Physics, 30.03.2020 19:17 therealdest

A 1.50 m -long, 550 g rope pulls a 14.0 kg block of ice across a horizontal, frictionless surface. The block accelerates at 2.50 m/s2 . How much force pulls forward on (a) the ice, (b) the rope?

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Answer from: hoolio75

a) 35 N force pulls on the Ice

b) 36.375 N force pulls on the rope

Explanation:

Mass of the rope, $m_{R} = 550g = 0.55 kg$

Length of the rope, $l_{R} = 1.50 m$

Mass of the Ice, $m_{I} = 14.0 kg$

Acceleration of the ice block, $a_{I} = 2.50 m/s^{2}$

a) The amount of force that pulls forward on the Ice, $F_{I}$

$F_{I} = m_{I} a_{I} \\F_{I} = 14 * 2.5\\F_{I} = 35 N$

b) The amount of force that pulls forward on the rope, $F_{R}$

Since the rope is pulling the ice, both the force on the ice and the force on the rope alone combine to pull the rope.

Moreover, both the ice and the rope accelerate equally, $a_{R} = 2.5 m/s^{2}$

$F_{R} = 35 + m_{R} a_{R} \\F_{R} = 35 + (0.55*2.5)\\F_{R} = 36.375 N$

Answer from: Quest

305.7

explanation:

density =m/v

density =917/3.00

density = 305.

approximately = 305.7

in four significant figures

Answer from: Quest

bacteria that live on the ocean floor are sustained by phytoplankton. phytoplankton, microscopic marine photosynthetic organisms, have a vastly significant role to play not only in the marine food web of which they’re part of, but also on a more global scale. despite their infinitely small size in comparison to other marine organisms, these tiny creatures occupy an immensely important ecological niche: they are the foundation of the marine food web, and as primary producers, play key roles in supporting all other organisms in the marine environment, as well as in the regulation of the earth’s climate through the sequestration of carbon, oxygen production, and other related processes. phytoplankton account for roughly half of all global primary productivity; therefore, their significance extends far beyond the marine environment alone. there is an intriguing sense of irony in the realization that these tiny living beings that often live out their existence unnoticed and undetected by the rest of the world, have such a far-reaching impact on the lives of virtually all other living organisms on the planet, particularly on those in the marine environment. the world that we have become accustomed to has been and is continuously shaped by the workings of these miniscule yet vital “plants of the sea”.

hope this !

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A 1.50 m -long, 550 g rope pulls a 14.0 kg block of ice across a horizontal, frictionless surface. T...

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