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3 years ago

Who expressed particles by wave equations?

Physics

1 answer:

ehidna [41]3 years ago

7 0

I believe it was famous quantum physicist Erwin Schrödinger

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A street light is at the top of a 13.0 ft. tall pole. A man 6.3 ft tall walks away from the pole with a speed of 3.5 feet/sec al

amm1812

Answer:

$\dfrac{dL}{dt}=5.82 \ ft/s$

Explanation:

given,

street light height = 13 ft

man height = 6.3 ft

speed of the man = 3.5 ft/sec

$\dfrac{H}{L} = \dfrac{h}{l}$

$\dfrac{H}{L} = \dfrac{h}{L-x}$

$\dfrac{L}{H} = \dfrac{L-x}{h}$

hL = H(L-x)

hL = HL-Hx

$L = \dfrac{Hx}{H-h}$

$L = \dfrac{13x}{13-6.3}$

L = 1.94 x

$\dfrac{dL}{dt}=\dfrac{dL}{dx}\dfrac{dx}{dt}$

$\dfrac{dL}{dt}=1.94\times 3$

$\dfrac{dL}{dt}=5.82 \ ft/s$

7 0

3 years ago

Estimate how fast your hair grows, in units of m/s, assuming it takes 30 days for your hair to grow 1 inch. note that 1 inch =2.

VashaNatasha [74]

Answer:

1. 9.8 x 10^-7 cm/s

2. 50970 L

Explanation:

time, t = 30 days = 30 x 24 x 60 x 60 seconds = 2592000 seconds

length of hair, d = 1 inch = 2.54 cm

rate of growth = length of hair grows per second = 2.54 / 2592000

= 9.8 x 10^-7 cm/s

Thus, the grown rate of hair is 9.8 x 10^-7 cm/s.

2. length of the pool, l = 15 feet

width of the pool, w = 15 feet

height of pool, h = 8 feet

Volume of the pool, V = length x width x height

V = 15 x 15 x 8 = 1800 ft^3

To convert ft^3 into m^3 , we use

1 ft = 0.3048 m

so, 1 ft^3 = (0.3048)^3 m^3 = 0.0283 m^3

So, 1800 ft^3 = 1800 x 0.0283 = 50.97 m^3

now, 1 m^3 = 1000 L

So, 50.97 m^3 = 50.97 x 1000 L = 50970 L

3 0

3 years ago

Simplify completely: -3(4-9)+6-2(-8+5)

Elis [28]

Answer:

Explanation:

-3(4-9)+6-2(-8+5)

-12+27+6+18-10

5 0

3 years ago

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PLZZZ HELP 20PTS!!!!!!!

True [87]

Seafloor spreading is when the sea floor spreads apart. This occurs at DivergentBoundaries. At which type of boundary is seafloor destroyed? The seafloor isdestroyed at a COnvergent Boundary.

5 0

4 years ago

An isotope is a version of the same element that differs in the composition of the A) atom. B) nucleus. C) particle. Eliminate D

crimeas [40]

The correct answer is B because isotopes have different numbers of neutrons, and neutrons are located in the nucleus

Hope this helps

5 0

3 years ago

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