PLEASE HELP Two railway carriages collide and move off together. Carriage A has a mass of 12,550 kg and
moves at 5.2 m/s before the collision. Carriage B has a mass of 8.200 kg and is stationary before
the collision. What is the velocity of the two carriages after the collision?

Identify the type of synthetic material used in each object

Which of the following harmful chemicals are found in tobacco smoke? a. carbon monoxide b. carbon dioxide c. nicotine b. carbon dioxide d. both a and c

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.