A student investigated the energy being transferred using the joulemeter (J).
The reading on the joulemeter was always 20 J lower than the
calculated value.
Name the type of error in the investigation

The current in a hair dryer measures 11 amps. the resistance of the hair dryer is 12 ohms. what is the voltage?unit:

An ideal otto cycle has a compression ratio of 10.5, takes in air at 90 kpa and 40°c, and is repeated 2500 times per minute. using constant specific heats at room temperature, determine the thermal efficiency of this cycle and the rate of heat input if the cycle is to produce 90 kw of power.

How does an observation about an object differ from an inference about that object