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Dahasolnce [82]
3 years ago
13

I need help on this question

Physics
2 answers:
Bess [88]3 years ago
5 0
The answer is Proton!

The proton is always the one with the plus sign.

The electron is the one with the negative sign.

The neutron is the one with no signs and the one that is close to the proton.
polet [3.4K]3 years ago
5 0
A proton bc of the plus sign
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An object 10mm in height is located 20cm from a crown glass spherical surface whose power is +10.00DS. Locate the image
Tasya [4]

The image is present at 20cm from the crown glass spherical surface.

To find the answer, we need to know about the lens formula.

<h3>What's the lens formula?</h3>
  • It's (1/V)-(1/U)= (1/f)
  • V= image distance from the lens, U= object distance, f= focal length of the lens

<h3>What's the image distance, if object is present at 20cm from crown glass of power 10DS?</h3>
  • Focal length (f)= 1/ power = 1/10 = 0.1 m
  • U= -20cm = -0.2m (-ve sign due to sign convection)
  • (1/V)-(-1/0.2)= (1/0.1)

=> (1/V)+5=10

=> 1/V= 5

=> V=0.2m = 20cm

Thus, we can conclude that the image is present at 20cm.

Learn more about the lens formula here:

brainly.com/question/2098689

#SPJ1

7 0
2 years ago
The key difference between the binomial and hypergeometric distribution is that
Ivenika [448]

Explanation:

Both distributions describe the number of times an event occurs in a givn number of trials. In the binomial distribution, the probability is the same for each trial. While in the hypergeometric distribution, each trial changes the probability of each subsequent trial, since there is no replacement.

5 0
3 years ago
A speed skater goes around a turn with a 31 m radius. The skater has a speed of 14 m/s and experiences a centripetal force of 46
dybincka [34]

Answer:

Mass of the skater, m = 72.75 kg

Explanation:

It is given that,

Radius of the circular path, r = 31 m

Speed of the skater, v = 14 m/s

Centripetal force, F = 460 N

We need to find the mass of the skater. It can be determined using the formula of centripetal force. It is given by :

F=\dfrac{mv^2}{r}

m=\dfrac{Fr}{v^2}

m=\dfrac{460\ N\times 31\ m}{(14\ m/s)^2}

m = 72.75 kg

So, the mass of the skater is 72.75 kg. Hence, this is the required solution.

4 0
4 years ago
Please help on this one?
lisov135 [29]

Answer:

The current in a resistor decreases by a factor of 4.

Explanation:

I = \frac{E}{R}

Where (I) is the current, (E) is the voltage and (R) is the resistance.

Decreasing the voltage by 4 gives;

I = 0.25\frac{E}{R}

Since you have multiplied \frac{E}{R} by 0.25,

You have to multiply I by 0.25 so the current decreases by a factor of 4.

3 0
3 years ago
Sum it up a cornell doodle notes
Pie
I do not understand?
7 0
3 years ago
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