A crate is dragged across an ice covered lake. The box accelerates at 0.08m/s2 and is pulled by a 47N force. What is the mass of the box?

An air-standard stirling cycle operates with a maximum pressure of 600 psia and a minimum pressure of 10 psia. the maximum volume of the air is 10 times the minimum volume. the temperature during the heat rejection process is 100°f. calculate the specific heat added to and rejected by this cycle, as well as the net specific work produced by the cycle. use constant specific heats at room temperature. the properties of air at room temperature are r

The first law of thermodynamics states that heat added to a system is neither created nor destroyed but is transformed ⇒ as it changes into other forms of energy.

Jessie ran 5000 meters from the cops and an average speed of 6 meters / second before he got caught . how long did he run?