You are flying a plane from Askaban to Cherryville (N65E). The wind is coming from N20W at 60 km/h. What should your speed relative to the still air and heading be if you are to make the 500km trip in 1h 15min?

The magnitude, m, of an earthquake is defined to be m=log l/s, where i is the intensity of the earthquake (measured by the amplitude of the seismograph wave) and s is the intensity of a “standard” earthquake, which is barely detectable. what is the magnitude of an earthquake that is 1,000 times more intense than a standard earthquake? use a calculator. round your answer to the nearest tenth.

Adriveway is 40 yards long about how many meters long is it

The? half-life of a radioactive substance is 20 years. if you start with some amount of this? substance, what fraction will remain in 120 ? years