Physics, 19.08.2019 23:50 briannawoods13
All organisms in kingdom animalia are multicellular, meaning their bodies are composed of more than one cell. which other characteristic is common to organisms in this kingdom?
a.
all have a backbone.
b.
all are able to survive in water.
c.
all need to get food from an outside source.
d.
all take in oxygen through their gills.
and
which of these organisms are vertebrates in kingdom animalia?
choose all answers that are correct?
a.
worms
b.
frogs
c.
clams
d.
fish
Answers: 2
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The heater element of a 120 v toaster is a 5.4 m length of nichrome wire, whose diameter is 0.48 mm. the resistivity of nichrome at the operating temperature of the toaster is 1.3 × 10-6 ω·m. the toaster is operated at a voltage of 120 v. (a) what is the power drawn by the toaster? (b) if the cost of electricity is 12 ¢ per kilowatt-hour, and it takes 2 minutes to toast bread, how much does it cost for toasted bread? (c) when the heater element is at room temperature, is the resistivity in the nichrome wire greater than, less than, or equal to it’s resistivity when at operating temperature? explain.
Answers: 3
All organisms in kingdom animalia are multicellular, meaning their bodies are composed of more than...
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