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3 years ago

Which products might be developed based on van der waals forces

1 answer:

8 0

One of the amazing products that have been developed under Van Der Waals forces is the suction cup that is used as an ankle and is used by workers as a safety gear on cleaning or constructing high-rise buildings.
Like geckos, they can scamper up walls, scuttle along ceilings and hang upside down on polished glass surfaces.

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A cell is a system of parts that work together to carry out basic life processes. An animal is also a system of parts that work

blagie [28]

Nucleus is like the brain of the cell
Cell wall would be the skin
Cell membrane is the skeletal system
Mitochondria is the digestive system
I hope I’m right

4 0

3 years ago

Read 2 more answers

How many grams are in 0.990 mol of neon? mass in grams:

vodka [1.7K]

Explanation:

Multiply the given moles times the molar mass of neon, 20.180 g/mol (periodic table).

7 0

3 years ago

Read 2 more answers

Britta traveled 1250 km on her road trip and used 209 L of gasoline, filling her tank atan average of 1.14 euros per liter. Pier

icang [17]

Answer:

Britta paid more per kilometer driven

Explanation:

1) Britta:

Distance traveled: 1,250 Km

Gasoline used: 209 liter

Gasoline price: 1.23 euros / liter

Cost per km = total cost of gasoline / distance traveled

Cost per km = gasoline used × gasoline price / distance traveled

Cost per km = 209 liter × 1.14 (euro / liter) / 1,250 km = 0.19 euro / km

2) Pierce:

Distance traveled: 1,405 km

Gasoline used: 175 liter

Gasoline price = 1.23 euros / liter

Cost per km = 175 liter × 1.23 (euro / liter) / 1,405 km = 0.15 euro / km

3) Comparison:

0.19 > 0.15 ⇒ Britta paid more per kilometer driven

4 0

4 years ago

What is the fraction of the hydrogen atom's volume that is occupied by the nucleus? the bohr radius is 0.529×10−10m?

Arturiano [62]

Volume of a sphere = 4/3 x pi x r^3

When put a fraction of volume constant 4/3 x pi cancels out.

So only cube of radii remains.

Radius of proton = 10^-15 m (Fact; remember it)

Radius of total Hydrogen atom = 0.529 × 10^−10 m

Fraction of Volumes : R'^3/R^3 = (R/R)^3

Fraction = ((10^-15)/(0.529 × 10^−10m.))^3= (1/52900)^3 =

6.755 x 10^-15

6 0

3 years ago

The equation for photon energy, E, is E=hc/λ

Leni [432]

Answer:

The wavelength, λ, of a photon that has an energy of E = 3.92×10⁻¹⁹ J is 5.054*10⁻⁷ m

Explanation:

The wavelength is defined for every periodic wave, that is, for the type of wave that repeats itself with exactly the same shape every given interval of time. It is the distance between two points from which the wave repeats.

Radiation is the emission, propagation and transfer of energy in any medium in the form of electromagnetic waves or particles.

The energy carried by electromagnetic radiation travels by waves. This energy is transmitted grouped in small "quanta" of energy called photons. The energy of a photon is measured in Joules (J) and is

$E=\frac{h*c}{wavelength}$

Being:

E=3.92×10⁻¹⁹ J
h= 6.626×10⁻³⁴ J⋅s (Planck's constant)
c = 2.99×10⁸ m/s (the speed of light)
wavelength=?

and replacing:

$3.92*10^{-19}J =\frac{6.626*10^{-34}J.s*2.99*10^{8}\frac{m}{s} }{wavelength}$

you get:

$wavelength =\frac{6.626*10^{-34}J.s*2.99*10^{8}\frac{m}{s} }{3.92*10^{-19}J}$

wavelength= 5.054*10⁻⁷ m

The wavelength, λ, of a photon that has an energy of E = 3.92×10⁻¹⁹ J is 5.054*10⁻⁷ m

6 0

3 years ago