My friends called me Iron59 because my parents are a chemist and a mathematician. What is my real name?

Which is heavier: a ton of bricks or a ton of feathers?

Can you find the mistake in the below statement?

What has hands, but can’t clap?

Can you tell a 3D object that has just two surfaces?

What is the last thing you take off before bed?

Can you spot the hidden girl in the picture below?

Can you find the thief by just looking at the picture below?

The Federal bank of London is abducted by the robbers. The head of the robbers asked the cashier to empty their money vault to them and when suddenly cashier got a call from her father. To avoid any suspicion, the robber asked the cashier to pick the call and reply her father in the shortest manner possible.

The cashier told her father "Is there an emergency father, Call me when you are free and I will help you in your furnishing" and then the cashier hung up the phone.

After 10 minutes, police arrived at the crime scene.

How did the police know about the robbery?

I was speeding and ran through a stop sign, yet two traffic officers who were there do nothing about it.

why?