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Engineering Physics
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Calculate the kinetic energy(in joules) of a 2.5 g baseball thrown at a velocity of 7.3 m/s.
A wind turbine starts from rest and rotates through 800 rad in 25 s under a constant torque. What is the angular acceleration?
You have two flat metal plates, each of area 1.00 m , with which to construct a parallel-plate capacitor. If the capacitance of the device is to be 1.00 F, what must be the separation between the plates in m?
In a triangular arrangement of three-point masses:
mA=2 kg, located at coordinate (-40,-40)
mB=4 kg, located at coordinate (-40,20)
mC=6 kg, located at coordinate (20, 20)
What is the coordinate of the centre of mass of the system (coordinates are in mm)?A rope connected to a box of mass 57.8 kg is pulled by a net force of magnitude 5.1 N for 6.8 s. The box is initially at rest. Which of the following is the speed(in m/s) of the box after the 6.8 s interval?
A solid disk of mass 100 kg and radius 2 m is rolling without slipping on a horizontal surface. The centre of mass of the disk has a velocity of 0.2 m/s. Calculate the rotational kinetic energy of the disk.