Mechanics | Relativity Answers

calculate the wavelength of water waves which, on passing throug a gap 50cm wid, create a diffraction pattern such that the angle between the center of the pattern and the second-order minimum is 60°

A car travelling 19.4m/s passes apolice car at rest.As it passes, the police car starts up, accelerating with a magnitude of 3.2m/s. Maintaining that acceleration, how long will it take the police car to catch up with the speeding motorist?

find the moment of inertia of a uniform rod of length L about an axis prependicular to its end passing through a point at distance L/4 from an end

the distance travelled by a boy in the nth second is given by the expression (2+3n).find the initial velocity and the acceleration and also find final velocity in 2 second?

a cannon ball fire a shell with a peed of 84m/s.when the canon is incline at 45 degree ,the horizontal distance covered is is observed as 630 m.what is the percentage decrease in horizontal distance observed due to air resistance?

what is Quality factor?

A tub of a washer start from rest and reach an angular speed of 5 rev/s in 8s. Then, tub slows to rest in 12s. through how many revolutions does the tub turn during the entire 20 s interval? Angular acceleration is constant during starting and stopping.

whats the difference between inertial mass and gravitational mass? and whats the unit of both?

A particle is projected in vertically upward directions.find distances travelled by the particle in last second in upward motion?

a 3.0m beam with a mas of 130kg is supported at each end. a 70kg student stands 2.0m from support, how much upward force does each support exert on the beam?