How long does it take a 1.51 * 104 W steam engine to do 8.72 * 106 J of work? Round your answer to three significant figures.

A guitar string is 1.75 m. Calculate the wavelength of the 78th harmonic * A) 78 m B) 0.02 m C) 0.04 m D) 0 44.60

How many places are there for electrons in the second shell of an atom?

uppose the weights of Farmer Carl's potatoes are normally distributed with a mean of 9 ounces and a standard deviation of 0.8 ounces. (a) Carl only wants to sell the best potatoes to his friends and neighbors at the farmer's market.

A railroad car with a mass of 30,000 kg is moving at 2.0 m/s when it runs into an at-rest freight car with an equal mass. the cara lock together. what is their final velocity? A. 2.0 m/s B. 0.5 m/s C. 60,000 kg-m/s D. 1.0 m/s

A carbon resistor is to be used as a thermometer. On a winter day when the temperature is 4.00 ∘C, the resistance of the carbon resistor is 217.0 Ω. What is the temperature on a spring day when the resistance is 215.

Which is a disadvantage of using wind as an energy source? Check all that apply. It may be unreliable. It is not naturally occurring. It produces a lot of waste. It requires wires to carry electricity. It generates large amounts of electricity.

One step in the production of hydroelectric power involves

A pot is heated on a stove. The water begins to boil rabidly. Which explains why the water is boiling fast?

A galvanometer can be calibrated to read electric A) current B) Voltage C) either of these D) neither of these

Why do responsible consumers use credit and credit cards?