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What is the volume of aluminum ball at 10⁰C it it's volume at 160⁰C is 300cm³?
The newly constructed bridge in your town is a steel arch bridge 600m in length. How much does the total length of the roadway decking change between temperature extremes of 30⁰C and 50⁰C?
a steam plant uses 3.045 tonne of coal per hour .the steam generated is fed to a turbine whose output is 4.1MW .if the calorific value is 28 MJ/kg,determine the thermal efficiency of the plant
Find the heat transferred from the nitrogen to the surroundings. Use cv for nitrogen = 0.75 kJ/kg-K.
During the time when a man had flu, he ran a fever of 2.0oC above normal. His body temperature was 39.0oC instead of the normal 37.0oC. Assuming that the man has a mass of 80 kg and that the human body is mostly water, how much heat is required to raise his temperature? [Take specific heat capacity of liquid as, C = 4186 J / kg.oC]
How much energy is lost by 20 kg copper if it is cooled from 50°C to 30°C?
A 2.0 mol. sample of an ideal gas is kept at 1.0◦c during an expansion from 2.0 L to 9.0 how much energy transfer by heat occurs with the surroundings in this process?
What is the resultant temperature when 100g of steam at 100°C is passed through 500 g of ice at −20°C. The specific heat
of ice is 0.5 cal / g°C.
A block of mass M = 2kg is placed inside a rigid tube with length L= 2m connected to two springs of resisting lengths L1= 80cm and L2 =100cm, with spring constant k1= 200 N/M and k2= 300 N/M respectively connected at the ends A and B of the tube. Determine the elongations of the two springs when the tube AB is positioned Vertically.
Finally consider one configuration in which the tube rotates in a horizontal plane centered at B, and determine for which value of the rotation period the spring k1 is no longer elongated.
two forces are applied to a 0.45kg toy car, f1 = (2.5n, 1.5n) and a second force f2 = (-2.25n, -0.75n). if the car starts from rest, calculate the modulus of its velocity after 5 seconds.
#340153 on Dec 2023