A heat engine has an efficiency of 35.0% and receives 150 J of heat per cycle. How much work does it waste in each cycle?
What will be an ideal response?
Ans: 97.5 J
You might also like to view...
A cable is 100-m long and has a cross-sectional area of 1.0 mm2. A 1000-N force is applied to stretch the cable. Young's modulus for the cable is 1.0 × 1011 N/m2. How far does the cable stretch?
A) 0.10 m B) 1.0 m C) 10 m D) 0.010 m
Continental crust is
A) thinner than oceanic crust. B) less dense than oceanic crust. C) more dense than oceanic crust. D) thinner and more dense than oceanic crust.
Answer the following statement(s) true (T) or false (F)
1. A person who exerts a 100-N force horizontally in the +x direction on a wall for 10 minutes does positive work on the wall. 2. When an object slides down a frictionless incline, the contact interaction between the object and incline does no work on the object. 3. The interaction does not change the object’s kinetic energy. 4. The interaction does not change the object’s momentum. 5. A heavy ball swings at the end of a chain connected to a hook in the ceiling. Suppose I pull the ball away from its equilibrium position, hold it against my nose (with the chain taut), and then release the ball from rest. The ball swings away and then back toward my face. As long as I don’t move, and the ball is left alone, I can be confident that the ball will not smash my nose.
At equilibrium on a bathroom weighting scale, the downward pull of gravity on you is balanced by
A) your weight. B) an upward support force. C) your mass.