Homework Statement
A brass plug is to be placed in a ring made of iron. At room temperature (20°C), the diameter of the plug is 8.764 cm and that of the inside of the ring is 8.754 cm. They must both be brought to what common temperature in order to fit?
Homework Equations
Change in...
For the 2nd part P = D*G*H. density of water = 1000kg/m^3. After you get the pressure you simply add the atmospheric pressure. P = Pg + Pa. Make sure your units are correct, throws me off a lot.
still can't get it...seems like a easy question too.. i am setting Fb = 1200+m+g. I got force buoyant to be density of air (1.29 kg/m3) * Gravity * Volume. Which looks like 1.29*9.8*3583.477 = 1200+m+g. m is the mass of the cargo which i am solving for. i keep getting the mass of the cargo to be...
Homework Statement
A spherically shaped balloon has a radius of 11.5 m, and is filled with helium. How large a cargo can it lift, assuming that the skin and structure of the balloon have a mass of 1200 kg?
Neglect the bouyant force on the cargo volume itself.
Homework Equations
Fb =...
If the speed of a car is increased by 40%, by what factor will its minimum braking distance be increased, assuming all else is the same? Ignore the driver's reaction time.
Homework Equations
K=1/2 m v^2
w=fd
The Attempt at a Solution
well i set kenitic energy to work so i got...
i get where your going and tried to imagine it hanging down ur right that t2 would have less tension but i still don't completely understan might go to my teacher for this one.
Suppose the cord in Fig. 4-22 is a heavy rope of mass 1.0 kg. Calculate the acceleration of each box and the tension at each end of the cord, using the free-body diagrams shown in Fig. 4-46. Assume the cord doesn't sag. (m1 = 10.5 kg , m2 = 12.5 kg and FP = 35.0 N)
m1 stands for the mass of...