Who created a model of the atom with electrons moving around the nucleus in fixed orbits?

If the resulting trajectory of the charged particle is a circle, what is ω, the angular frequency of the circular motion?

If you put a cup of hot chocolate at 90c on a table in a room kept at 25c you know it will cool down. How cool will the hot chocolate get?

What makes humans humans I mean like what do they do that makes us humans?

What is the specific heat capacity if it takes 1000 J of energy to heat 25 g of this substance by 100°C? Give your answer in J/kg°C.

The refractive index of light passing from air to water is 4/3 and air to glass is 3/2. Calculate the refractive index of glass relative to water

What experimental term is it when a ruler is dropped to the floor?

Where is most of the energy from incoming waves focused? A. spit B. headland C. underwater D. barrier beach

Exoplanets (planets outside our solar system) are an active area of modern research. Suppose you read an article stating that there is a newly discovered planetary system with three planets.

A car with a mass 1200 kg accelerates at 1.89 m/s2. What is the total force exerted by the car on the road (answer in N to two decimal places) ?

How Long will it take a plane flying north from Miami to reach New York City 1800 km away if the average velocity of the plane is 940 km/h