# Shared Flashcard Set

## Details

Chapter 18: Solids Questions
Chapter 18: Solids Questions
26
Physics
12/31/2011

Term
 Define: elasticity
Definition
 a.) property of a body, b.) change in shape, c.) returns to original shape
Term
 Define: inelastic
Definition
 Materials do not resume their original state after force is removed.
Term
 Give me an equation for Hooke’s Law
Definition
 F=kx (Force is proportional to deformation distance)
Term
 Define in words: Hooke’s Law
Definition
 Amount of stretch or compression is directly proportional to the force applied
Term
 When is weight density commonly used?
Definition
 When discussing liquid pressure
Term
 Define: elastic limit
Definition
 A distance-stretch or compression at which permanent distortion occurs
Term
 Give me an equation for weight density.
Definition
 Weight/volume
Term
 _______________ _____________ return to their original shape when a deforming force is applied and removed, it the elastic limit is not reached.
Definition
 Elastic solids
Term
 What is the name of this law: Stretch or compression is proportional to the applied force (within the elastic limit)
Definition
 Hooke’s law
Term
 _____________ materials remain distorted after the force is removed.
Definition
 Inelastic
Term
 ________________ is the study of how size affects the relationships among weight, strength, and surface.
Definition
 Scaling
Term
 The density of gold is 19.3 g/cm3. What is its specific gravity?
Definition
 Density gold/density of water = 19.3 /1 = 19.3 (no dimension)
Term
 Give me an equation for: specific gravity
Definition
 mass object/mass of the same volume of water orweight object/weight of the same volume of water
Term
 Which has greater density, 1 g of uranium or the planet Earth?
Definition
 Uranium
Term
 Which has greater density, 5 kg of lead or 10 kg of aluminum?
Definition
Term
 Which has greater density, 1 kg of water or 10 kg of water?
Definition
 Same density
Term
 The atoms in a ________________ have an orderly arrangement.
Definition
 crystal
Term
 Give me an equation for density.
Definition
 Mass/volume
Term
 ____________________ is related both to the masses of the atoms and the spacing between atoms.
Definition
 Density
Term
 Why is a steel I beam wider at the top and bottom?
Definition
 The top and bottom bear the stress
Term
 What is the strongest shape for a building?
Definition
 Triangle, this is the only shape that does not twist and collapse
Term
 Define: scaling
Definition
 Relationship between weight, strength and surface area
Term
 Suppose a cube 1 cm long on each side is scaled to a cube 10 cm. long on each side. What is the new volume?
Definition
 (10 cm)3 or 1000cm3
Term
 Suppose a cube 1 cm long on each side were scaled up to a cube 10 cm long on each edge. What would be the x-sectional surface area?
Definition
 (10 cm)2 or 100 cm2
Term
 Suppose a cube 1 cm long on each side were scaled up to a cube 10 cm long on each edge. What is its total surface area?
Definition
 (6 sides) (area of one side) = (6)(10cm)2 = 600 cm2
Term
 Using the ratio: Surface area/Volume. For an elephant and a mouse, which ratio is larger?
Definition
 mouse
Supporting users have an ad free experience!