Molecular Physics | Thermodynamics Answers

Way to minimize the evaporation in a Beaker of hot water

plastic spherical balloon is held below the surface of a swimming pool by a cable tied to

the bottom of the pool. The sphere has a volume of 1.50 x 10-2m3 and the tension in the

cable is 90.0N. What is the buoyant force exerted by the water on the sphere? 147N

. A plastic spherical balloon is held below the surface of a swimming pool by a cable tied to the bottom of the pool. The sphere has a volume of 1.50 x 10 -2 m 3 and the tension in the cable is 90.0N. What is the buoyant force exerted by the water on the sphere? 147N 

Consider a fever thermometer that contains 0.01 cm³ of mercury, Find the diameter of the capillary if a 1 C° change corresponds to a level change of 0.5 cm . Assume the glass does noe expand.

an effort force of 200n is applied to an ideal machine to move a 750n resistance a distance of 30cm. what is the mechanical advantage of the machine?

A projectile is fired with an initial velocity of 60 m/sec. Upward at an angle of 30° to the horizontal from a point 80m above a level plain. What horizontal distance will it cover before it strikes the plain?

A basketball of mass 0.0400 kg is dropped from a height of 5.00 m to the ground and bounces back to a height of 3.00 m.

a. On its way down, how much potential energy does the ball lose?

b. On its way back, how much potential energy does the ball regain?

Determine the mass of air in slugs contained in a room whose dimensions are 15 ft x 20ft x 20ft. Assume the density of air is 0.0724 lb/ft3 . 

A planet has a radius of 3500 km and a surface gravity of 3.8 m/s2. what is the mass of the planet

The mean radius of the earth is 6360 km. (a) What is the are of the earth’s surface in square meters?

Square centimeters? Square feet?