The examples of newton and Einstein work to explain how scientific knowledge is both reliable and yet open

What is the acceleration of a spaceship that is initially at rest and then speeds up to 220 m/s in 20 seconds

What do you think car designers do if the damage caused by a crash test is too severe?

The magnetic field inside a superconducting solenoid is 4.50 t. the solenoid has an inner diameter of 6.20 cm and a length of 26.0 cm. determine (a) the magnetic energy density in the field and (b) the energy stored in the magnetic field within the solenoid.