Jai-anne who has a mass of 45 kilograms, climbed 3 m up a ladder to rescue her cat from a tree. how much work against gravity did she do?

The earth remains in orbit around the sun due to the force of gravity. how does the force of gravity exerted by the sun on the earth compare to the force of gravity exerted by the earth on the sun?

Abookcase has a mass of 38 kg and the coefficient of friction between it and the floor is 0.82 what is the maximum force of friction between the bookcase and the floor a 372n b 305n c 412n d 449n

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