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The increase in the volume of 10cm3 of mercury when the temperature rises by 100oc is 0.182cm3. What is the cubic expansivity of mercury?
The air in cyclinder is compressed to of its initial volume, if initial pressure is 1×10^5 Pascal and initial temperature is 27°C. Find the final pressure and temperature often compression. Take gamma= 1.4
Solve Laplace's Equation nabla^2 V(z)=0.
Calculate the cube expansivity and increase the volume when solid matter cube is created from 10 degree to 50 degree
A particular brand of table salt is repacked by a retailer and sold in packs with net weights of 120g so long as the net weights of the packs do not deviate from 120g by more than 2g, the retailer is able to meet the market specifications and does not incur any loss. To check whether the packing process is still under control, he obtained a random sample of 10 packs. The mean net weight of the sample of the sample is 123g with a standard deviation of 5g. Should the retailer have any reason to fear that the process is out of controls? Use level of significance of 5%
- An aircraft attempt to fly due north at 100km per hour.if the wind blows against it from east to west at 60km per hour.it resultant velocity is?
Steam is used as a working fluid in a simple heat engine. It is heated from a hot reservoir with temperature, T=300 oC, performs net work, W=1000 J, and rejects heat into a cold reservoir with temperature, T=100 oC, to complete the cycle. This irreversible cycle is 25% as efficient as an ideal reversible cycle. Determine the waste heat (QL) transferred in this cycle. Draw and label the cycle, showing the temperature, heats and net work.
A hydraulic lift has pistons with diameters 8.00 cm and 36.0 cm, respectively. If a force of 825 N is exerted at the input piston, what maximum mass can be lifted by the output piston
Two forces act on an object. The first is a horizontal 50N force. The second is a 40 N force acting at an angle to the horizontal. Use a graphical method drawn to a scale of 1mm:1N to find the resultant if the 40N force is inclined at 30° to the horizontal
A calorimeter containing 600g of water and 100g of ice at0°C. A piece of heat metal of mass 1kg is added to the mixture in the calorimeter and this causes all the ice to melt. Calculate the initial temperature of the metal
