Someone kindly help me with question I found a GCE past paper 1. Describe how you would show that a radioactive source is only emitting beta radiation.

What electron configurations do atoms usually achieve by sharing electrons to form covalent bonds?

A10 kg shark swimming at 5m/s swallows an absent-minded 0.5 kg fish that is originally at rest. what is the speed of the large fish after eating the smaller fish?

You are an astronaut working on the international space station. accidentally, you let go of the handhold and drift off towards earth. the illustration, below, includes the details of your position (not drawn to scale). i’m a little stuck on the gravitational force felt by the astronaut from the iss. a little ?