who described atoms as having a positive nucleus with electrons that have different energies at different distances from the nucleus.

A ball rolls at 3 meters per second. how much time does it take for the ball to roll 6 meters

Three resistances 2 ohm, 3ohm and 5 ohm are connected in parallel and a potential difference of 20V is applied across the terminals of combination. The potential difference across 3 ohm resistance is:

What is the momentum of a 12,000 kg car moving at a speed of 40 m/s?

When the only force acting on a falling object is gravity, the object is said to be

How many neutrons does element x have if it's atomic number is 27 and it's mass number is 74

A device that changes thermal energy into mechanical energy

You and your roommate are moving to a city 380 mimi away. Your roommate drives a rental truck at a constant 55 mi/hmi/h, and you drive your car at 65 mi/hmi/h. The two of you begin the trip at the same instant.

Which planet is 92,897,000 miles from the sun?

Stretching or drawing a solid into a wire is which of the following physical properties A) ductility B) solubility C) malleability D) conductivity

How well does the infographic ""Plastics in the Ocean"" present a solution to the problem it describes?