Which of the following pieces of equipment should be used to measure the electron potential difference between two points on an electric circuit? a
Colorimeter
b
Spectrophotometer
c
Voltmeter
d
pH probe

A4.86 g piece of metal was placed in a graduated cylinder containing 15.5 ml of water. the water level rose to 17.3 ml. what is the density of the metal. i need the steps of how to solve it to so i can use a formula to work out other problems.

Convert the temperature of dry ice, –77 ∞c, into degrees fahrenheit and kelvin.

Ariver current has a velocity of 5km/h relative to the shore, and a boat moves in the same direction as the current at 5 km/h relative to the river. how can the velocity of the boat relative to the shore be calculated?