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ryzh [129]
3 years ago
9

Evaluate for f(-4) F(x) =3x2 -5 +7

Physics
1 answer:
Eduardwww [97]3 years ago
7 0

Answer: -4f=8

Explanation:

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An electric current through neon gas produces several distinct wavelengths of visible light. What are the wavelengths (in nm) of
MA_775_DIABLO [31]

Answer:

Explanation:

If a be grating element

a = 1 x 10⁻² / 11000

= .0909 x 10⁻⁵

= 909 x 10⁻⁹ m

for first order maxima , the condition is

a sinθ = λ where λ is wavelength

909 x 10⁻⁹ sin 49.67 = λ₁

λ₁ = 692.95  nm .

λ₂ = 909 x 10⁻⁹ sin 50.65

= 702.91 nm

λ₃ = 909 x 10⁻⁹ sin 52.06

= 716.88 nm

λ₄ = 909 x 10⁻⁹ sin 52.89

= 724.90 nm

692.95  nm ,  702.91 nm  , 716.88 nm , 724.90 nm .

4 0
3 years ago
I need help ! if anyone answers this its worth 40 points please help !!
Sliva [168]
Double displacement...I think
3 0
3 years ago
What is the acceleration of a vehicle that goes from 70 m/s to a stop in 35 s?
belka [17]
U=70 , v= 0, t=35, a=?
v=u+at
0=70+a(35)
-70=35a
a=-2m/s^2
Decelerate 2ms^-2 or acceleration is -2ms^-2
7 0
3 years ago
23°C = ______ K<br> 23<br> 296<br> -250<br> 123
grigory [225]
TºC + 273 :

23 + 273 =  296 K

Answer B

hope this helps!
4 0
3 years ago
How many 90-W, 120-V light bulbs can be connected to a 20-A, 120-V circuit without tripping the circuit breaker? (Note: This des
spayn [35]

Answer:

26

Explanation:

Total power of the circuit

P = V × I = 120 × 20 = 2400 W

Power of each bulb = 90 W

Number of bulbs which work without tripping

N = power of circuit / power of each bulb

N = 2400 / 90

N = 26.66

Number of bulbs should be integer so the number of bulbs be 26.

8 0
3 years ago
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