume that is much larger than the separation d between the charges in the dipole, so that the approximate expression for the electric field along the dipole axis can be used. a) find the magnitude of the electric force that the water molecule exerts on the chlorine ion. b) what is the direction of the electric force. -x-direction or +x-direction c) is this force attractive or repulsive?