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3 years ago

9

Short-term memoryA) has a larger storage capacity than long-term memory.B) takes longer to retrieve than long-term memory.C) inv

olves transient modifications in the function of preexisting synapses, such as channel modification.D) two of these answers.E) all of these answers.

1 answer:

zaharov [31]3 years ago

6 0

Answer:D

Explanation:

Take longer time to retrieve than long term memory, involves transient modifications in the function of pre existing synapses, such as channel modifications.

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Answer:

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Explanation:

From the question we are told that:

Cast-iron block Dimension:

Length $l=0.7m=>700mm$

Width $w=30mm$

Feed $F=0.25mm/tooth$

Depth $dp=3mm$

Diameter $d=75mm$

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Rotation speed $N=200rpm$

Generally the equation for Approach is mathematically given by

$x=\sqrt{Dd-d^2}$

$X=\sqrt{75*3-3^2}$

$X=14.69mm$

Therefore

Effective length is given as

$L_e=Approach +object Length$

$L_e=700+14.69$

$L_e=714.69mm$

a)

Generally the equation for Machine Time is mathematically given by

$T_m=\frac{L_e}{F_m}$

Where

$F_m=F*n*N$

$F_m=0.25*8*200$

$F_m=400$

Therefore

$T_m=\frac{714.69}{400}$

$T_m=1.787min$

b)

Generally the equation for Material Removal Rate. is mathematically given by

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$MRR=\frac{700*30*3}{1.787}$

$MRR=35259.7mm^3/min$

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Answer:

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Explanation:

Strategy

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Given Data

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T = 750 N.m

Length of shaft

L = 1.2 m

Modulus of Rigidity

G = 77.2 GPa

Allowable Stress

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∅=4°

∅=4* $\pi$ /180

∅=69.813 *10^-3 rad

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г = T/J*c

г = [T/(J* $\pi$ /2*c^4)]*c

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Explanation:

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