Answer:
1/3 kg/m3
Step-by-step explanation:
density= mass/volume
mass=40 kg
volume=5m×8m×3m=120m³
density=40kg/120m³=1/3 kg/m³
We have to calculate the radius
Radius: Distance between the points (8,2) and (3,7)
Given two points (x₁,y₁) and (x₂,y₂) the distance between these points will be:
Distance=√((x₂-x₁)²+(y₂-y₁)²)
In this case:
Distance=radius=√((3-8)²+(7-2)²)=√(25+25)=√50
Area of a circle=πr²
Data:
r=√50
Therefore:
Area of this circle=π((√50) u)²=50π u²≈157.1 u².
Answer: the area would be: 50π u² or 157.08 u²
Answer:
Distance travelled in 1•3/4hrs=29 km
THEREFORE,IN 1 HR DISTANCE TRAVELLED =29÷(1•3/4)
=29÷7/4.
=29*4/7
=116/7KM
=16.59KM
Answer:
Please check the explanation.
Step-by-step explanation:
Given that
|v|=38
Ф = 120°
<u>Finding the horizontal component</u>
The horizontal component can be obtained using the formula
Vx = |v| cos Ф
= 38 cos 120°
= 38 (-0.5)
= -19
Thus, the horizontal component is:
Vx = -19
<u>Finding the vertical component</u>
The vertical component can be obtained using the formula
Vy = |v| sin Ф
= 38 sin 120°
= 38 (0.86)
= 32.68
Thus, the vertical component is:
Vy = -19
- A vector 'v' with magnitude |v| and direction Ф can be written as:
v = |v| cos Ф i + |v| sin Ф j
As
|v|=38
Ф = 120°
Thus, the vector is
v = 38 cos 120° i + 38 sin 120° j
or
v = -19 i + 32.68 j
Answer:
x^2+2x-15
Step-by-step explanation: