The direction of a magnetic field at a point can be determined by a compass
Indicate whether the statement is true or false
T
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Answer the following statement true (T) or false (F)
A 1.00 kg mass is connected to a spring with a spring constant of 9.00 N/m. If the initial velocity is 4.00 cm/s and the initial displacement is 0.00 cm, then what is the maximum spring potential energy of the simple harmonic motion?
A. 
B. 
C. 
D. 
E. 
The plates of a parallel-plate capacitor are maintained with constant voltage by a battery as they are pulled apart. What happens to the strength of the electric field during this process?
A) It decreases. B) It increases. C) It remains constant. D) There is no way to tell from the information given.
The mass in the figure below slides on a frictionless surface
When the mass is pulled out, spring 1 is stretched a distance x1 from its equilibrium position and spring 2 is stretched a distance x2. The spring constants are k1 and k2, respectively. The force pulling back on the mass is
?
?
?
a.
?k2x1.
b.
?k2x2.
c.
?(k1x1 + k2x2).
d.
