Match the object (on the left) with its characteristic (on the right). Question 23 options: cloud droplets ice crystals supercooled water droplets condensation nuclei 1. causes hail to get bigger 2. necessary for the formation of cloud droplets 3. found in the warm cloud 4. win the battle inside the cold cloud

The two most prominent wavelengths in the light emitted by a hydrogen discharge lamp are 656 nm(red) and 486 nm (blue). light from a hydrogen lamp illuminates a diffraction grating with 520lines/mm , and the light is observed on a screen 1.5m behind the grating. part a what is the distance between the first-order red and blue fringes? express your answer to two significant figures and include the appropriate units.

Alfred pushes on a heavy box, but cannot move it. the box has a lot of inertia motion friction gravity

(01.02 mc) nicole pushes her bike up a hill. overhead, the sun exerts a gravitational force on earth. which statement is true about the bike and earth? they both experience contact forces. they both experience non-contact forces. the bike experiences a non-contact force and earth experiences a contact force. the bike experiences a contact force and earth experiences a non-contact force. they both experience non-contact forces.