Molecular Physics | Thermodynamics Answers

Assuming energy wasn’t destroyed or created in this activity, why do you think the efficiency
isn’t 100%?

Can palm oil be used as a thermometer substance? If yes explain why and if no explain why

your walk to your morning physics lecture takes 10 minutes and as you walk you do mechanical work at a rate of 33W with an efficiency of 6%. How much energy stored in your body ahve you used up over the course of your walk?

your walk to your morning physics lecture takes 10 minutes and as you walk you do mechanical work at a rate of 33W with an efficiency of 6%. How much energy stored in your body ahve you used up over the course of your walk?

On a cold winter morning when the temperature is -13 Celsius the air pressure in an aoutomobile tire is 1.5 atm.if the volume does not change what is the pressure after the tire has warmed to 15 Celsius

Jose has a cup of hot coffee, at 45°C. He adds some warm milk, and the resulting mixture is now 40°C. Does the mixture have more, less or the same amount of heat? Why?

AN EFFORT FORCE OF 200.0 N IS APPLIED TO AN IDEAL MACHINE TO MOVE A 750.0-N RESISTANCE A DISTANCE OF 300.0 CM
A. THROUGH WHAT DISTANCE MUST THE EFFORT FORCE ACT
B.WHAT IS THE IMA OF THE MACHINE)

The fundamental frequency on a aluminum string that is fixed at both ends is 468 Hz. The string is then cooled 174°C and as such its length changes. Determine how much the fundamental frequency will change as a result assuming the tension remains constant.
Δf1 =

A temperature difference of 5 K is equal to

What mass of ice at -14 Celsius will be needed to cool 200cm cube of an orange drink from 25 Celsius to 10 Celsius.( Specific fusion of ice= 3.36×10^5.specific heat capacity of ice= 2100. Specific heat capacity of water= 4200Jkg^-1