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valentinak56 [21]
3 years ago
6

What is impossible for a machine to do?

Physics
2 answers:
lbvjy [14]3 years ago
6 0

Answer:

A) do a greater amount of work than the amount of work done on the machine

Explanation:

Art [367]3 years ago
4 0

Answer:

A) do a greater amount of work than the amount of work done on the machine

Explanation:

By the principle of conservation of energy, energy can never be created or destroyed.

To do more work by a machine than the amount of work done on the machine is impossible because to do so machine will have to create energy within itself which violates the principle of conservation of energy.

Extra bit,

These kind of machine are defined as perpetual-motion machines and there are many attempts in history to create one such device but all were failed.

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How can you tell when an object changes direction on velocity vs time graph
Grace [21]

In my opinion, that is one humungously fantastic question, that is not asked nearly often enough.

The answer is:. You can't ! None of the so-called "velocity/time" graphs shows any information about the direction of the motion, and there's no way to tell if it changes, from the graph.

There's no difference between the "velocity" graphs of an object in straight-line motion with constant speed, and another object in uniform circular motion. Both graphs are horizontal lines.

A "velocity" graph can't show direction OR displacement, and the way I see it, such a graph is not entitled to use the 5-dollar word 'velocity' at all. It is simply a graph of SPEED vs time, and no more.

So there !

3 0
3 years ago
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Describe the difference between a modified simple stomach (equine) and a monogastric
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this question is semi hard to answer but i hope this helps ^^
5 0
3 years ago
At room temperature of the 92 naturally occurring elements, state the number that are:
Romashka-Z-Leto [24]
At room temperature of the 92 naturally occurring elements, 11 are gases, 2 are liquids and the rest are solids. The 11 gases include: hydrogen, oxygen, chlorine, fluorine, iodine, nitrogen, xenon, neon, helium, krypton, and argon. The 2 liquids are bromine and mercury. 
8 0
4 years ago
What is the pressure in a gas container that is connected to an open-end U-tube manometer if thepressure of the atmosphere is 75
VARVARA [1.3K]

Answer:

The pressure in a gas container  is 839.44mmHg

Explanation:

Density of Mercury = 13.56g/cm³ = 13556kg/m³

P_{A} = P_{0} +  hρg/ P₀

where, g= acceleration due to gravity, 10m/s²

h= height= 8.6cm = 0.086m

P_{A}= hρg/ P₀

= 0.086 × 13556  × 10

= 11658.16 kgm/ m²s²

= 11658.16 N/m² = 11658.16pa

= 87.4434mmHg

where 1 torr = 1mmHg

P_{0}= 752torr = 752mmHg

P_{A = 752 + 87.4434

= 839.44mmHg

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If it takes 8 minutes for light from the Sun to reach the Earth, how long does it take to reach Saturn?
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It take sunlight 80 minutes to travel from the Sun to Saturn
7 0
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