Wire 2 is twice the length and has twice the cross-sectional area that of wire 1. What is the ratio R2/R1 of their resistances?

What is the resistance of 1.0 m of a solid cylindrical metal cable having a diameter of 0.40 inches and a resistivity of 1.68 × 10-8 Ω ∙ m?

Compared to the free market, the change in producer surplus from this policy equals

A rational decision maker takes an action only if

Suppose that instead of a tax, government imposes a subsidy of $4. What is the consumer surplus?

Suppose that instead of a price floor, there is a price ceiling equal to $6. Consumer surplus equals

You are the Independent System Operator (ISO) in an electricity market. You have received the bid information in the table below for a double auction. Each buyer’s bid is an offer to buy one unit of electricity. Each seller’s bid is an offer to sell one unit of electricity.

What is the total surplus from this subsidy?

If the price elasticity of a good is 1.5, then a 3% decrease in the price results in a ___ percent increase in the quantity demanded

Consider the the market depicted below. Suppose the Government imposes a subsidy of $4 per unit in this market.