Molecular Physics | Thermodynamics Answers

A 1-kg metal sample is heated to 90°C and then dropped into an insulated container containing 200 mL of water at 25°C. When thermal equilibrium is reached, the temperature of water rose to 40°C. What is the final temperature of the metal sample?

Finn and Jake saw a carousel-a horizontal rotating platform- with radiuse when they decided to ride with it. As they accelerate, the movement of the carousel is at constant speed unit it has reached an angular velocity after 2 complete revolutions. What is the angular acceleration of the carousel during this time?

The volume of a gas increases from 3Litres to 9Litres at a constant pressure of 4atm. Next,heat is added to increase the pressure to 10atm at constant finally heat is removed to decrease the pressure and volume back to the original values in a straight line path.

(a) Draw a PV-diagram

(b) Calculate the total workdone in this process.

Leave your answer in joules

What is the maximum wavelength of light that will cause photo electrons to be emitted

from sodium? What will the maximum kinetic energy of the photo electrons be if 200-nm

light falls on a sodium surface?

A gas is filled with oxygen at a temperature of 2atm. If the temperature is increased to 50°c and the pressure is increased to 5atm,by what factor does the density of the oxygen increases by

An ungranulated thermometer reads 2.0 and 12.9at ice andsteam point respectively.calculate the true temperature in kelvin when the thermometer reads 5.0

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.