Please help ASAP WILL MARK THE BRAINLEST

What is the acceleration of a bicycle if the bicycle plus the rider have a mass of 50 Kg and the net force on the bicycle is 250 N?

A) 7 m/s2

B) 3 m/s2

C) 5 m/s2

How many atoms of mg are present in 97.22 grams of mg? 6.022 × 1023 2.408 × 1024 4.818 × 1024 5.855 × 1025

Which process does not require the presence of a physical substance in order to transfer heat? air in the atmosphere is heated by the ground. this warm air then rises, and cooler air falls. this is an example of what type of process? how is conduction different from radiation?

Surface currents are caused by blank space . question 14 options: surface currents are caused by? differences in water temperature high salinity differences in density wind forces