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The value of acceleration due to gravity is 980 cm s^-2. What will be its value if the unit of length is kilometer and that of time is minute? The value of acceleration due to gravity is 980 cm s^-2. What will be its value if the unit of length is kilometer and that of [...]

If the distance between the earth and the sun becomes half its present value, then the number of days in one year would have been If the distance between the earth and the sun becomes half its present value then the number of days in one year would have been September 14, 2020 Category: Cengage [...]

The resistance R = V/I, where V = (100 +- 5) V and I = (10 +- 0.2) A. Find the percentage error in R. The resistance R = V/i where V = (100 +- 5) V and I = (10 +- 0.2) A. Find the percentage error in R. September 14, 2020 Category: Uncategorised [...]

A capacitor of capacitance C = 2.0 +- 0.1 muon F is charged to a voltage V = 20 +- 0.2 v. What will be the charge Q on the capacitor? A capacitor of capacitance C = 2.0 +- 0.1 muon F is charged to a voltage V = 20 +- 0.2 v. What will [...]

The earth E moves in an elliptical orbit with the sun S at one of the foci as shown in figure. Its speed of motion will be maximum at the point The earth E moves in an elliptical orbit with the sun S at one of the foci as shown in figure. Its speed of [...]

The initial and final temperatures of liquid in a container are observed to be 76.3 +- 0.4 C and 67.7 +- 0.3 C. Determine the fall in the temperature of the liquid. The initial and final temperatures of liquid in a container are observed to be 76.3 +- 0.4 C and 67.7 +- 0.3 C. [...]

Figure shows the elliptical path of a planet about the sun. The two shaded parts have equal area. If t1​ and t2​ be the time taken by the planet to go from a to b and from c to d respectively. Figure shows the elliptical path of a planet about the sun. The two shaded [...]

A spherically symmetric gravitational system of particles has a mass density ρ={ρ0​, r≤R0, r>R​ where ρ0​ is a constant. A test mass can undergo circular motion under the influence of the gravitational field of particles. Its speed V as a function of distance r(0 A spherically symmetric gravitational system of particles has a mass density [...]

The magnitude of the gravitational field at distance r1​ and r2​ from the centre of a uniform sphere of radius R and mass M are F1​ and F2​ respectively. Then The magnitude of the gravitational field at distance r1​ and r2​ from the centre of a uniform sphere of radius R and mass M are [...]

A particle of mass M is situated at the centre of spherical shell of mass and radius a. The magnitude of the gravitational potential at a point situated at a/2 distance from the centre, will be A particle of mass M is situated at the centre of spherical shell of mass and radius a. The [...]