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An electric heater supplies heat to a system at a rate of 100W. If system performs work at a rate of 75 joules per second. At what rate is the internal energy

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Answer of the following. When a molecule (or an elastic ball) hits a ( massive) wall, it rebounds with the same speed. When a ball hits a massive bat held firmly, the same thing happens. However, when the bat is moving towards the ball, the ball rebounds with a

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What is the length of a simple pendulum, which ticks seconds

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A U-shaped wire is dipped in a soap solution, and removed. The thin soap film formed between the wire and the light slider supports a weight of `1.5 × 10^(–2)` N (which includes the small weight of the slider). The length of the slider is 30 cm. What is the surface tension of the film

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A square lead slab of side 50cm and thickness 10 cm is subject to a shearing force (on its narrow face) of `9.0 ×10^4` N. The lower edge is riveted to the floor. How much will the upper edge be

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

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Compute the fractional change in volume of a glass slab, when subjected to a hydraulic pressure of 10

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Io, one of the satellites of Jupiter, has an orbital period of 1.769 days and the radius of the orbit is `4.22 × 10^8` m. Show that the mass of Jupiter is about one-thousandth that of the

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Does the escape speed of a body from the earth depend on (a) the mass of the body, (b) the location from where it is projected, (c) the direction of projection, (d) the height of the location from where the body is

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Find the torque of a force `7hati+3hatj-4hatk` about the origin. The force acts on a particle whose position vector is

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

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Separation of Motion of a system of particles into motion of the centre of mass and motion about the centre of mass : Show K=K'+1/2M`V^2` where K is the total kinetic energy of the system of particles, K′ is the total kinetic energy of the system when the particle

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What is the ratio of maxmimum acceleration to the maximum velocity of a simple harmonic

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The velocity υ of water waves may depend on their wavelength λ density of water ρ and the acceleration due to gravity g. Find relation between these quantities by the method of

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The length and breadth of a rectangular sheet are 16.2 cm and 10.1cm, respectively. The area of the sheet in appropriate significant figures and error

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

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Give an example of a constant which has a

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The displacement of a progressive wave is represented by `y = A sin(wt – k x )`, where x is distance and t is time. Write the dimensional formula of

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

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The displacement of a progressive wave is represented by `y = A sin(wt – k x )`, where x is distance and t is time. Write the dimensional formula of

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How many astronomical units (A.U.) make 1 parsec? Show

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Maxwell’s set of equation encapsulated basic laws such

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Radio and television are based

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

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