A stone is dropped from rest at the top of a mine shaft. it takes 15 s for a stone to fall to the bottom of a mine shaft. how deep is the shaft?

2. According to research, what is the most reliable form of identifying potentially effective reinforcers?

A child of mass 48.7 kg sits on the edge of a merry-go-round with radius 3 m and moment of inertia 376.938 kg m^2. The merry-go-round rotates with an angular velocity of 2.5 rad/s.

State and explain newton's second law of motion.

What is gravitational potential of a motionless 20kg rock that is 100m above the surface of the earth

Tony made 14 liters of lemonade for a party. His guests drank 9500 mL of the lemonade. After the party Tony had mL of lemonade left over.

If an atom has 34 protons and 40 neutrons, what is the mass number?

The atomic mass of an atom (in amu) is equal to Question 11 options: A. the total number of its protons, neutrons, and electrons B. the total number of electrons C. the total number of protons D. the total number of its protons and neutrons E.

12. Which of these describes the gravitational force from a planet?" O large and pulls objects toward itself small and pulls objects toward itself O small and pushes objects away from itself O large and pushes objects away from itself

In a laundromat, during the spin-dry cycle of a washer, the rotating tub goes from rest to its maximum angular speed of 4.7 rev/s in 8.3 s. You lift the lid of the washer and notice that the tub decelerates and comes to a stop in 17.5 s.

5. While a gas does 500J of work on its surroundings, 800J of heat is added to the gas. The mass of the gas is 300 grams, specific heat capacity is 1000 Joules/kg and the work is done keeping pressure constant.