How long will it take for 64 g of a radioactive material to be reduced to 2.0 g if the half-life is 0.5 hours?

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Boltzmann's constant is 1.38066*10^-23 J/K, and the universal gas constant is 8.31451 J/K · mol. If 2.9 mol of a gas is confined to a 6.6 L vessel at a pressure of 7.1 atm, what is the average kinetic energy of a gas molecule? Answer in units of J.

ou are pushing a 20-kg box along a horizontal floor. Friction acts on the box. When you apply a horizontal force of magnitude 48 N, the box moves at a constant velocity. What is the magnitude of the frictional force on the box?

What is the dimension of n if force is given by the equation F=6pie rvn

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a man applies a force of 100n to a rock for 60 seconds but the rock does not move what is the amount of work done by the man on the rock

The driver of a car traveling at 32 m/s applies the brakes and undergoes a constant deceleration of 2.25 m/s^2.

You are going to develop some photographic film that involves a chemical reaction between the developer, which you will mix yourself, and a chemical on the surface of the film.

Would time travel mean that parallel universes would be created off our linear time sequence to ensure the universe doesn't collapse itself because of significant events being drastically changed in the way it shapes the universe?

What is the central core of hair