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2 years ago

Can a machine like a lever, produce a greater force than what you put into it? Can it increase the energy that you put into it?

Physics

2 answers:

morpeh [17]2 years ago

7 0

Answer:

yes

Explanation:

the force is multiplied by the levers length of the handle

Ipatiy [6.2K]2 years ago

3 0

Answer:

Yes, a lever can produce greater force than what you put into it, but it does not increase the energy that you put into it. Energy is conserved, it cannot be created or destroyed, just moved.

Explanation:

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Match the organs to the functions they perform during digestion. passes food to esophagus

mixas84 [53]

Answer:

the mouth I think

Because: the oesophagus is the throat and the mouth is how the food gets to the oesophagus. might be wrong because I'm not sure about the organ part but I'm pretty sure that's all it could be

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3 years ago

What determines velocity rather than speed??

Stella [2.4K]

Velocity - the speed of something in a given direction
Speed - rapidity in moving, going, traveling, proceeding, or performing; swiftness; celerity
Velocity is the speed in a certain direction, whereas speed is just the rate of fastness.
Does that make sense?

3 0

3 years ago

A 103 kg physics professor has fallen into the Grand Canyon. Luckily, he managed to grab a branch and is now hanging 93 m below

siniylev [52]

Answer:

125.83672 seconds

Explanation:

P = Power of the horse = 1 hp = 746 W (as it is not given we have assumed the horse has the power of 1 hp)

m = Mass of professor = 103 kg

g = Acceleration due to gravity = 9.8 m/s²

h = Height of professor = 93 m

Work done would be equal to the potential energy

$W=mgh\\\Rightarrow W=103\times 9.8\times 93\\\Rightarrow W=93874.2\ J$

Power is given by

$P=\frac{W}{t}\\\Rightarrow t=\frac{W}{P}\\\Rightarrow t=\frac{93874.2}{746}\\\Rightarrow t=125.83672\ seconds$

The time taken by the horse to pull the professor is 125.83672 seconds

6 0

3 years ago

A football player kicks the ball at a 45 degree angle. Without an effect from the wind, the ball would travel 60.0m horizontally

Ronch [10]

B when the ball is at its maxium height

5 0

3 years ago

How does the diameter of the disk of milky way galaxy compare to its thickness?

weqwewe [10]

The diameter is about 100 times as great as the thickness.

7 0

3 years ago