Recent content by LostInScience

Homework Statement A 0.29 kg coffee mug is made from a material that has a specific heat capacity of 930 J/(kg·°C) and contains 0.23 kg of water. The cup and water are at 25°C. To make a cup of coffee, a small electric heater is immersed in the water and brings it to a boil in two minutes...

Homework Statement What is the density of nitrogen gas (molecular mass = 28 u) at a pressure of 1.7 atmospheres and a temperature of 332 K? Homework Equations You must convert pressure from atmospheres to Pascals. I'vedone this using the conversion 1 atmosphere = 1.01*10^5 pascals. I...

Homework Statement You have a "U-shaped" container with a valve at the bottom of a negligible volume tube. The left side is filled with water and the right side is filled with mercury. The valve is opened and since the two are immiscible there is a fluid level differentiation. Determine the...

Homework Statement Normal blood speed is 0.13 meters/second. If an artery has a narrowing down to one-seventh of the normal cross-sectional area, what is the difference in blood pressures between the normal and constricted segments? Answer is Pascals. Blood density is 1060 kg/meters^3...

52 kg box is pushed 7.0 meters by a force with a magnitude of 149 N. The coefficient of kinetic friction is 0.25. Determine normal force, force of gravity and frictional force. For the normal force I have 52 * 9.8 = 509.6 N Which is also the the force of gravity. However which is...