What benefit is gained by the addition of the iron core in an electromagnet

Assume 10,000 electrons were transferred from your hair to the balloon. a. What is the charge in Coulombs on the balloon? b. What is the charge in Coulombs on your hair? c.

The coordinates of an object moving in the xy-plane vary with time according to the equations x = - 9.14 sin ωt and y = 4.00 - 9.14 cos ωt, where ω is a constant, x and y are in meters, and t is in seconds.

What is the following product? Assume x≤0 and y≤0 √5x^8y^2 * √10x^3 * √12y 3x^5y√3xy 10x^5y√6xy 3x^3y√3x^2y^2 10x^3y√6x^2y^2

What would best suit data that describes how a part relates to the whole 1. Line graph2. Bar graph 3. Circle graph 4. Scientific notation

What are 2 factors that affect the frictional force between 2 surface science?

Which of the following is the best definition of an isotope? A. elements of the same kind with different numbers of neutrons B. elements of the same kind that have lost electrons C. elements of the same kind that have different electrical charges

Two cars approach each other; both cars are moving westward, one at 85 km/h, the other at 54 km/h. what is the magnitude of the velocity of the first car relative to (in the frame of reference of) the second car? answer in units of km/h.

What usually causes high concentration of minerals to form

The courtroom role that possesses the most discretion is?

What is the main purpose of a simple machine?