Question Answers
Sahay Sir > Question Answers
When two vectors of magnitude P and Q are inclined at an angle theta, the magnitude of their resultant is 2 P . When the inclination is changed to 180 – theta, the magnitude of the resultant is halved.
17
Sep
When two vectors of magnitude P and Q are inclined at an angle theta, the magnitude of their resultant is 2 P . When the inclination is changed to 180 – theta, the magnitude of the resultant is halved. the magnitude of the resultant is halved. the magnitude of their resultant is 2 P . [...]
In Melde’s experiment, a string of length 0.8 m and mass 1.0 g vibrates in 4 segments when the tension in the string is 0.4 kg wt. The frequency of the fork is
17
Sep
In Melde’s experiment, a string of length 0.8 m and mass 1.0 g vibrates in 4 segments when the tension in the string is 0.4 kg wt. The frequency of the fork is a string of length 0.8 m and mass 1.0 g vibrates in 4 segments when the tension in the string is 0.4 [...]
A force F = 3i + 2j + ck N causes a displacement r = ci + 4j + ck m. The work done is 36 J. Find the values of c.
17
Sep
A force F = 3i + 2j + ck N causes a displacement r = ci + 4j + ck m. The work done is 36 J. Find the values of c. A force F = 3i + 2j + ck N causes a displacement r = ci + 4j + ck m. The work [...]
A spherical conductor of radius 2 m is charged to a potential of 120 V. It is now placed inside another hallow spherical conductor of radius 6 m. Calculate the potential to which the bigger sphere would be raised
17
Sep
A spherical conductor of radius 2 m is charged to a potential of 120 V. It is now placed inside another hallow spherical conductor of radius 6 m. Calculate the potential to which the bigger sphere would be raised Charges of +10/3 x 10^-9 C are placed at each of the four corners of a [...]
a. Calculate r = a – b + c, where a = 5i + 4j – 6k, b = -2i + 2j + 3k, and c = 4i + 3j + 2k. b. Calculate the angle between r and the z axis.
17
Sep
a. Calculate r = a – b + c, where a = 5i + 4j – 6k, b = -2i + 2j + 3k, and c = 4i + 3j + 2k. b. Calculate the angle between r and the z axis. a. Calculate r = a - b + c and c = 4i [...]
Two electric charges 12 muC and -6 muC are placed 20 cm apart in air. There will be a point P on the line joining these charges and outside the region between them, at which the electric potential is zero. The distance of P from -6 muC charge is
17
Sep
Two electric charges 12 muC and -6 muC are placed 20 cm apart in air. There will be a point P on the line joining these charges and outside the region between them, at which the electric potential is zero. The distance of P from -6 muC charge is at which the electric potential is [...]
A second harmonic has to be generated in a string of length L stretched between two rigid supports. the point where the string has to be plucked and touched are
17
Sep
A second harmonic has to be generated in a string of length L stretched between two rigid supports. the point where the string has to be plucked and touched are A second harmonic has to be generated in a string of length L stretched between two rigid supports. the point where the string has to [...]
A spy plane is being tracked by a radar. At t = 0, its position is reported as (100 m, 200 m, 1000 m). 130 s later its position is reported to be (2500 m, 1200 m, 1000 m). Find a unit vector
17
Sep
A spy plane is being tracked by a radar. At t = 0, its position is reported as (100 m, 200 m, 1000 m). 130 s later its position is reported to be (2500 m, 1200 m, 1000 m). Find a unit vector 1000 m). 130 s later its position is reported to be (2500 [...]
A guitar string is 90 cm long and has a fundamental frequency of 124 Hz. Where should it be pressed, to produce a fundamental frequency of 186 Hz ?
17
Sep
A guitar string is 90 cm long and has a fundamental frequency of 124 Hz. Where should it be pressed, to produce a fundamental frequency of 186 Hz ? A guitar string is 90 cm long and has a fundamental frequency of 124 Hz. Where should it be pressed to produce a fundamental frequency of [...]
A particle of m = 5 kg is momentarily at rest at x = 0 at t = 0. It is acted upon by two forces F1 and F2. F1 = 70 jN. The direction and magnitude of F2 are unknown. The particle
17
Sep
A particle of m = 5 kg is momentarily at rest at x = 0 at t = 0. It is acted upon by two forces F1 and F2. F1 = 70 jN. The direction and magnitude of F2 are unknown. The particle A particle of m = 5 kg is momentarily at rest at [...]