Atextbook of mass 2.10 kg rests on a frictionless, horizontal surface. a cord attached to the book passes over a pulley whose diameter is 0.100 m , to a hanging book with mass 2.99 kg . the system is released from rest, and the books are observed to move a distance 1.26 m over a time interval of 0.790 s . part a what is the tension in the part of the cord attached to the textbook? =9.66n part b what is the tension in the part of the cord attached to the book? take the free fall acceleration to be = 9.80m/s^2 =15.5n part c what is the moment of inertia of the pulley about its rotation axis? take the free fall acceleration to be = 9.80 m/

For problems 1-3, consider a simple dc brush motor with a permanent magnet stator. with an an consider a simple dc brush motor with a permanent magnet ae supply voltage of 100 v, the no-load speed of the motor is 1000 rpm. this motor can provide a torque of 1.9 n-m at 800 rpm drawing a current of 2 a current are both zero at no load.) 1. with an armature supply voltage of 100 v, the motor is operated at 900 rpm. what is the motor torque? what is the mechanical power delivered by the motor? what is the current draw? what is the electrical power input? what is the energy efficiency of the motor? with an armature supply voltage of 100 v, the motor is operated at 1100 rpm (where it acts as a generator). what torque input is required? what mechanical power is required what current is generated? what is the electrical power generated? what is the energy efficiency of the motor acting as a generator? 2. with an armature supply voltage raised to 120 v, the motor is operated at 1000 rpm. what is the no-load speed? what is the motor torque? what is the mechanical power delivered by the motor? what is the current draw? what is the electrical power input what is the energy efficiency of the motor? 3.

Drag each item into the proper state of matter category.

What are similarities and differences of reflection, refraction, diffraction and absorption?