When we model a pendulum, we only include the force of gravity and the force of tension on the idealized string (or other contact force which serves to change the direction of motion of the pendulum). This idealized pendulum will swing forever. show answer No Attempt In real life, pendulums eventually stop moving. Why is this
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Physics, 22.06.2019 02:00
Transfer chemicals from one location to another to weather objects. a-water b-physical weathering c-chemical weathering
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Physics, 22.06.2019 11:30
Arocket starts from rest and moves upward from the surface of the earth. for the first 10.0 s of its motion, the vertical acceleration of the rocket is given by ay = 12.80 m/s32t, where the +y-direction is upward. (a) what is the height of the rocket above the surface of the earth at t = 10.0 s? b) what is the speed of the rocket when it is 325 m above the surface of the earth?
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Physics, 22.06.2019 16:50
Two loudspeakers, 5.5 m apart and facing each other, play identical sounds of the same frequency. you stand halfway between them, where there is a maximum of sound intensity. moving from this point toward one of the speakers, you encounter a minimum of sound intensity when you have moved 0.33 m . assume the speed of sound is 340 m/s.part a) what is the frequency of the sound? part b) if the frequency is then increased while you remain 0.21 m from the center, what is the first frequency for which that location will be a maximum of sound intensity? express your answer to two significant figures and include the appropriate units.
Answers: 2
Physics, 22.06.2019 18:50
8.29 two streams containing pyridine and acetic acid at 25°c are mixed and fed into a heat exchanger. due to the heat-of-mixing effect, it is desired to reduce the temperature after mixing to 25°c using a stream of chilled ethylene glycol as indicated in the diagram. calculate the mass flow rate of ethylene glycol needed. the heat capacity of ethylene glycol at these conditions is approximately 2.8 kj/(kg k), and the enthalpy change of mixing (δmixh) is given below.
Answers: 3
When we model a pendulum, we only include the force of gravity and the force of tension on the ideal...
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