Answer:
we will calculate the pressure in pascals:
The units of pascal are Newtons / m²
Since we are given the force in newtons but we are given the area in cm² , we will convert 1 cm² to 1 m²
we know that 1 cm² = (1 / 10000) m²
Now, plugging these values in the equation for pressure:
Pressure = Force (N) / Area (m²)
Pressure = 450 / (1 / 10000)
Pressure = 450 * 10,000
Pressure = 4,500,000 pa
Therefore, the stilleto shoe is applying a pressure of 4.5 million pascals on the floor
We can convert it to some other units from this information
This much Pressure will be equal to:
4,500 kPa (Kilo pascals)
4.5 MPa (mega pascals)
Answer:
The answer to your question is A. Ionic
Explanation:
There are 3 kinds of bonds in chemistry
a) Ionic bonds are the bonds between a metal and a nonmetal. Metals lost their electrons and nonmetals gain them. These bonds are the strongest so the melting and boiling points are the highest of all.
b) Covalent bonds are bonds between two nonmetals. The elements share electrons so these bonds are not as stronger as Ionic bonds, the melting and boiling points are high.
c) Metallic bonds are among metals and have high melting and boiling points.
Answer:
B) mutagens
Explanation:
Mutagens are substances that causes mutation. Mutation involves alteration of the genetic materials of an organism.
Substances such as ultra-violet radiation, x-rays, nitrous acid, viruses, fungal-infections e.t.c leads to the physical, chemical and biological alteration of genetic sequences to produce a mutant. A mutant is an organism whose genetic sequence has been altered.
Note: Pathogens are disease causing organisms. Vectors are carriers of pathogens.
Im pretty sure the answer would be 2. Bc that’s how many is shared between O2
Wavelength of the light is 2.9 × 10⁻⁷ m.
<u>Explanation:</u>
Planck - Einstein equation shows the relationship between the energy of a photon and its frequency, and they are directly proportional to each other and it is given by the equation as E = hν,
where E is the energy of the photon
h is the Planck's constant = 6.626 × 10⁻³⁴ J s
ν is the frequency
From the above equation, we can find the frequency by rearranging the equation as,
ν = =
Now the frequency and the wavelength are in inverse relationship with each other.
ν × λ = c
It can be rearranged to get λ as,
λ = c / ν
=
So wavelength is 2.9 × 10⁻⁷ m.