1. Tonya had a hard time deciding between the Big Burger and the Crispy Chicken sandwiches, her two favorites.

She chose the chicken because she had more recently had a burger. What was her opportunity cost?

An electric circuit can have no current when a switch is closed. True False

What kinds of difficulties do you foresee when scientists and non scientists try to communicate?

What is not needed for a charge to flow through a conducting wire?

A ball is thrown straight upward and then returns to the earth. does the acceleration change during this motion

Why do sunspots appear darker than their surroundings?

Lindsay is late to class and is running down the hallway at a speed of 2 m/s the length of the hallway is 150 meters. How long will it take her to run down the hallway?

Which of the following is evidence that groundwater causes erosion and deposition?

Changing the direction of current will or will not affect the strength of an electromagnet

A swimming pool has the dimensions of 10 meters, 5 meters, and 1 meter. What is the pool's volume? 50 m 50 m3 50 m2 25 m3

A child pushes horizontally on a box of mass m which moves with constant speed v across a horizontal floor. The coefficient of friction between the box and the floor is μ. At what rate does the child do work on the box?