Physics, 05.05.2020 17:45 daquanmcqueen77
A block of mass m attached to the end of a spring of spring constant undergoes simple harmonic motion with amplitude and angular frequency . The position of the block is described by a cosine function with an initial phase angle phi=0. Suppose that each of the variables m,,, and phi is increased in value.
1. Classify which increases produce an increase in the frequency of oscillation and which do not. Increases frequency Does not increase frequencyOptions:a. increase Ab. increase kc. increase md. increase phi
Answers: 3
Physics, 22.06.2019 01:30
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.
Answers: 3
Physics, 22.06.2019 01:30
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Physics, 22.06.2019 17:40
Aball is thrown horizontally from a cliff at 8m/s .in what direction is the ball moving 2s later?
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A block of mass m attached to the end of a spring of spring constant undergoes simple harmonic moti...
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