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zalisa [80]
3 years ago
10

Last year, a banquet hall charged $30 per person, and 60 people attended

Mathematics
1 answer:
ohaa [14]3 years ago
6 0
So what’s the question?
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In a simplified model of a hydrogen atom, the electron moves around the proton nucleus in a circular orbit of radius 0.53 × 10−1
tresset_1 [31]
For the answer to the question above,
 <span>a) Use F = k * q1 * q2 / d² 
where k = 8.99e9 N·m²/C² 
and q1 = -1.602e-19 C (electron) 
and q2 = 1.602e-19 C (proton) 
and d = distance between point charges = 0.53e-10 m 
The negative result indicates "attraction". 

b) Here, just use F = ma 
where F was found above, and 
m = mass of electron = 9.11e-31kg, if memory serves 
a = radial acceleration 

c) Now use a = v² / r 
where a was found above 
and r was given 

d) period T = 2π / ω = 2πr / v 
where v was found above 
and r was given </span>
7 0
3 years ago
What is 36/40 as a percentage and can you show me how to work it out as well please thanks x
cricket20 [7]
36/40 = 90%
<span>
work
36/40= 0.9
0.9x100 =90
</span>
6 0
3 years ago
Read 2 more answers
Selecciona la opción que relaciona con las jergas juveniles
Blizzard [7]

Answer: es la c) 1d,2a,3b,4c

Step-by-step explanation:

5 0
2 years ago
Stephanie just redecorated her bedroom. She wants to paint but needa to know the surface area of the door to see if she has enou
zhuklara [117]

Answer:

The surface area of door is 33 680 cm².

Step-by-step explanation:

Given that the surface area of a cuboid which is the 3D of rectangle is :

s.a = 2(l \times w) + 2(l \times h) + 2(w \times h)

let \: l = 80 \\ let \: w = 3 \\ let \: h = 200

s.a = 2(80 \times 3) + 2(80 \times 200) + 2(3 \times 200)

s.a = 2(240) + 2(16000) + 2(600)

s.a = 480 + 32000 + 1200

s.a = 33680 \:  {cm}^{2}

8 0
3 years ago
Solve for the indicated variable. Include all of your work in your answer. Submit your solution. P = 3r + 2s; for s.
madam [21]
<h3>Given</h3>

P = 3r + 2s

<h3>Find</h3>

the corresponding equation for s

<h3>Solution</h3>

First of all, look at how this is evaluated in terms of what happens to a value for s.

  1. s is multiplied by 2
  2. 3r is added to that product

To solve for s, you undo these operations in reverse order. The "undo" for addition is adding the opposite. The "undo" for multiplication is division (or multiplication by the reciprocal).

... P = 3r + 2s . . . . . . starting equation

... P - 3r = 2s . . . . . . -3r is added to both sides to undo addition of 3r

... (P -3r)/2 = s . . . . . both sides are divided by 2 to undo the multiplication

Note that the division is of everything on both sides of the equation. That is why we need to add parentheses around the expression that was on the left—so the whole thing gets divided by 2.

Your solution is ...

... s = (P - 3r)/2

3 0
3 years ago
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