Answer:
54 g
Explanation:
We'll begin by calculating the density of X. This can be obtained as follow:
Mass of X = 54 g
Length (L) = 9 cm
Breadth (B) = 2 cm
Height (H) = 1 cm
Volume of X = L × B × H
Volume of X = 9 × 2 × 1
Volume of X = 18 cm³
Density of X =?
Density = mass /volume
Density of X = 54/18
Density of X = 3 g/cm³
Finally, we shall determine the mass of Y as follow:
Length (L) = 3 cm
Breadth (B) = 3 cm
Height (H) = 2 cm
Volume of Y = L × B × H
Volume of Y = 3 × 3 × 2
Volume of Y = 18 cm³
Density of Y = Density of X (since they are made of the same material)
Density of X = 3 g/cm³
Density of Y = Density of X = 3 g/cm³
Mass of Y =.?
Density = mass /volume
3 = mass of Y /18
Cross multiply
Mass of Y = 3 × 18
Mass of Y = 54 g
A cycle in which.... rocks are formed due to deposition of soil particles under high pressure and temperature in the Earth's crust ... these rocks further breakdown due to weathering,denudation,erosion and such causes by which the loose particles form soils... soil under pressure and temperature... again form rocks.. so this is a continuous cycle...
hope it helps you
Answer:
1. frequency = 7.39 * 10¹⁴ Hz
2. wavelength = 1.44 * 10⁸ nm
Explanation:
The speed, frequency and wavelength of waves are related by the formula;
speed = wavelength * frequency
1. wavelength of light = 406 nm = 4.06 * 10⁻⁷ m
speed of light is a constant = 3.0 * 10⁸ m/s
From the formula above, frequency = speed / wavelength
therefore, frequency = (3.0 * 10⁸ m/s) / 4.06 * 10⁻⁷ m
frequency = 7.39 * 10¹⁴ Hz
2. From the equation above, wavelength = speed/frequency
speed of radiation = 3.0 * 10⁸ m/s
frequency = 2.09 * 10⁹ Hz or 2.09 * 10⁹ s⁻¹
therefore, wavelength = (3.0 * 10⁸ m/s) / 2.09 * 10⁹ s⁻¹
wavelength = 1.44 * 10⁸ nm
These atomic properties help describe the macroscopic properties of compounds. For example, smaller covalent compounds that are held together by weaker bonds are frequently soft and malleable. ... Ionic compounds, though composed of strong bonding interactions, tend to form brittle crystalline lattices.
Answer:
1728 kg is the mass of air for the room
Explanation:
An exercise of unit conversion.
The volume of the room will be:
24 m . 15 m . 4m = 1440 m³
Density of air is 1.20 g/L which means that in 1L, there is contained 1.20 g of air.
1L = 1dm³
1m³ = 1000 dm³
1440 m³ . 1000 = 1440000 dm³ ⇒ 1.44x10⁶ L
Density of air = 1.20 g/L = mass of air / volume of air
1.20 g/L = mass of air / 1.44x10⁶ L
1.20 g/L . 1.44x10⁶ L = mass of air → 1728000 grams
1 g = 1x10⁻³ kg
1728000 g / 1000 = 1728 kg
