An object thrown vertically upwards reaches a height of 500m. what was its initial velocity? how long will the object take to come back to the earth?Assume g=10m/s^2. (ans:100m/s and 20s)​

How do hydroponic plants differ from nonhydroponic plants? a.) hydroponic plants can grow in a dryer soil. nonhydroponic plants grow in moist soil. b.) hydroponic plants grow on other plants and are known as air plants. nonhydroponic plants do not grow on other plants. c.) hydroponic plants can only grow in rain forests. nonhydroponic plants cannot grow in rain forests. d.) hydroponic plants are grown without soil. nonhydroponic plants are grown in soil.

Why do electron microscopes have higher resolving power than light microscopes?

A-of 75 cm by cm by 17.5 cm up. of is 2 kg a , in ,if it is in , kg/?