Determine the change in internal energy of 8.00 kg of water when it is all boiled to steam at 100 ∘c. assume a constant pressure of 1.00 atm.
At what temperature would a 1.45 m nacl solution freeze, given that the van’t hoff factor for nacl is 1.9? kf for water is 1.86 ∘c/m . express your answer with the appropriate units.
A submersible craft is being designed to operate in the atlantic ocean. the density ρ of salt water is 1.025 grams per cubic centimeter. for a maximum design depth of 300 feet, what is the minimum pressure for the hull that the craft must be designed to withstand? a.the solution to this problem begins with […]
A sky diver with a mass of 70 kg jumps from an aircraft. the aerodynamic drag force acting on the sky diver is known to be fd = kv @, where k = 0:25n s2=m2. determine the maximum speed of free fall for the sky diver and the speed reached after 100m of fall. plot […]
In a physics lab experiment, a spring clamped to the table shoots a 18 {rm ;g} ball horizontally. when the spring is compressed 21 {rm ;cm} , the ball travels horizontally 4.9 {rm ;m} and lands on the floor 1.6 {rm ;m} below the point at which it left the spring.
If the joint is subjected to an axial force of p = 8.1 kn , determine the average shear stress developed in each of the 6-mm diameter bolts between the plates and the members.
How many milliliters of water at 23 °c with a density of 1.00 g/ml must be mixed with 180 ml (about 6 oz) of coffee at 95 °c so that the resulting combination will have a temperature of 60 °c? assume that coffee and water have the same density and the same specific heat?
Four identical metal spheres have charges of qa = -8.0 μc, qb=-2.0 μc, qc=+5.0 μc, and qd=+12.0 μc. (a) two of the spheres are brought together so they touch, and then they are separated. which spheres are they, if the final charge on each one is +5.0 μc?
Problem #3 : a spherical pressure tank is made of 1050 cold-drawn steel (sy = 84 ksi, su = 100 ksi). the tank has a 40″ inner diameter, has a ½” wall thickness, and is pressurized cyclically between 200 psi and 1000 psi. using the goodman fatigue criterion for infinite life, find the overall safety […]
The gulf stream off the tip of florida has a flow of 35 sv (1 sv = 109 m3/s). what is the flow in milliliters per minute? what mass of water flows past the tip in 24 hours? how much time is required for 1 petaliter (1 pl = 105 l) to flow past the […]
