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stiks02 [169]
2 years ago
15

If a chemical reaction has a AH value of -125 kJ, it would be considered what?

Physics
2 answers:
egoroff_w [7]2 years ago
4 0

exothermic

Explanation:

negative means it's losing energy

Gnom [1K]2 years ago
3 0
A an exothermic reaction
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What is one way in which radioactive decay is used to benefit society?
snow_lady [41]
<span>They are used to measure and map effluent and pollution discharges from factories and sewerage plants, and the movement of sand around harbours, rivers and bays. Radioactive materials used for such purposes have short half-lives and decay to background levels within days.</span>
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3 years ago
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Tina drove 3 miles north and 4 miles west to get to her grandmother’s house. Find the distance and displacement.​
TEA [102]

Answer:

distance = 3 + 4 = 7 mi

displacement is √(3² + 4²) = 5 mi

Explanation:

6 0
2 years ago
A 14.0 gauge copper wire of diameter 1.628 mmcarries a current of 14.0 mA. Part A: What is the potential difference across a 2.1
FrozenT [24]

Answer:

for copper potential difference is 2.4871 × 10^{-4} V

for silver  potential difference is 2.1256 × 10^{-4} V

Explanation:

given data

diameter D = 1.628 mm = 0.001628 m

current = 14.0 mA = 0.0140 A

length L = 2.15 m

to find out

potential difference

solution

we consider here

resistivity of silver =  1.47 × 10^{-8} ohm-m

resistivity of copper = 1.72 × 10^{-8} ohm-m

so we apply here resistance formula that is

Resistance = ρ × L / A     ...............1

so here area A = πr² = π(0.001628 /2)² = 2.0816 ×  10^{-6} m²

for copper Resistance = ρ × L / A

Resistance = 1.72 × 10^{-8}  × 2.15 / 2.0816 ×  10^{-6}

Resistance = 1.7765 × 10^{-2}  ohm

for silver Resistance = ρ × L / A

Resistance = 1.47 × 10^{-8}  × 2.15 / 2.0816 ×  10^{-6}

Resistance = 1.5183 × 10^{-2}  ohm

so

potential difference  is calculated as

for copper potential difference  = current × resistance

potential difference  = 0.0140 ×1.7765 × 10^{-2}

potential difference  = 2.4871 × 10^{-4} V

for silver  potential difference  = current × resistance

potential difference  =  0.0140 × 1.5183 × 10^{-2}

potential difference  =  2.1256 × 10^{-4} V

7 0
2 years ago
Describe and give an example of mutualism.
Slav-nsk [51]

Answer:

Mutualism, commensalism, parasitism, competition, and predation.

Explanation:

mutualism- relationship between two or more organisms where both are benefited. Example-oxpecker with rhino/zebra. They eat bugs off of them which means that they are getting food, while the rhino/zebra are getting cleaned up with pest control.

commensalism- relationship between two organisms where one benefits and the other isn't benefited or harmed. EX- tree frogs use plants as protectioin.he frog is benefited, and the plant is neither harmed nor benefited. Remora fish have a disk on their heads that they use to attach themselves to larger animals for protection. The animals they attach to are neither harmed nor benefited.  

parasitism- in a relationship where an organism benefits at the expense of the other. (one is benefited while the other is harmed) ex- fleas and ticks that live on cats and dogs, tape worms that live in people and animals that eat the food which means that the people aren't getting the food or nutrition that they eat. lice, etc

competition- interaction within organisms/species in which both the organisms/species are harmed and is apart of natural selection. Examples may include two males fighting over a mate, animals competing over food, limited habitats that they are fighting over, territory, etc.

predation- the preying of one animal on another. It's where the predator hunts and eats another organism which is its prey. categorized within-(1) carnivory, (2) herbivory, (3) parasitism, and (4) mutualism. Each type of predation can by categorized based on whether or not it results in the death of the prey.ex- owls hunting mice, wolves hunting rabbits, lion hunting gazelle, etc.

7 0
2 years ago
Acceleration is defined as
zalisa [80]
Acceleration is the rate of change of velocity per unit of time.
7 0
3 years ago
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