if an object was dropped from an airplane and took 14.2s to fall to the earth, what was the height of the plane

a box sliding on a frictionless surface when it suddenly begins to rain heavily. if the downpour of rainfall falls vertically into the box, gradually filling it, what would happen to the speed of the box

Do any of the galaxies appear to be closer to each other as your universe expands? What does this say about the possibility of galaxies colliding with each other?

Why do we have 365 days in a year?

The idea that mental states are dispositions to behave in particular ways in certain Circumstances is known as

Does it require more energy to brew 12 cups with the coffee-maker or reheat 12 cups of coffee in a microwave?

Which answer choice best explains why nuclear reactions release more energy than chemical reactions? Electrostatic forces of repulsion are thousands of times stronger than gravitational forces.

A train's mass is 18181.81 kg. What is its weight?

a 3.0m long frictionless pendulum swings with a maximum angluar displacement of 10 degree from the vertical. at its lowest position the kinetic energy of the pendulum is 20.0j what is the potential energy of the pendulum when the kientic energy is 5.

How are hypotheses and theories related to each other?

a bike can climb the inclined road at uniform speed of 72 km/hr by applying force 500N what will be the power applied by the bike?