Which of the following are examples of macro

When do spring tides occur?

Sound travels fastest in which medium?  

A sound wave of frequency 500 Hz travels at 340 m/s. Find its wavelength.

A 5 kg block at rest is hit by a 0.1 kg bullet moving at 500 m/s. The bullet gets embedded into the block. What is their final velocity?

What is the phenomenon of the bending of light as it passes from one medium to another called?  

In Young’s double-slit experiment, if the distance between slits is increased, fringe width:

A current element is placed at origin. At point P(1 mm,1 mm), the magnetic field due to this element is:

Which of the following is the ultimate source of energy?

Which law explains the relation between pressure and volume of a gas at constant temperature?