Molecular Physics | Thermodynamics Answers

1 mole of an ideal monoatomic gas, goes through a cycle in a heat engine. Process Z is isobaric, process X is isochoric and Y is adiabatic find:-

A. A heat absorb or release.

B. Change in internal energy

C. Work done for each of the three process and the whole cycle.

A 1 kg object is located at a distance of 6.4x106 m from the center of a larger object whose mass is 6.0x1024 kg.

a. What is the size of the force acting on the smaller object?

 b. What is the size of the force acting on the larger object?

A car accelerates from initial velocity of 10 m/s. The acceleration id increasing uniformly from zero to 8 m/s^2 in 6 secs. During the next two seconds, the car decelerates at a constant rate of 2 m/s^2. 1) Which of the following most nearly gives the velocity after 8 seconds. 2.) Which of the following most nearly gives the distance travelled after 6 seconds.

If the velocity of a particle which moves along the S-axis is given by V= 2 - 4t + 5t^3/2 , where t is in seconds and V is in meters per seconds. The particle is at the position So = 3 m, when t = 0 1.) Compute the position S when t= 3 sec 2.) Compute the velocity of the particle when t = 3 sec. 3) Compute the acceleration of the particle when t =3 sec. (note: This is a problem under Rectilinear motion with variable acceleration use our Formula V= dS/dt, a=dV/dt, adA= VdV)

If Michael Jordan has a vertical leap of 1.89 m, then what is his takeoff speed and his hang time (total time to move upwards to the peak and then return to the ground)? 

A kangaroo is capable of jumping to a height of 4.2 m. Determine the takeoff speed of the kangaroo. 

An inventor claims to have developed an engine working between 600 K and 300 K capable of having an efficiency of 52%. Comment on his claim.

1kg of a fluid is compressed reversibly according to a law PV=0.25 where p is in bar and v is in m^3/kg. The final volume is 1/4 of the initial volume , calculate the workdone on the fluid and sketch the process of p-v diagram

Steam enters a turbine stage with an enthalpy of 3500 kJ/kg at 80 m/s and leaves the same stage with an enthalpy of 2900 kJ/kg and a velocity of 110 m/s. calculate the work done by the system. *

The pressure of a boiler is 15 kg/cm^3. The barometric pressure of the atmosphere is 768mm of Hg. Find the absolute pressure in a boiler.