Questions and answers by

swapnali

Questions (11)

explain how low temperatures are produced using adiabatic demagnetisation
1. 1 answer
2. 477 views
An object was launched with a velocity of 20 ms−1 at an angle of 45° to the vertical. At thetop of its trajectory the object
1. 1 answer
2. 492 views
Calculate the Coriolis acceleration of an aeroplane flying along the equator due east ata speed of 300m s−1.
1. 0 answers
2. 435 views
An object was launched with a velocity of 20 ms−1 at an angle of 45° to the vertical. At thetop of its trajectory the object
1. 1 answer
2. 445 views
The oscillations of two points x1 and x2 at x = 0 and x = 1 m respectively are modelled asfollows: y1 = 0.2 sin 3pt and y2 = 0.2
1. 1 answer
2. 600 views
The equation of transverse wave on a rope isy (x, t) = 5 sin (4.0t −0.02x) where y and x are measured in cm and t is expressed
1. 0 answers
2. 625 views
An ice skater spins about a vertical axis at an angular speed of 15 rad s−1 when her arms areoutstretched. She then quickly
1. 1 answer
2. 634 views
An object was launched with a velocity of 20 ms−1 at an angle of 45° to the vertical. At thetop of its trajectory the object
1. 0 answers
2. 456 views
At perihelion on Feb. 9, 1986, Halley’s comet was 8.79 × 107 km from the sun and wasmoving at a speed of 54.6 km s−1
1. 0 answers
2. 660 views
A spring is stretched 5 × 10−2 m by a force of 5 × 10−4 N. A mass of 0.01 kg is placed on thelower end of the spring.
1. 1 answer
2. 596 views
For a damped harmonic oscillation, the equation of motion is0, 2 2 + g + kx = dt dx dt d x m with m = 0.25 kg, g = 0.07 kgs−1
1. 1 answer
2. 588 views