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2 years ago

12

Tyler wants to learn about the types of insects in the soil near his house. Which would be a benefit of carrying out a descripti

ve investigation?

1 answer:

lara31 [8.8K]2 years ago

8 0

To gather more information and details on the soil

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Which statements accurately describe Dmitri Mendeleev’s contributions to the development of the periodic table? Check all that a

Levart [38]

He produced the first orderly arrangement of known elements, he used patterns to predict undiscovered elements

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If an object absorbs all colors but red, we see

julia-pushkina [17]

[I researched for you, since I am not in that particular level to know that knowledge yet. I assure this is accurate info :)]

The answer is A, red.
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2 years ago

Calculate the mass (in SI units) of (a) a 160 lb human being; (b) a 1.9 lb cockatoo. Calculate the weight (in English units) of

kondaur [170]

Explanation:

1. Force applied on an object is given by :

F = W = mg

(a) A 160 lb human being, F = 160 lb

g = acceleration due to gravity, g = 32 ft/s²

$m=\dfrac{F}{g}$

$m=\dfrac{160\ lb}{32\ ft/s^2}$

m = 5 kg

(b) A 1.9 lb cockatoo, F = 1.9 lb

$m=\dfrac{F}{g}$

$m=\dfrac{1.9\ lb}{32\ ft/s^2}$

m = 0.059 kg

2. (a) A 2300 kg rhinoceros, m = 2300 kg

$W=2300\ kg\times 32\ ft/s^2=73600\ lb$

(b) A 22 g song sparrow, m = 22 g = 0.022 kg

$W=0.022\ kg\times 32\ ft/s^2=0.704\ lb$

Hence, this is the required solution.

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2 years ago

If the velocity of a car is 45 km/h west, how far can it travel in 0.5 hours?

Anarel [89]

45km/h * 0.5h= 22.5km

The car can travel 22.5km in 0.5 hours

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HELP PLSSSSSSSSSS<br> lithium has three protons. which model shows a neutral atom of lithium?

wolverine [178]

Answer:

B

Explanation:

the 3 electrons makes it neutral

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