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Elina [12.6K]
3 years ago
5

Instructions:Select the correct answer. What falls in the gray area between living and nonliving things? bacteria mold virus yea

st
Physics
2 answers:
viva [34]3 years ago
6 0
Virus. it's only living when it enters a host's body as it's a parasitic organism
Scilla [17]3 years ago
3 0

Answer:

virus

Explanation:

Viruses are considered organisms at the limit of life. On the one hand they resemble organisms that have genes and evolve by natural selection and reproduce by creating multiple copies of themselves. However, they lack cellular structure, which is the pillar of life. It can only multiply within the cells of other organisms.

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If it takes 100 N to move a box 5 meters, what is the work done on the box?
jeyben [28]

Answer:  D.   500 J

=========================================================

Explanation:

To find the amount of work done, we multiply the force by displacement

work = force*displacement

work = (100 N)*(5 m)

work = (100*5) Nm

work = 500 J

In this case, "Nm" refers to "Newton meters" and not "nanometers"

1 newton meter is equal to 1 joule

7 0
2 years ago
Suppose you drop a tennis ball from a height of 6 feet. After the ball hits the floor, it rebounds to 80% of
sasho [114]
The formula to solve this is (.80)^3 X 6 and the answer would be 3.1 feet. That is how high the ball will rebound after its third bounce. Thank you for posting your question. I hope that this answer helped you. Let me know if you need more help. 
3 0
3 years ago
Read 2 more answers
Sawyer launches his 180 kg raft on the Mississippi River by pushing on it with a force of 75N. How long must Sawyer push on the
Daniel [21]

Answer: 4.8 s

Explanation:

We have the following data:

m=180 kg the mass of the raft

F=75 N the force applied by Sawyer

V=2 m/s the raft's final speed

V_{o}=0 m/s the raft's initial speed (assuming it starts from rest)

We have to find the time t

Well, according to Newton's second law of motion we have:

F=m.a (1)

Where a is the acceleration, which can be expressed as:

a=\frac{\Delta V}{\Delta t}=\frac{V-V_{o}}{t-t_{o}} (2)

Substituting (2) in (1):

F=m\frac{V-V_{o}}{t-t_{o}} (3)

Where t_{o}=0

Isolating t from (3):

t=\frac{m(V-V_{o})}{F} (4)

t=\frac{180 kg(2 m/s-0 m/s)}{75 N}

Finally:

t=4.8 s

6 0
3 years ago
Kinetic and potential; what type of energy is each of the points
miskamm [114]

Answer:

1 potential

2 kenitic

3 kenitic

4 potential

5 kenitic

6 potential

7 0
3 years ago
Why is an element considered a pure substance?
anastassius [24]

Answer:

An element is a pure substance and is made of only one type of atom.

Explanation:

It cannot be broken down into a simpler substance.

3 0
2 years ago
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