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3 years ago

8

ANSWER ASAP . Which of the screws below requires the least amount of effort force to turn?

2 answers:

emmasim [6.3K]3 years ago

6 0

Answer:

The answer is screw x

Explanation:

A screw is an inclined plane that spirals around a cylinder. To help visualize this, imagine a playground slide that sprirals around a central pole. The threads on a screw are the outside edge of a plane that wraps around the screw's central axis.

The closer together a screw's threads are, the longer the inclined plane. The longer the inclined plane, the less effort force required to turn the screw. The screw in image X requires the least amount of effort force to turn because its threads are the closest together.

tigry1 [53]3 years ago

4 0

Answer:

Screw X

Explanation:

In the screw x, the threads of the inclined plane are closer together. Therefore this screw has a greater mechanical advantage and hence it is easier to turn than the other screws.
Therefore,it takes less force to penetrate the wood with the screw X.

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ANSWER FAST!!!!

Amiraneli [1.4K]

Power = (voltage) x (current)

Power = (240 volts) x (4 Amp)

Power = 960 watts

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3 years ago

Infrared radiation from young stars can pass through the heavy dust clouds surrounding them, allowing astronomers here on Earth

Semmy [17]

Answer:

$\lambda=6.83\times 10^{-5}\ m$

Explanation:

Given that,

An infrared telescope is tuned to detect infrared radiation with a frequency of 4.39 THz.

We know that,

1 THz = 10¹² Hz

So,

f = 4.39 × 10¹² Hz

We need to find the wavelength of the infrared radiation.

We know that,

$\lambda=\dfrac{c}{f}\\\\\lambda=\dfrac{3\times 10^8}{4.39\times 10^{12}}\\\\=6.83\times 10^{-5}\ m$

So, the wavelength of the infrared radiation is $6.83\times 10^{-5}\ m$ .

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2 years ago

420 hg = _____ cg help please

kondaur [170]

4200000 is your answer hope this helps

4 0

3 years ago

Read 2 more answers

Am i correct? If not then which one

cupoosta [38]

Answer:

Yes, it's correct

Explanation:

Newton's second Law states that the acceleration of an object is proportional to the net force applied on it, according to the equation:

$F=ma$

where

F is the net force on the object

m is the mass of the object

a is the acceleration of the object

We can re-arrange the previous equation in order to solve explicitely for a, the acceleration, and we find:

$F=ma\\\frac{F}{m}=\frac{ma}{m}\\\frac{F}{m}=a\\a=\frac{F}{m}$

So, we see that the acceleration is proportional to the net force and inversely proportional to the mass of the object.

4 0

3 years ago

The third floor of a house is 8m above street level. How much work is needed to move a 136kg refrigerator to the third floor?

jonny [76]

m = Mass of the refrigerator to be moved to third floor = 136 kg

g = Acceleration due to gravity by earth on the refrigerator being moved = 9.8 m/s²

h = Height to which the refrigerator is moved = 8 m

W = Work done in lifting the object

Work done in lifting the object is same as the gravitational potential energy gained by the refrigerator. hence

Work done = Gravitation potential energy of refrigerator

W = m g h

inserting the values

W = (136) (9.8) (8)

W = 10662.4 J

8 0

2 years ago