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777dan777 [17]
3 years ago
8

The formulas used to analyze the horizontal and vertical motion of projectiles launched at an angle involve the use of which fun

ction(s)?
Physics
2 answers:
dlinn [17]3 years ago
7 0
Sin/Cos if that's one of the answers.  you have to use trig because you must resolve into components.
White raven [17]3 years ago
4 0

<u>Answer</u>

Sine and Cosine

<u>Explanation</u>

For the vertical and the horizontal forces the component is zero. If the only the horizontal and the vertical forces are given and you want to find the force at a given angle, you calculate the component forces.

To find the component forces you apply the trigonometric functions sine and cosine.


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The maximum wavelength For photoelectric emissions in tungsten is 230 nm. What wavelength of light must be use in order for elec
notka56 [123]

Answer:

λ = 1.8 x 10⁻⁷ m = 180 nm

Explanation:

First we find the work function of tungsten by using the following formula:

∅ = hc/λmax

where,

∅ = work function = ?

h = Plank's Constant = 6.626 x 10⁻³⁴ J.s

c = speed of light = 3 x 10⁸ m/s

λmax = maximum wavelength for photoelectric emission = 230 nm

λmax = 2.3 x 10⁻⁷ m

Therefore,

∅ = (6.626 x 10⁻³⁴ J.s)(3 x 10⁸ m/s)/(2.3 x 10⁻⁷ m)

∅ = 8.64 x 10⁻¹⁹ J

Now we convert Kinetic Energy of electron into Joules:

K.E = (1.5 eV)(1.6 x 10⁻¹⁹ J/1 eV)

K.E = 2.4 x 10⁻¹⁹ J

Now, we use Einstein's Photoelectric Equation:

Energy of Photon = ∅ + K.E

Therefore,

Energy of Photon = 8.64 x 10⁻¹⁹ J + 2.4 x 10⁻¹⁹ J

Energy of Photon = 11.04 x 10⁻¹⁹ J

but,

Energy of Photon = hc/λ

where,

λ = wavelength of light = ?

Therefore,

11.04 x 10⁻¹⁹ J = (6.626 x 10⁻³⁴ J.s)(3 x 10⁸ m/s)/λ

λ = (6.626 x 10⁻³⁴ J.s)(3 x 10⁸ m/s)/(11.04 x 10⁻¹⁹ J)

<u>λ = 1.8 x 10⁻⁷ m = 180 nm</u>

5 0
3 years ago
The SI unit that is used to measure time is the
Sunny_sXe [5.5K]

Answer:second

Explanation:

4 0
3 years ago
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Ivenika [448]

ಠ_ಠ Hey, hang on.. you might've made a discovery. Nobody has tested it so how do we know? ಠ_ಠ

3 0
3 years ago
Read 2 more answers
1) Should I take vitamin D supplements in the winter?
iren2701 [21]
Yes you need the light or just go outside to get it from the sun
4 0
2 years ago
a gas has a volume of 8 liters at a temperature of 300 K the volume is then increased to 12 Liters what is the new temperature (
natali 33 [55]
300/8 = 37.5
37.5 x 12 = 450
New temp. = 450 K
Hope this helps!
6 0
3 years ago
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