Which of the following changes would make a heat engine less efficient?

A. A decrease in its exhaust temperature

B. A decrease in entropy

C. An increase in work done

D. A decrease in its operating temperature

A ball is launched directly in the air at a speed of 40 feet per second from a platform located 10 feet in the air.

How is resonance used in musical instruments? A. to disrupt interference B. to amplify sound C. to create harmony D. to stay in tune

How does wind affect precipitation

A copper wire has a length of 1.50 m and a cross sectional area of 0.380 mm2. If the resistivity of copper is 1.70 ✕ 10-8 Ω · m and a potential difference of 0.700 V is maintained across its length, determine the current in the wire (in A).

What is electromagnetic wave made of

Who were the 26 or 27 scientists that found the elements on the periodic table?

What particle is used as a beam to treat cancer

Heat engine x has an efficiency of 67%. heat engine y has an efficiency of 82%. which best compares these two heat engines?

How far away is venus from the sun

Absolute differences between each observed mass and the accepted value, divided by the accepted value, multiplied by 100%