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Readme [11.4K]
3 years ago
6

Teeth are an example of which type of simple machine? lever wedge inclined plane pulley

Physics
2 answers:
andreev551 [17]3 years ago
3 0

Answer: Teeth is an example of a wedge.

Explanation :

the machines that make our work easier are called simple machines. Some machines can be compound because they are a combination of more than two simple machines. For example, stapler.

Teeth are an example of a wedge. It is a simple machine which consists of two inclined planes. It is used to split apart objects.  

The mechanical advantage of a wedge is more than 1.

So, the correct option is (b) " Wedge".

Murrr4er [49]3 years ago
3 0

Did the quiz and test it’s b

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A 5kg ball is on top of the school building at a height of 40m above the ground.
mojhsa [17]

Answer:

A-Caclcuate the potential energy of the ball at that height

Explanation:

(a). Mass of the Body = 10 kg.

Height = 10 m.

Acceleration due to gravity = 9.8 m/s².

Using the Formula,Potential Energy = mgh

= 10 × 9.8 × 10 = 980 J.

(b). Now, By the law of the conservation of the Energy, Total amount of the energy of the system remains constant.

∴ Kinetic Energy before the body reaches the ground is equal to the Potential Energy at the height of 10 m.

∴ Kinetic Energy = 980 J.

(c). Kinetic Energy = 980 J.

Mass of the ball = 10 kg.

∵ K.E. = 1/2 × mv²

∴ 980 = 1/2 × 10 × v²

∴ v² = 980/5

⇒ v² = 196

∴ v = 14 m/s.

3 0
2 years ago
The form of energy given off by the vibrating strings of the violin is? A. Electrical Energy B. Potential Energy C. Radiant Ener
S_A_V [24]

Answer:

D . Sound energy

Explanation:

When the strings of a violin vibrate it produces sound which is sound energy. Due to the vibration of the strings the air present near the strings also vibrate in resonance with the strings. This compreesion and decompression's produced in the air is nothing but the sound. So the form of energy given off by the vibrating strings of the violin is Sound energy.

6 0
3 years ago
If there are oncoming cars to the left of you and a child on a bike to the right, what is the correct action to take
tankabanditka [31]

Answer:

Give the child a lot of room to your side, which may mean moving closer to the oncoming vehicles.

Explanation:

I majored in Physics.

3 0
3 years ago
In the nucleus ______________<br> tell cells what to do and how to change.
anyanavicka [17]

Answer:

i believe it is dna

Explanation:

if i remember correctly if the dna tells the cell what to do and how to do it

7 0
3 years ago
19. Determine the final state and its temperature when 150.0 kJ of heat are added to 50.0 g of water at 20 ºC. (Specific heat of
8090 [49]

The amount of energy to reach the boiling point is 50*80*4.184 J=16,736J. To pass the boiling point, 40.79*\frac{50}{18.02}kJ=113,180J are necessary (18.02 is the molar mass of water). This means that 150kJ-113.180kJ-16.736kJ=20,084J are left. This allows the steam to heat another \frac{20,084}{50*1.99}=201.8^{\circ}C. Therefore, it ends as steam at temperature 100^{\circ}C+201.8^{\circ}C=301.8^{\circ}C

6 0
3 years ago
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