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Questions in physics

[Answered] Calculate the electrical energy expended in a device across which the circuit voltage drops by 50 volts when moving a charge of 6 coulombs.

[Answered] Compute the resistance in ohms of a copper block 5.0 cm long and 0.10 cm\(^2\) in cross-sectional area. Given that \(\rho = 1.77 \times 10^{-6}\) ohm-cm.

[Answered] Electrons surround the nucleus of an atom, and those that are in the outer energy levels are: A. less attracted to the nucleus B. more attracted to the nucleus C. not able to conduct a current D. unavailable to interact with other chemicals

[Answered] A pencil is dropped from the roof of the school. What is its speed after 3 seconds if down is the negative direction? Hint: Use the equation for velocity under constant acceleration.

[Answered] Calculate the conductance of a conduit with a cross-sectional area of 3.0 cm\(^2\) and a length of 9.0 cm, given that its conductivity is 0.80 ohm\(^{-1}\)cm\(^{-1}\).

[Answered] Determine the potential difference between two charged parallel plates that are 0.20 cm apart and have an electric field strength of 6.0 V/cm.

[Answered] I don't understand how to get 50000 ohms, please can someone help? I would have just left my answer at 25,000 ohms!

[Answered] Convert 59°C to Fahrenheit.

[Answered] Does the surrounding air become warm or cool when the vapor phase of H2O condenses? Explain.

[Answered] A spoon can sound like a bell. No, this is not a riddle. It's science. Prove it.