How can you tell the number of protons and nuetrons in nucleus

An airplane dropped a flare from a height of 2860 feet above a lake. How many seconds did it take for the flare to reach the water?

A strip of copper metal is riveted to a strip of aluminum. the two metals are then heated. the coefficient of linear expansion of aluminum is greater than that of copper. what happens?

What happens when you push a spring? How is this different than pulling it? (Hooke's Law)

A car slows down from 23 m/s to rest in a distance of 85m. what was its acceleration, assumed constant?

What is the luminosity of a star having 6 times the radius of the sun and a surface temperature of 15000 k?

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

If vector A = 5.5N NE and vector B = 10m N 30° W, what is the vector product of A*B