A car travels 60km in 45 minutes. At the same average speed, how far will it travel in 1 hour 30 minutes?​

Aparticle travels in a circular orbit of radius 21 m. its speed is changing at a rate of 23.1 m/s2 at an instant when its speed is 37.2 m/s. what is the magnitude of the acceleration (in m/s? ) of the particle?

What component of earth’s atmosphere exists entirely as a result of photosynthesis?

If the specific heat of a metal is 0.850 j/g °c, what is its atomic weight?