Properties Of Solids And Liquids Questions

35 Practice QuestionsStart Practicing Now

[Hard]If the absolute temperature of a perfectly black body radiating heat is doubled, by what factor does the total power radiated per unit area from its s...
[Easy]How much heat energy must be supplied to raise the temperature of 0.5 kg of water from 25°C to 75°C, given that the specific heat of water is 4200 J/k...
[Medium]In a hydraulic lift the small piston has an area of 0.01 m² and the large piston has an area of 0.5 m²; what force on the small piston is needed to su...
[Easy]A metal rod of length 1 m at 20°C has a coefficient of linear expansion of 2 \times 10^{-5} per °C; how much does it elongate when heated to 120°C?...
[Easy]When a substance is melting at its melting point while heat is continuously supplied, what happens to the temperature of the substance during the enti...
[Hard]Two metal rods of identical length and cross-section but different thermal conductivities are joined end to end; in the steady state, across which rod...
[Medium]A hot body cools from 80°C to 70°C in 5 minutes when placed in surroundings at 30°C; according to Newton's law of cooling, the cooling rate primarily ...
[Medium]A diver descends to a depth of 20 m below the surface of a lake where water density is 1000 kg/m³; what is the gauge pressure exerted by the water col...
[Medium]A wire is stretched so that it stores elastic potential energy; if the same wire is stretched to twice its original extension within the elastic limit...
[Medium]The Reynolds number is used to predict the nature of fluid flow in a pipe; a very high Reynolds number for the flowing liquid most strongly indicates ...
[Easy]During winter a lake freezes only at its surface while fish survive in the water below; this is best explained by which unusual thermal property of wa...
[Medium]A solid sphere of volume 0.5 m³ is taken deep into the ocean where the pressure increases by 2 \times 10^7 Pa, causing its volume to decrease by 100 c...
[Medium]Water flows smoothly through a horizontal pipe that narrows from a wide section to a constricted section; in the narrower part of the pipe the pressur...
[Medium]A spherical raindrop of radius 0.2 mm falls through air; if its radius were doubled to 0.4 mm under identical conditions, the terminal velocity of the...
[Easy]A small steel ball falling through a tall column of glycerine eventually moves at a constant speed; what name is given to this maximum constant veloci...
[Easy]Consider a soap bubble and a liquid drop of the same radius made from liquids of equal surface tension; how does the excess pressure inside the soap b...
[Easy]Water rises to a height of 8 cm in a clean glass capillary tube; if a second capillary tube of half the radius is used in the same water, the new rise...
[Hard]A liquid drop of radius 2 mm is split into 1000 identical tiny droplets without any change in temperature; by what factor does the total surface area ...
[Hard]When the elongation produced in a stretched rod is plotted against the applied stress, which physical quantity is represented by the slope of the stra...
[Medium]A steel wire of length 2 m and cross-sectional area 1 mm² is stretched by a load of 100 N, producing an extension of 1 mm; what is the Young's modulus...
[Easy]Beyond elastic limit a material?...
[Medium]Dimensions of surface tension are?...
[Medium]A wire length 2 m, area 2×10⁻⁶ m², Young's modulus 2×10¹¹ Pa stretches 1 mm under load. Force applied?...
[Easy]Stress is defined as?...
[Medium]Work required to increase surface area of a soap film by 0.02 m² (surface tension 0.03 N/m, film has two surfaces)?...
[Hard]Rise of water (γ=0.072 N/m, θ≈0°, ρ=1000 kg/m³, g=10) in tube radius 0.5 mm?...
[Hard]Sphere radius 1 mm falls steadily in oil (η=0.6 Pa·s), density difference Δρ=900 kg/m³, g=10. Terminal velocity?...
[Easy]Bulk modulus defined as?...
[Easy]Pressure increase with depth h in incompressible fluid?...
[Medium]Hydraulic lift advantage arises because?...
[Medium]Bernoulli's equation neglects which effect?...
[Medium]Elastic energy density for linear stress-strain (stress σ, strain ε) equals?...
[Hard]Volumetric flow rate through capillary depends most strongly on radius as?...
[Hard]Isothermal compressibility κ is defined as?...
[Easy]Viscosity of liquids generally?...