Mechanics | Relativity Answers

Does our sun experince orbital perturbation? Explain?

TRAIN A IS MOVING WITH SPEED 1OOkm/hr & train b moving with speed 150 km/hr.train b whistles at 800Hz.In how much time a passenger sitting in train A will hear it?

A vector C = [ 10 m , 30 degree ] and vector D = [ 25 m , 130 degree ]
Use the algebraic ( components) method to find the magnitude and direction of the sum R = C + D ?

A projectile is fired from the ground with an initial velocity of 82 m/s at an angle of 55 above the horizontial .
1- What are the initial x and y componets of the velocity ?
2- What is the x component of the projectile 1.2 s after being fired , relative the firing point?
3- What is the y component of the projectile 1.2 s after being fired , relative the firing point ?

A vector R = B + C . If the vector C = 3i + 4 j and vector R has a magnitude equal to that of vector C and it is in positive y direction and what is the magnitude and direction of vector B ?

Show that for rutherford scattering, twice as many particles are scattered through an angle between 60 and 90 as are scattered through angles of 90 or more.

A container of mass 200kg is being loaded onto a cargo ship by using a pulley system with 2 vertical sections of cable. In this operation the container is lifted vertically off the ground to a height of h metres. For the first 3 seconds of the ascent the tension in each cable is 1200N. For the next seond it travels at a constant speed. For the final 6 seconds before it comes to rest the tension in each rope is T Newtons. Find the values of h and T.

A particle describes the curve rⁿ=aⁿ cos nθ under a force p towards the pole. Find the law of force? ...

A racing car has a uniform acceleration of 4 m/s[sup]2[/sup]. What distance will it cover in 10 s after start?

A train is travelling at a speed of 90 km/h brakes are applied so as to produce a uniform acceleration of -0.5 m s-2. Find how far the train will go before it is brought to rest .