Physics, 03.12.2019 18:31 gwoodbyrne
7. a block of copper of unknown mass has an initial temperature of 65.4oc. the copper is immersed in a beaker containing 95.7g of water at 22.7oc. when the two substances reach thermal equilibrium, the final temperature is 24.2oc. what is the mass of the copper block?
Answers: 2
Physics, 22.06.2019 09:30, looloo273
Asap i'm in class rn a 1,000-kg car is traveling 20 m/s on a flat stretch of road. it gets to a hill and coasts uphill until it stops. how high up the hill does the car travel? givens: equation: 1/2mv2initial=mghfinal solve for h. plug & chug, label.
Answers: 2
Physics, 22.06.2019 16:50, justkevin1231
Aresistor with an unknown resistance is connected in parallel to a 9 ω resistor. when both resistors are connected in parallel to an emf source of 21 v, the current through the unknown resistor is measured with an ammeter to be 4 a. what is the resistance of the unknown resistor? answer in units of ω.
Answers: 3
Physics, 22.06.2019 17:30, joejoefofana
Atruck driver is attempting to deliver some furniture. first, he travels 8 km east, and then he turns around and travels 3 km west. finally, he turns again and travels 13 km to his destination. what is the drivers distance
Answers: 3
7. a block of copper of unknown mass has an initial temperature of 65.4oc. the copper is immersed in...
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