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Questions in physics

[Free] Suppose that you find in a reference book that the volume of all the oceans is [tex]1.4 \times 10^9 \text{ km}^3[/tex]. To find the mass, you can use the density of water, also found in this reference book, but first, you must convert the volume to cubic meters. What is this volume in cubic meters?

[Free] What happens to an object when an unbalanced force acts on it?

[Free] An ocean-going barge is 50.0 m long and 20.0 m wide with a mass of 145 metric tons. Will the barge clear a reef that is 1.50 m below the surface of the water?

[Free] What are the differences and similarities between X-rays and radio waves?

[Free] Energy stored in the nucleus of an atom is called _________.

[Free] An acorn with a mass of 0.0300 kilograms falls from a tree. What is its kinetic energy when it reaches a velocity of 5.00 m/s?

[Free] On a weather map, places that have the same temperature are joined with lines called _____.

[Free] A beam of light has a wavelength of 506 nanometers. What is the frequency of the light? What color is the light?

[Free] A 60 W light bulb at 120 V is left on in your house to prevent burglary. If the power costs 10 cents per kilowatt-hour, how much will it cost to leave the bulb on for 30 days?

[Free] How much time is needed for a car to accelerate from 8.0 m/s to a speed of 22 m/s if the acceleration is 3.0 m/s²?