Classify the following statement as a characteristic
(a) of electric forces only,
(b) of magnetic forces only,
(c) of both electric and magnetic forces, or
(d) of neither electric nor magnetic forces.
The force exerted on a stationary charged object is nonzero.
1.electric forces
2.magnetic forces
3.both electric and magnetic forces
4.neither electric nor magnetic forces
1
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A 5.0-kg block is attached to an ideal massless spring whose spring constant is 125 N/m. The block is pulled from its equilibrium position at x = 0.00 m to a position at x = +0.687 m and is released from rest
The block then executes lightly damped oscillation along the x-axis, and the damping force is proportional to the velocity. When the block first returns to x = 0.00 m, its x component of velocity is -2.0 m/s and its x component of acceleration is +5.6 m/s2. (a) What is the magnitude of the acceleration of the block upon release at x = +0.687 m. (b) Find the damping constant b.
When a rigid body rotates about a fixed axis all the points in the body have the same angular acceleration
Indicate whether the statement is true or false
A body is oscillating up and down at the end of a spring. Let's consider when the body is at the top of its up-and-down motion.The acceleration
a. is zero. b. has its largest magnitude. c. points up. d. points down.
What are the properties of the neutral hydrogen gas that exists in the interstellar medium?
What will be an ideal response?