We submerge a 32.5-g iron rod , initially at 22.7 oc, into an unknown mass of water at 63.2 oc, in an insulated container. the final temperature of the mixture upon reaching thermal equilibrium is 59.5 oc. what is the mass of the water? for iron, c = 0.449 j/g∙oc; for water, c = 4.184 j/g∙oc.

The percent efficiency of a machine can never be 100% (or greater), because in the real world some energy is always converted into a. heat b. work c. input force d. output force

Give your knowledge of these things in your paper, you will compare and contrast analog and digital signals to determine which is more reliable for encoding and transmitting information. you’ll compare these features: signal shape numerical values for signal measurements amount of data that can be transmitted energy requirements privacy and security (ability of the signal to be encoded in a secret code) clarity of signal in the space provided, write down what you already know about any of these features. if you’re not sure, write down questions you might have about the features.

Ascientific blank must be testable and capable of being proven false?