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Damm [24]
2 years ago
9

A block with mass m = 7 kg is attached to two springs with spring constants kleft = 37 N/m and kright = 48 N/m. The block is pul

led a distance x = 0.21 m to the left of its equilibrium position and released from rest. 1) What is the magnitude of the net force on the block (the moment it is released)? 2) What is the effective spring constant of the two springs? 3) What is the period of oscillation of the block?
4) How long does it take the block to return to equilibrium for the first time? 5) What is the speed of the block as it passes through the equilibrium position? 6) What is the magnitude of the acceleration of the block as it passes through equilibrium? 7) Where is the block located, relative to equilibrium, at a time 1.23 s after it is released? (if the block is left of equilibrium give the answer as a negative value; if the block is right of equilibrium give the answer as a positive value). 8) What is the net force on the block at this time 1.23 s? (a negative force is to the left; a positive force is to the right).
9) What is the total energy stored in the system? 10) If the block had been given an initial push, how would the period of oscillation change?
Physics
1 answer:
Morgarella [4.7K]2 years ago
3 0
Dab
10. <span>A block with mass m = 6.2 kg is attached to two springs with spring constants kleft = 31.0 N/m and kright = 49.0 N/m. The block is pulled a distance x = 0.2 m to the left of its equilibrium position and released from rest 

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Answer:

c. 972

Explanation:

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1 feet is equal to 12 inches, so:

a=1.5ft*\frac{12in}{1ft}=18in\\b=(1+\frac{1}{2})ft\\b=\frac{3}{2}ft*\frac{12in}{1ft}=18in

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V=18in*18in*3in\\V=972in^3

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2 years ago
Which is NOT a "commonsense" psychological myth?
disa [49]

Answer:A. infants who listen to Mozart are smarter than those that don't.

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All other options such as MOST OLDER PEOPLE LIVE SAD AND SOLITARY LIVES ARE CORRECT AS THEY ARE KNOWN TO BE MORE LIKELY TO FALL SICK EASILY.

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only the first option which says infants who listen to Mozart are smarter than those that don't listen to Mozart is not a "commonsense" psychological myth.

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If Emily throws the ball at an angle of 30∘ below the horizontal with a speed of 14m/s, how far from the base of the dorm should
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Emily throws the ball at 30 degree below the horizontal

so here the speed is 14 m/s and hence we will find its horizontal and vertical components

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v_y = 14 sin30 = 7 m/s

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\delta y = 4 m

now we will use kinematics in order to find the time taken by the ball to reach at Allison

\delat y = v_y *t + \frac{1}{2} at^2

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d = v_x * t

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kramer

Answer:

Er = 108 [J]

Explanation:

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200 - 44 - 48 = Er

Where:

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Er = 108 [J]

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2 years ago
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