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The antiseptics used for cuts and wounds in human flesh have low surface tension.

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What is the cause of viscosity in a fluid? How does the flow of fluid depend on

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What is the significance of Reynolds’s

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Why does heat flow from a body at higher temperature to a body at lower

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If the temperature of the sun is doubled, the rate of energy received on each will increases by what

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Derive an expression for the work done during isothermal

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The density of water is 1000 kg `m^(–3)`. The density of water vapour at 100 °C and 1 atm pressure is 0.6 kg `m^(–3)`. The volume of a molecule multiplied by the total number gives ,what is called, molecular volume. Estimate the volume of a water

asked Mar 19, 2022 in 11th Physics by varun (6.7k points)

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The density of water is 1000 kg `m^(–3)`. The density of water vapour at 100 °C and 1 atm pressure is 0.6 kg `m^(–3)`. The volume of a molecule multiplied by the total number gives ,what is called, molecular volume. What is the average distance between atoms (interatomic distance)

asked Mar 19, 2022 in 11th Physics by varun (6.7k points)

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You are riding in an automobile of mass 3000 kg. Assuming that you are examining the oscillation characteristics of its suspension system. The suspension sags 15 cm when the entire automobile is placed on it. Also, the amplitude of oscillation decreases by 50% during one complete oscillation. Estimate the values of (a) the spring constant k and (b) the damping constant b for the spring and shock absorber system of one wheel, assuming that each wheel supports 750

asked Mar 19, 2022 in 11th Physics by varun (6.7k points)

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A steel rod 100 cm long is clamped at its middle. The fundamental frequency of longitudinal vibrations of the rod are given to be 2.53 kHz. What is the speed of sound in

asked Mar 19, 2022 in 11th Physics by varun (6.7k points)

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Explain why Water on a clean glass surface tends to spread out while mercury on the same surface tends to form drops. (Put differently, water wets glass while mercury does

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Explain why A fluid flowing out of a small hole in a vessel results in a backward thrust on the

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A 50 kg girl wearing high heel shoes balances on a single heel. The heel is circular with a diameter 1.0 cm. What is the pressure exerted by the heel on the horizontal floor

asked Mar 19, 2022 in 11th Physics by varun (6.7k points)

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Figures (a) and (b) refer to the steady flow of a (non-viscous) liquid. Which of the two figures is incorrect ? Why ?

asked Mar 19, 2022 in 11th Physics by varun (6.7k points)

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The average depth of Indian Ocean is about 3000 m. Calculate the fractional compression, ∆V/V, of water at the bottom of the ocean, given that the bulk modulus of water is `2.2 × 10^9` N `m^(–2)`. (Take g = 10 m

asked Mar 19, 2022 in 11th Physics by varun (6.7k points)

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Four identical hollow cylindrical columns of mild steel support a big structure of mass 50,000 kg. The inner and outer radii of each column are 30 and 60 cm respectively. Assuming the load distribution to be uniform, calculate the compressional strain of each

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What is the density of water at a depth where pressure is 80.0 atm, given that its density at the surface is `1.03 × 10^3` kg

asked Mar 19, 2022 in 11th Physics by varun (6.7k points)

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Anvils made of single crystals of diamond, with the shape as shown in Fig., are used to investigate behaviour of materials under very high pressures. Flat faces at the narrow end of the anvil have a diameter of 0.50 mm, and the wide ends are subjected to a compressional force of 50,000 N. What is the pressure at the tip of the anvil?

asked Mar 19, 2022 in 11th Physics by varun (6.7k points)

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Two strips of metal are riveted together at their ends by four rivets, each of diameter 6.0 mm. What is the maximum tension that can be exerted by the riveted strip if the shearing stress on the rivet is not to exceed `6.9 × 10^7` Pa? Assume that each rivet is to carry one quarter of the

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Answer the following : You can shield a charge from electrical forces by putting it inside a hollow conductor. Can you shield a body from the gravitational influence of nearby matter by putting it inside a hollow sphere or by some other means

asked Mar 19, 2022 in 11th Physics by varun (6.7k points)

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