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anzhelika [568]
2 years ago
5

Your mother asks you to carry a load of wood to the fireplace and lower it to the hearth. In doing this you have used your arms

as levers. Which statement describes this as a class three lever?
Question 13 options:

The wood in your hands was the fulcrum, the load your elbow, and the effort (input force) was supplied by your arm muscles.


The wood was the load in your hands, the fulcrum was your elbow and the effort (input force was supplied by your arm muscles.


The fulcrum was the muscles in your arms, the load was the wood in your hands and the effort (input force) was the elbow.
Physics
2 answers:
Evgesh-ka [11]2 years ago
8 0

Answer: The correct answer is the weight of the wood.

Explanation:

Hope this helps

erica [24]2 years ago
7 0

Answer:

4 more people pls

Explanation:

mark me brainelest pls

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inysia [295]

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1 Ampere = 1 coulomb per second
10 A = 10 coulombs per second

(2.0 x 10^20 electrons) x (coul / 6.25 x 10^18 electrons) / (10 coul/sec) =

         (2.0 x 10^20) / (6.25 x 10^18 x 10)    sec  =  <em>3.2 seconds</em>


6 0
3 years ago
Kim is ice-skating going 4.6 m/s. What is her velocity after 10 seconds ?
MArishka [77]

This is a uniform rectilinear motion (MRU) exercise.

To start solving this exercise, we obtain the following data:

<h3><u>Data:</u></h3>
  • v = 4.6 m/s
  • d = ¿?
  • t = 10 sec

To calculate distance, speed is multiplied by time.

We apply the following formula: d = v * t.

We substitute the data in the formula: the <u>speed is equal to 4.6 m/s,</u> the <u>time is equal to 10 s</u>, which is left as follows:

\bf{d=4.6\dfrac{m}{\not{s}}*10\not{s} }

\bf{d=46 \ m}

Therefore, the speed at 10 seconds is 46 meters.

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6 0
2 years ago
what happens to the density, volume, mass, and shape of an ice cube put in a glass jar and left out in the Sun.
Elden [556K]
Density I'm not sure
volume unchanged
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3 0
3 years ago
A ball of mass m is dropped from rest from a height h and collides elastically with the floor, rebounding to its original height
Jet001 [13]

Answer:

Explanation:

Given

mass m collides elastically with floor and jump to its original height I .e.velocity of rebound is same as the initial velocity

Impulse imparted by steel ball to the ground is given by the change in momentum of steel ball

J=\Delta P

and impulse is product of average force and time

so we need time to calculate the average force. So, option e is correct

3 0
3 years ago
Read 2 more answers
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siniylev [52]

Answer:

The lens to be used for the objective is lens A

Explanation:

The objective of a compound microscope

The focal length of the lens used for the objective = 1/(magnification obtained)

The focal length of most modern is equal to the tube length

The range of sizes for the focal length of a microscope is between 2 mm and 40 mm

Therefore, the appropriate lens to be used for the objective of the compound is lens A that has a focal length of 0.50 cm = 5 mm

6 0
3 years ago
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