Any vector can be written as components along positive X and positive Y axes.
So vector A can be written as , where is the angle between vector A and positive X axis
So vector A =
So components of vector B along X -axis =5 cm
along Y-axis = 8.667 cm
Answer:
<em>The density of rock = 3.37 g/cm³</em>
Explanation:
Density: Density can be defined as the ratio of the mass of a body to the volume. The S.I unit of density is kg/m³. It can be expressed mathematically as ,
D = M/V............................................... Equation 1
Where D = density of the body, M = mass of the body, V = volume of the body.
From Archimedes' principle, a body will displace a volume of water equal to its volume.
Therefore, Volume of the object = volume of water displaced
<em>Given: M = 300 g, V = volume of water displace = 89.0 cm³.</em>
<em>Substituting these values into equation 1</em>
<em>D = 300/89</em>
<em>D = 3.37 g/cm³</em>
<em>The density of rock = 3.37 g/cm³</em>
1) 4 m
Prefix "milli" (m) means . Therefore:
2)
Prefix "Tera" (T) means . Therefore:
3) 48.6 A
Prefix "deci" (d) means . Therefore:
4)
Prefix "micro" () means . Therefore:
5)
Prefix "giga" (G) means . Therefore:
Answer:
40000 N/m²
Explanation:
Applying,
P = F/A................... Equation 1
Where P = Pressure, F = Force, A = Area.
From the question,
The force(F) exerted by the person's foot is thesame as it's weight.
F = W = mg............ Equation 2
Where m = mass of the person, g = acceleration due to gravity.
Substitute equation 2 into equation 1
P = mg/A................ Equation 3
Given: m = 60 kg, g = 10 m/s², A = 150 cm² = (150/10000) m² = 0.015 m²
Substitute these values into equation 3
P = (60×10)/0.015
P = 600/0.015
P = 40000 N/m²
Answer is 1500 m/s
Wave speed = Frequency x wavelength
500.0 x 3.00 = 1500 m/s