Question

Asked Nov 6, 2019

2 views

Ch 18, Problem 44

A spring with an unstrained length of 0.071 m and a spring constant of 2.4 N/m hangs vertically downward from the ceiling. A uniform electric field directed upward fills the region containing the spring. A sphere with a mass of 5.0 × 10^{-3} kg and a net charge of +6.6 μC is attached to the lower end of the spring. The spring is released slowly, until it reaches equilibrium. The equilibrium length of the spring is 0.058 m. What is the magnitude of the external electric field?

Step 1

The forces acting on the system are the electric force, spring force and the weight of the sphere. The weight of the sphere acts downward whereas the spring force and the electric force act upward. Taking the upward direction to be positive, the force equation at equilibrium is given by

Step 2

The change in the length of t...

Tagged in

Find answers to questions asked by student like you

Show more Q&A

Q: A 1800 kg car traveling at a speed of 13 m/s skids to a halt on wet concrete where μk = 0.30. How...

A: Consider the weight of the car be w, mass of the car be m, the normal reaction of the car be N, the ...

Q: A student pushes a baseball of m = 0.18 kg down onto the top of a vertical spring that has its lower...

A: a)The required speed from conservation of energy is,

Q: A train locomotive pulls a train with a mass of 1.00 ✕ 107 kg on level rails. The locomotive exerts ...

A: According to the Newton’s second law, the acceleration of the train,Substitute the values,

Q: Draw a vector that represents a displacement of 40 miles east. Then, from that point, draw one that ...

A: Let us draw the figure:

Q: How would I answer part D?

A: Write the expression for the centripetal force.

Q: A 59.0-kg ice skater is moving at 4.07 m/s when she grabs the loose end of a rope, the opposite end ...

A: a)The required force is,

Q: ms of appeal in Pirate Port I Public 0f Whiworth Fibrary A Z Databases Course Homne X Join comershon...

A: Given:Drag coefficient = 0.90Cross-section area = 0.48 m2Velocity = 7.3 m/sEfficiency = 25%

Q: Need help on a review question

A: the work done is equal to the change in kinetic energy,the work done is,

Q: -The force exerted by the wind on the sails of a sailboat is 330 N north. The water exerts a force o...

A: Given situation can be picturized as follows: