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Two 10-cm-diameter charged rings face each other, 21.0cm apart. Both rings are charged to + 50.0nC. What is the electric field strength at the midpoint between the two rings?
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Question: The three 250g masses are connected by massless, rigid rods. What is the triangle's moment of inertia about the axis through the center? What is the triangle's kinetic energy if it rotates about the axis at 6. ...
An object traveling with a speed of 37.7 suddenly experiences a constant acceleration of 7.71 m/s 2 . What distance does this object travel in 6.48 seconds?
How are chemical and physical changes different. What are some demonstrations that you might do to help your students differentiate between a chemical and physical change?
Question: Suppose you have a fixed charge of -15.0 nC at point X. Points A and B are to the right of point X at distances of 20.0 cm and 40.0 cm from X respectively. Calculate the following: a) the potential at points A ...
Question: Which statements about potential energy are correct? Select all that apply. a) The potential energy of a pair of interacting charged objects increases as the distance between them increases. b) Potential energy ...
An object moves with constant acceleration 4.45 m/s^2 and over a time interval reaches a final velocity of 10.0 m/s. If its original velocity is 5.00 m/s, what is its displacement during the time interval? What is the di ...
Problem: An athlete performing a long jump leaves the ground at a 28.2 degree angle and lands 7.67 m away. A) What was the takeoff speed? B) If this speed were increased by just 5.0%, how much longer would the jump be?
Question: A steel cable with mass is lifting a girder. The girder is speeding up. Part A Draw a free-body diagram for the steel cable. Draw the vectors starting at the black dots. The location and orientation of the vect ...
Two forced of magnitudes 6.0 N and 8.0 N act on an object. What relationship between the directions gives the smallest magnitude net force and what is this magnitude?
A system of four particles moves along one dimension. The center of mass of the system is at rest, and the particles do not interact with any objects outside of the system. Find the velocity, v4, of particle 4 at t1 = 2. ...
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