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3 years ago

An 80 kg object has a µk = 0.35 and a µs = 0.60. Assuming it is on a flat surface

Physics

1 answer:

Over [174]3 years ago

6 0

Answer:

What is the normal force on the object (draw a diagram if needed)

784 N

How much force is required to get the object to start to move from rest (max static friction)?

470.4 N

When the object starts moving, what is the force of kinetic friction?

274.4 N

If the moving object has a tension force of 300N to the right pulling it, what is the net force on the object in the horizontal direction? 784 N

What is the acceleration (with direction) of the object based on your answer for part d? Remember that a = net force/m.

Explanation:

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How can humans increase the rate of endangered of extinct species

labwork [276]

I would think A. Reduce Environmental Impacts.

If you build and populate more zoos, some of the endangered species might not be able to survive in captivity

If you introduce new predators they are going to kill all the endangered species and if you pass new laws about land use some people may kill the species

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4 years ago

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At a distance of 41 ft , an ionizing radiation source delivers 5.0 rem of radiation. How close could you get to the source and s

mash [69]

Answer:

at distance 18.33 ft no biological effects

Explanation:

given data

distance = 41 ft

radiation = 5 rem

to find out

how close get so no biological effects

solution

we know here that intensity of radiation R is inversely proportional to (radiation)²

so here equation will be

$\frac{I1}{I2} = (\frac{R2}{R1})^{2}$ .............1

here I is intensity

so here I1 = 25

because for 0 to 25 there is no detectable effects and for 25 to 100 it will . temporary decrease so

we take 25 because dose is less than 25 so we take that highest value

$\frac{I1}{I2} = (\frac{R2}{R1})^{2}$

$\frac{25}{5} = (\frac{41}{R1})^{2}$

R1 = 18.33 ft

so at distance 18.33 ft no biological effects

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3 years ago

Answer the question in the image

artcher [175]

Due to my computer i can not see the pic so can u explain your question please

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4 years ago

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To rid the body of wastes, including excess water and salts" is the purpose of what human body system? A) Digestive B) Excretory

Verizon [17]

Digestive I believe.

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4 years ago

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What happens when all of the elements collide at the same time?

Triss [41]

Answer:Some of the heavier elements in the periodic table are created when pairs of neutron stars collide cataclysmically and explode

Explanation:

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2 years ago