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Questions (12)
a worker pushes a 7kg shipping box along a roller track. assume friction is small enough to be ignored because of the rollers.
1 answer
1,868 views
A kickoff sends a football with an initial velocity of 25 m/s at an angle of 50 degrees above the horizontal.
a) find the x and y
7 answers
12,159 views
1. The points L(4, 0),M(10, 0), and N(7, 5) form Triangle LMN. What is the sum of the slopes of the three sides of the triangle?
1 answer
517 views
f(x)=x/(x+2) and g(x)=4x-2
(A.) Find f of g(1). Is the solution "1/2" correct? (B.) Find g of f of f(2). Is the solution "-6/5"
1 answer
341 views
Let f(x)=3x and let g(x)=x-2
Find g of g(5) Is the solution "1" correct?
1 answer
329 views
For the function f(x)= 3x-8 / x+5, find:
a. f(0) = -8/5 b. f(-1) = -11/4 Correct?
1 answer
344 views
For the function f(x)=3x^2-8x find:
a. f(2) = -4 b. f(-3) = 51 Right?
5 answers
1,136 views
Under the correct conditions, the element molybdenum emits X-rays with a characteristic wavelength of 0.711A (7.11*10^-11m).
3 answers
1,031 views
In which orbital does an electron in a phosphorus atom experience the greatest effective nuclear charge?
a. 1s b. 2s c. 2p d. 3s
6 answers
11,023 views
A tin atom has 50 electrons. Electrons in which sublevel of this atom would experience the lowest effective nuclear charge?
a. 1s
3 answers
1,448 views
In an atom, an electron in which of these sublevels can absorb a photon of energy but cannot emit one?
a. 3s b. 2s c. 3p d. 1s e.
2 answers
443 views
Does anyone know who the burgandians? Did they overthrow the middle-aged (Medieval) monarchy? If not, then who did?
Who were the
0 answers
572 views
Answers (7)
thank you so much!!!!!
Yeah. 51, like I said, right?
Cyn.. That can't be right. Try it on a calculator..
Oh, yes that's right. Mass of electron= 9.11*10^-31kg. Therefore v=1.02*10^7m/s
1s, right?
That makes sense, thank you!
Oh, ok. So 5p?
