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Cerrena [4.2K]
4 years ago
11

Which type of reaction is shown in this energy diagram?

Physics
2 answers:
valentinak56 [21]4 years ago
5 0

Answer:

Option C

Explanation:

The graph shows endothermic reaction because the reactants are lower in energy and the products are higher is energy. Endothermic reactions absorb energy having products with higher energy.

Ann [662]4 years ago
3 0

Answer:

C

Explanation:

In an endothermic reaction, the energy-time graph shows reactants are at a lower energy level than the products.

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What is the difference between charging by contact and charging by induction in terms of electron transfer.
Veronika [31]

Answer:

the main difference between charging by contact and charging by induction is that in the first case, the two objects are touching, while in the second case, the two objects do not touch

Explanation:

There are three methods of charging an object:

- Charging by friction: this is done by rubbing an object against another object. An example is when a plastic rod is rubbed with a wool cloth. When this is done, electrons are transferred from the wool to the rod, so both objects remain charged at the end of the process

- Charging by contact: this is done by putting in contact a charged object with a neutral, conducting object. In this case, the charges are transferred from the charged object to the neutral object; at the end of the process, the neutral object will also have a net electric charge, so it will be also charged.

- Charging by induction: in this case, we take a charged object, and a neutral object, and we place the two objects close to each other, but without touching. Let's assume that the charged object is negatively charged: in this case, the positive charges in the neutral object are attracted towards the negative charges of the charged object, while the negative charges of the neutral object are repelled away. As a result, the positive and negative charges in the neutral object split apart. If the object is connected to the ground, then negative charges move away, so the neutral object will remain positively charged.

Therefore, the main difference between charging by contact and charging by induction is that in the first case, the two objects are touching, while in the second case, the two objects do not touch.

5 0
3 years ago
EJ is taking his little sister, Ebony, on her first carousel ride. His mass is 75.0 kg, and her mass is 10.0 kg. They ride the s
almond37 [142]

You have to find interia using I=mr^2.  

m=75+10  

radius = 11  

Then you have to substitute in first formula above to find the angular speed.

14020=(75+10)x v x 11  

v= 14020/ (85x11) = 15m/s

To find linear speed, use V=wr.

Equation: V = 11*1.363 = 15m/s = 33.6mi/hr

Hope this helps! :)

6 0
4 years ago
Jessie draws a ray diagram to show how an image of a candle is produced by a concave mirror when the candle is placed in front o
irina1246 [14]
There are two rules of reflection for the concave mirror:
1)<span>Any incident ray traveling parallel to the principal axis on the way to the mirror will pass through the focal point upon reflection.
2)</span><span>Any incident ray passing through the focal point on the way to the mirror will travel parallel to the principal axis upon reflection.
Also, keep in that for concave mirror center of curvature is 2f.
Using these two rules we can construct the image. 
You should always use these two "special" rays, I will mark then 1 and 2 on the picture.
From the picture, we can see that if you place the object between the focus and vertex you get the virtual image.
The answer is: object should be between the focal point and the vertex</span>

8 0
3 years ago
Read 2 more answers
A feather of mass 0.001 kg falls from a height of 2 m. Under realistic conditions, it experiences air resistance. Based on what
snow_tiger [21]

As per initial given conditions first we will find the initial potential energy of the feather

U = mgh

m = 0.001 kg

g = 9.8 m/s^2

h = 2m

U = (0.001kg)(9.8 m/s^2)(2m)

U = 0.0196 J

now we know that few amount of its initial energy is lost in form of frictional energy loss

so remaining energy will be less than the initial potential energy

So final answer would be

<u><em>A. KE < 0.0196 J</em></u>

4 0
3 years ago
What is the net force acting on a 50-kg object that accelerates at a rate of +3.5 m/s/s?
Nostrana [21]

Answer:

<h2>The answer is 175 N</h2>

Explanation:

The force acting on an object given it's mass and acceleration can be found by using the formula

force = mass × acceleration

From the question we have

force = 50 × 3.5

We have the final answer as

<h3>175 N</h3>

Hope this helps you

4 0
3 years ago
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