i need the answer quickly 21-Which of the following can be zero, when a particle is in motion for some time?(a) displacement (b) none of these (c) distance(d) speed22-The dimensional formula for speed is(a) T-¹(b) LT-¹(c) L-'T-¹(d) L''T23-A simple pendulum is kept oscillating in a lift. If the lift starts moving down with uniform velocitythen the periodic time of the simple pendulum_(a) will increase(b) will not change(c)will decrease(d) will be zero24- In SHM of a simple pendulum, the component of weight which is directed towards mean position is(a) mg cose(c) mg tane(b) mg sine(d) none of above25-The units used to measure derived quantities are known as(a) square units.(b) derived units(c) base units(d) scalar units26- In a simple pendulum, the force acting along the string is(a) 0(b) mg sine(c) mg cost(d) 127-If potential energies and kinetic energies are equal then displacement of an object in SHM is(a) 4(b) 0(c) 2(d)628-If the time period of a simple pendulum is 2 s then it's length is(a) 1.02m(b) 1.2m(c) 1.4m(d) 1.5m29-The restoring force pushes or pulls the oscillatory object(a) towards mean position (b) away from mean position (c) at central point (d) extreme point30- An object at rest may have(a) momentum(b) potential energy(c) velocity(d) kinetic energy

Solution 21- If a particle is in motion for some time then the distance covered by it can never be…

21-Which of the following can be zero, when a particle is in motion for some time? (a) displacement (b) none of these (c) distance (d) speed 22-The dimensional formula for speed is (a) T-¹ (b) LT-¹ (c) L-¹T-¹ (d) L'T 23-A simple pendulum is kept oscillating in a lift. If the lift starts moving down with uniform velocity then the periodic time of the simple pendulum_ (a) will increase (b) will not change (c)will decrease (d) will be zero

21-Which of the following can be zero, when a particle is in motion for some time? (a) displacement (b) none of these (c) distance (d) speed 22-The dimensional formula for speed is (a) T-¹ (b) LT-¹ (c) L-¹T-¹ (d) L'T 23-A simple pendulum is kept oscillating in a lift. If the lift starts moving down with uniform velocity then the periodic time of the simple pendulum_ (a) will increase (b) will not change (c)will decrease (d) will be zero

College Physics

1st Edition

ISBN:9781938168000

Author:Paul Peter Urone, Roger Hinrichs

Publisher:Paul Peter Urone, Roger Hinrichs

Chapter11: Fluid Statics

Section: Chapter Questions

Problem 50PE: Scurrilous con artists have been known to represent gold-plated tungsten ingots as pure gold and...

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