Multiple Choice
In the figure,two identical ideal massless springs have unstretched lengths of and spring constants of 700 N/m.The springs are attached to a small cube and stretched to a length L of 0.30 m as in Figure A.An external force P pulls the cube a distance
to the right and holds it there.(See Figure B.) The external force P,that holds the cube in place in Figure B,is closest to
A) 28 N.
B) 25 N.
C) 21 N.
D) 18 N.
E) 14 N.
Correct Answer:

Verified
Correct Answer:
Verified
Q40: The coefficient of the restitution of an
Q41: Block A (0.40 kg)and block B (0.30
Q42: It requires 49 J of work to
Q43: How long will it take a 7.08
Q44: In the figure,two boxes,each of mass 24
Q46: A 1000.0 kg car is moving at
Q47: A 1000 kg car experiences a net
Q48: An object attached to an ideal massless
Q49: A force <img src="https://d2lvgg3v3hfg70.cloudfront.net/TB6394/.jpg" alt="A force
Q50: Three forces,F<sub>1</sub> = 20.0 N,F<sub>2</sub> = 40.0