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A plane starts from rest and reaches a speed of 600m/s by the end of the runway in 10 seconds. What is the acceleration of the plan? What is the distance of the runway?
Find the equivalent capacitance.
C1=6.0 µF, C=4.0 µF
An object is attached to a lift. The mass of the object is 3 kg.
Two spring balances S1 and S2 are attached to the upper and lower string
to measure their tensions.
The strings are light and inextensible. The lift is initially at rest.
Assume g=10m per sec sq.
(a) If the reading in S1 is 40N, Find the reading in S2.
(b) The lift starts to move and accelerate upwards with a magnitude of 5m per sec sq.
What is the readings of S1 and S2?
(c) When the lift approaches the end of its journey, it decelerates at a magnitude
of 5m per sec sq, what is the readings of S1 and S2 ?
A 5.0 kg of object is dropped from height of 2.5 m above the floor. What is the object's momentum after 2.5s.
The electric field in free space is given by E= 50cos (102t+beta x) ay
1,find the direction of wave propogation
Earth has a mass of 5.97×1024 kg and a radius of 6,370 km. What is its moment of
inertia if it is assumed to be a solid sphere of uniform density?
Show that the existence of energy gaps at the boundaries of the Brillouin zone of a
one dimensional lattice is equivalent to the condition of Bragg reflection of electron waves.
Prove that the total no of possible states in an energy band of a finite crystal is equal
To the number of the primittive cells in it
Determine the mass of the chop saw blade if it has a radius of 13.97-cm and completes 1200 revolutions per minute and is held by a force of 1825 Newtons.
During a head-on car crash, a passenger in the front seat of the car accelerates from 13.0 m/s to rest in 0.10 seconds. The passenger is holding a 20.9 kg child on her lap. The passenger is wearing a seat belt, but the child is not. What force must the passenger exert on the child to prevent the child from smashing into the dashboard or windshield?
#333702 on Dec 2022