Many gels and colloids are thixotropic materials, exhibiting a stable form at rest but becoming fluid when agitated. Some fluids are anti-thixotropic: constant shear stress for a time causes an increase in viscosity or even solidification. Constant shear stress can be applied by shaking or mixing. Fluids which exhibit this property are usually called rheopectic. They are much less common.
Hereâs a look at what the $19.95 excludes and how it may all add up in a very consumer-unfriendly fashion: Mileage: Rack up 50 miles between pickup and drop-off, and youâre looking at an added mileage cost of $29.50 for the van (at 59 cents a mile) and $44.50 for the truck (at 89 cents a mile). (Theoretically, U-Haul arrived at these specific mileage rates so that it could charge â and advertise â the $19.95 base fee.)
Each year, the IRS releases an optional standard mileage rate. As of July 1, 2008, that rate is 58.5 cents per mile traveled for business purposes, 27 cents per mile for medical and moving travel, and 14 cents per mile for travel for charitable purposes.You can use the standard mileage rate as a benchmark to reimburse employees for business travel.For tax purposes, itâs much less complicated to go by the standard rates than to require employees to keep track of their actual vehicle expenses.f you donât reimburse employees for mileage expenses, they may deduct from their gross income (1) the amount paid under their own mileage allowance or (2) the IRSâ standard rate multiplied by the number of miles driven for business purposes, whichever is less.