What is the wavelength (in kilometers) of the 56,500-Hz radio wave used clocks and wristwatches? Give your answer to the by "radio-controlled" hundredths place.

If the speed of light is 3.00  105 km/s, how many kilometers are in a light-year?  How many centimeters are in a light-year?

Delay time for communication between GEO satellites and Earth. Use the relationship between distance (d), time (t) and speed (v), d = vt to repeat the calculation we did in class, but this time using the English units. Use the fact that GEO satellites orbit at 22,236 miles above Earth's equator, and that the speed of light is 1.86 x 105 mi/s. (Note that both of these values are equivalent to those used in class.) You may want to write this calculation on paper and insert a photo here.

A radio transmitter broadcasts at a frequency of 113kHz. What is the wavelength of the wave? (Speed of light in vacuum: c= 3 x 10^8 m/s) Calculate to 1 decimal.

The charger cord used to recharge a cell phone contains a transformer that reduces 120 V AC to 5 V AC. For each 1,125 turns in the input coil, how many turns are there in the output coil? (Round your answer to at least one decimal place.) turns

A message was sent from Mars to Earth. Mars is approximately 54.6 million kilometers away from the earth. How long did the message travel to reach earth if the astronomers used radio waves?

If a wave has a wavelength of 15m and a frequency of 1.500 KHz, what is itsspeed?

You install solar power in your home, and the solar panel costs $500 and is capable of producing 3 Million joules of energy each day. If electrical costs are $0.15/kilowatt hour, a kilowatt is equal to 1000 watts, and there are 3600 joules in 1 watt hour, how long will it take for the solar panel to pay for itself in electrical savings?

Google Maps A submarine sends a sonar signal, which returns from another ship 7 seconds later. How far away is the other ship if the speed of sound in seawater is 1,530 meters/second? Next

Bookmarks Profiles Tab Window story Bookmarks omu XM Chapter 3: Homework 1 (3.2, 3 X WP NWP Assessment Builder UI A X WP Question 1 of 9 - Chapter 3: H X + m/was/ui/v2/assessment-player/index.html?launchid=5eb1427e-a9f1-4719-a37f-b1ab9d4339aa#/question/0 Question 1 of 9 Part 2 g = X Your answer is incorrect. The Sun has a mass of 2 x 1030 kg and the distance from the Sun to Mars is 2.3 x 10¹¹ m. If Mars had no mass, there would still be a small gravitational force on an object near Mars's surface, due only to the Sun. What would be the value of g on (massless) Mars, due to the gravitational force of the Sun? Assume that Mars's radius is negligible compared to the distance between the Sun and Mars. i Hint - F2 eTextbook and Media Window Help F3 This problem is equivalent to assuming that there is a spherical surface surrounding the Sun, and finding the value of g on that surface. The radius of the surface is the same as the distance from Sun to the other body. OCT 20 80 N/kg F4 את % 5…