In which of these samples do the molecules most likely have the least kinetic energy?

A) solid iron at 25°C

B) molten iron at 1600°C

C) solid iron at 98°C

D) iron vapor at 2900°C

What is the best term to use when describing the energy of position? A) chemical B) kinetic C) potential D) electromagnetic

A spring has a force constant of 1 Ã - 105 n/m. how far must it be stretched for its potential energy to be 47 j? answer in units of m.

Which of the following statements are true? A Simple machines use electricty B Simple machines are made from only one part C Compound machines are made from two or more simple machines D Compound machines make the job harder

A disk with a hole has inner radius rin and outer radius rout. the disk is uniformly charged with total charge q. find an expression for the on-axis electric potential at distance z from the center of the disk

An airplane touches down on the runway with a speed of 70 m/s2. Determine the airplane after each second of its deceleration.

Describe the possible long term impact of a catastrophic event

Calculate the mass defect of the helium nucleus 42He. The mass of neutral 42He is given by MHe=4.002603u.

A transparent film laminated to a fabric is identified in the study material as a. stretch fabric. b. PVC. c. a skin. d. two-faced fabric

Technician A says that all friction and steel plates in a clutch pack should be replaced during and overhaul. Technician B says that the automatic transmission fluid cooler should always be flushed when a unit is rebuilt or replaced.

Cold water (cp = 4180 J/kg·K) leading to a shower enters a thinwalled double-pipe counterflow heat exchanger at 15°C at a rate of 1.25 kg/s and is heated to 60°C by hot water (cp = 4190 J/kg·K) that enters at 100°C at a rate of 4 kg/s.