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kondor19780726 [428]
3 years ago
5

What is an cell described in

Physics
1 answer:
podryga [215]3 years ago
5 0
Cells are the  basic building blocks of all living things. The  human body is  composed of trillions of cells.
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Which types of waves requires matter to carry energy? electromagnetic waves only mechanical waves only electromagnetic and mecha
gogolik [260]

Answer: Mechanical waves

Explanation:

Mechanical waves require a medium in order to transport their energy from one location to another. A sound wave is an example of a mechanical wave. Sound waves are incapable of traveling through a vacuum.

7 0
3 years ago
Read 2 more answers
The young tree was bent and has been brought into a vertical position by the three guy cables. If tension at AB = 0, AC = 10 lb,
KATRIN_1 [288]

Answer:

The young tree, originally bent, has been brought into the vertical position by adjusting the three guy-wire tensions to AB = 7 lb, AC = 8 lb, and AD = 10 lb. Determine the force and moment reactions at the trunk base point O. Neglect the weight of the tree.

C and D are 3.1' from the y axis B and C are 5.4' away from the x axis and A has a height of 5.2'

Explanation:

See attached picture.

3 0
3 years ago
The power rating of an electric lawn mower is 2000 watts if lawnmower is used for 120 seconds how many joules of work van it do
Scorpion4ik [409]
1 watt = 1 joule/sec

2,000 watts = 2,000 joules/sec

                     (2,000 joule/sec) x (120 sec)

                  = (2,000 x 120)  (joule-sec/sec)

                  =   240,000 joules .
        
4 0
2 years ago
The columns in the periodic table are called groups. What do the elements in group 18 have in common
dimaraw [331]

Answer: D

Explanation:

they are all odorless, colorless, monatomic gases with very low chemical reactivity.

Brainliest?

7 0
2 years ago
The diagram shows a 225 N load attached to a moveable pulley.What amount of force is needed to lift the load?
hram777 [196]
I'm happy to know that the diagram shows how it's all set up.
If I could see the diagram, then I could probably do a much
better job with an answer.  As it is ... 'flying blind' as it were ...
I'm going to wing it and hope it's somewhat helpful.

If the pulley is movable, then I'm picturing one end of the rope
tied to a hook in the ceiling, then the rope passing down through
the pulley, then back up, and you lifting the free end of the rope.

A very useful rule about movable and combination pulleys is:
the force needed to lift the load is

            (the weight of the load)
divided by
            (the number of strands of rope supporting the load) .

With the setup as I described it, there are 2 strands of rope
supporting the load ... one on each side of the pulley.  So the
force needed to lift the load is

                                 (250 N) / 2  =  125 N .

6 0
2 years ago
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