Jade wants to measure the thickness of a copper wire. she wound the copper wire 30 times around a pencil and used a ruler to measure the length
of the wound wire as shown in the figure
ttt
10
1
2
cm
which of these is the most accurate thickness of the copper wire?
o 0.001 cm
0.005 cm
0.01 cm
0.05 cm

Which of the following are sources of revenue for media companies? a. direct sales to producers b.advertising and subscriptions c. online purchase d. capital investments

Acalorimeter is to be calibrated: 51.203 g of water at 55.2 degree c is added to a calorimeter containing 49.783 g of water at 23.5c. after stirring and waiting for the system to equilibrate, the final temperature reached is 37.6 degree c. specific heat capacity of water (s = 4.18 j/g∙degree c). calculate the calorimeter constant. (smδt)warm water = -[(smδt)cold water + (calorimeterδtcold water)]

Categorize them by metal, nonmetal, in periodic tableductilenon-ductilemalleableoften gain electrons easilygood conductorpoor conductorcan be liquidselements