Ideally, when a thermometer is used to measure the temperature of an object, the temperature of the object itself should not change. however, if a significant amount of heat flows from the object to the thermometer, the temperature will change. a thermometer has a mass of 30.3 g, a specific heat capacity of c = 827 j/(kg c°), and a temperature of 11.9 °c. it is immersed in 128 g of water, and the final temperature of the water and thermometer is 41.8 °c. what was the temperature of the water in degrees celsius before the insertion of the thermometer?

Achemical reaction (also known as a chemical change) produces substances that are chemically different from the starting materials. an example of a chemical reaction is the formation of water from hydrogen and oxygen gas. in a physical change, a substance changes its physical appearance but not its chemical identity. an example of physical change is the formation of liquid water from solid water, a familiar process called melting. physically, liquid water looks very different from solid water (ice) but the chemical identity, water, is the same for both. which of following changes that affect the composition of our atmosphere involve physical changes and which involve chemical reactions? oxygen gas changes to ozone during thunderstorms carbon dioxide is produced by the combustion of gasoline in an automobile engine. when coal, oil, and natural gas are decomposed in landsills they produce methane gas. freezing rain develops when a warm air mass overrides a cold air mass. fog forms from water vapor when the temperature drops below the dew point

The three types is stress that act on earths rocks are compression, tension, and

What is the wavelength of a wave with a velocity of 50 m/s and a frequency of 5hz a 250 m b 0.1 m c 10m d 0.01 m