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The CN Tower, in Toronto, Canada, is 553 m tall. Suppose two balls, each with a mass of
5.00 kg and a charge of 40.0 mC, are placed at the top and bottom of the tower, respectively.
The ball at the top is then dropped. At what height is the acceleration on the ball zero?
5.00 kg and a charge of 40.0 mC, are placed at the top and bottom of the tower, respectively.
The ball at the top is then dropped. At what height is the acceleration on the ball zero?
A body of mass ‘m’ is placed on a rough inclined plane having coefficient of friction
µs. The inclination of plane is given as ‘θ’.
a) Which component of weight brings the body towards the bottom along the plane.
b) Find how much force is required to pull the body along the plane.
µs. The inclination of plane is given as ‘θ’.
a) Which component of weight brings the body towards the bottom along the plane.
b) Find how much force is required to pull the body along the plane.
A stone is thrown upwards from the ground with a velocity ‘u’
a) Obtain the maximum height attained by the stone?
b) Check the correctness of the equation obtained in (a) using the
method of dimensional analysis.
a) Obtain the maximum height attained by the stone?
b) Check the correctness of the equation obtained in (a) using the
method of dimensional analysis.
38. An electron of mass ‘m’ moves with a uniform speed v around the nucleus along a
circular path of radius R.
a) Derive an expression for the acceleration of the electron.
b) Is this acceleration a constant vector? Why?
c) Explain why the speed of electron does not increase even though it is accelerated by
the above acceleration.
circular path of radius R.
a) Derive an expression for the acceleration of the electron.
b) Is this acceleration a constant vector? Why?
c) Explain why the speed of electron does not increase even though it is accelerated by
the above acceleration.
A circular track of radius 300m is kept with outside of track raised to make 5 degree
with the horizontal.
1. Name the process in which outside of the road is raised little above the inner.and
explain why?
2. Obtain an expression for the optimum speed to avoid skidding (considering to
friction)
with the horizontal.
1. Name the process in which outside of the road is raised little above the inner.and
explain why?
2. Obtain an expression for the optimum speed to avoid skidding (considering to
friction)
In an experiment with a common balance the mass of a ring found to be 2.52g, 2.5g, 2,51g, 2.49g and 2.54g in successive measurements. Calculate a) The mean value of the mass of the ring b) The absolute error in each measurement c) Mean absolute error d) Relative error e) Percentage error
A ball is thrown vertically upwards with a velocity of 20 m/s from the top of the building of height 25m from the ground (i).How high will the ball reach? (ii)How long will it take to reach the A ground?
What do you mean by recoil of gun? Obtain an expression for recoil velocity? A shell of mass 30g is fired from a gun, with a speed of 80m/s. Calculate the recoil velocity of gun if its mass is 200g.
What is diffraction. .
What is reflection.
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#331389 on Nov 2022
#331389 on Nov 2022