If the frequency is 40 and the wavelength is 1.5 what is the speed

A sprinter who is running a 200-m race travels the second 100 m in much less time than the first 100m because

Two cars are traveling along perpendicular roads, car A at 40 mph, car B at 60 mph. At noon, when car A reaches the intersection, car B is 90 miles away and moving toward it. Find the rate at which the distance between the cars is changing at 1 P.

You bring a negatively charged rod close to some tiny pieces of plastic. Some of the pieces jump up to the rod, but as soon as they make contact, they immediately fly away from the rod. Explain.

A train leaves the station heading south on the tracks. It takes the train 5 seconds to reach 50 miles per hour. It completes the entire 100 mile trip in two hours. Calculate the train's average speed and velocity over the two hour trip.

Consider a household that uses 14,000 kWh of electricity and 900 gal of fuel oil, per year, during a heating season. The average amount of CO₂ produced is 26.4 lbm/gal of fuel oil and 1.54 lbm/kWh of electricity.

How do you do this problem 0.00161 cm to mm

Do you have to keep citing the same source

In a periodic table a set of properties repeats from?

Which best states the author's argument in catching sun rays? no power source is clean, free, and renewable. it costs too much to use solar energy for power. the use of solar energy can cause blackouts in big cities.

When an airplane is sitting on the ramp, which of Newton's Laws does it exhibit?