Hot water coil is used to heat air in a home heating unit. The air flow rate is 150 lbm/min and enters the coil at 70 F. Water enters the coil at 150 F and leaves at 100 F. If the air is heated to 120 F, what flow rate of water is required

Engineers find a new metal that is stronger than steel but much lighter. this material is also significantly cheaper than what is currently used for most aircraft, available in large quantities, and easy to manufacture. the engineers are excited because this new material will lower the costs of buying and operating airplanes for companies. what is probably the best step for the engineers to make next?

The energy released by a nuclear fusion reaction is produced when

Acid precipitation chemically weathering a 5.0-kg limestone rock . which coukd be the result ?