A toy rocket engine is securely fastened to a large puck that can glide with negligible friction over a horizontal surface, take

Answer:

Electric field lines radiate from positive charges and converge on negative charges. True

Electric field lines are continuous and do not have a start or end point. False

Electric field lines can never cross each other. True

In regions of space where the electric field is weak, the field lines are farther apart, and they are closer together in regions where it's strong. False

At any given point in space, the electric field vector aligns with the tangent to the electric field line at that location. True

Explanation:

Electric field lines emanate from positive charges and draw towards negative charges. They always move away from positive charges and head towards negative ones.

Electric field lines are continuous, without a definitive start or finish. False  

As the lines originate from positive charges and terminate at negative ones.

Electric field lines cannot cross one another. True

It’s not possible for them to intersect, as this would imply the field has multiple directions at one point. Moreover, the actual field value at that point would need to be determined by combining both field lines.

Electric field lines are spaced close together in areas where the electric field magnitude is potent and spaced apart in weak regions.False

This is incorrect as regions with higher field strength have lines that are closer together, while weaker regions have them farther apart.

At each location in space, the electric field vector coincides with the tangent to the corresponding field line at that point. True

This statement aligns with the definition of electric field lines.

I believe this is correct, I truly hope it helps you.

The accurate answer is 36 miles per hour

Explanation:

To calculate the average speed, start by determining the total distance and total time Lucy traveled, as average speed is the total distance divided by the total time.

Total Distance

Lucy is known to have covered 2/3 of the total distance initially, later finishing the journey with 60 miles. Therefore, the last segment of 60 miles corresponds to 1/3 of the total distance.

(Total distance)

Consequently, since 60 miles equals one-third, multiplying this by 3 gives the total distance: 180 miles.

This indicates the total distance traversed is 180 miles

Total Time

Lucy took 3 hours for the first part of her journey and 2 hours for the second, leading to a total time of 5 hours (3 + 2 = 5)

Determining Average Speed