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Questions in physics

[Homework Help] One light beam has wavelength [tex]\lambda_1[/tex] and frequency [tex]f_1[/tex]. Another light beam has wavelength [tex]\lambda_2[/tex] and frequency [tex]f_2[/tex]. Write a proportion that shows how the ratio of the wavelengths of these two light beams is related to the ratio of their frequencies.

[Homework Help] The mean distance from Saturn to the sun is 9 times greater than the mean distance from Earth to the sun. How long is a Saturn year?

[Homework Help] A hydrogen atom has one proton, two neutrons, and no electrons. Is this atom neutrally charged? Explain your answer.

[Homework Help] If a car can go from 0.0 to 60.0 mi/hr in 8.0 seconds, what would be its final speed after 5.0 seconds if its starting speed were 50.0 mi/hr?

[Homework Help] A wave with a large amplitude has a lot of: A. vibration B. speed C. energy

[Homework Help] What does it mean to say that momentum is conserved?

[Homework Help] How much voltage would be necessary to generate 10 amps of current in a circuit that has 5 ohms of resistance?

[Homework Help] If you place one staple on an electronic balance, the balance still reads 0.0 grams. However, if you place 210 staples on the balance, it reads 6.80 grams. What is the mass of one staple?

[Homework Help] A wave has a period of 2 seconds and a wavelength of 4 meters. Calculate its frequency and speed.

[Homework Help] A cart travels down a ramp at an average speed of 5.00 centimeters/second. What is the speed of the cart in miles/hour?