Answer:
Option B. 1,100 Earth diameters
Solution:
Angular position of steroid, (given)
To calculate the distance of asteroid, we use parallax method given as:
(1)
where,
From the relation:
l =
we get:
distance(d) or R =
distance(d) or R =
d =
distance, d =
Comparing it with Earth's diameter:
d =
Since, the value is close to 1,100 Earth diameters, therefore, option B is the right answer.
The cell probably needs protien and minerals (or vitamins too)
This is a question volumetric flow rate.
In 1 second, water rises with 0.4 in.
Additionally,
Volume filled in 1 second = A*0.4, A = surface area of the circular cylinder.
Where,
A = πR^2 = π*3^2 = 9π in^2
Therefore,
Volumetric flow rate = 9π*0.4 = 11.31 in^3/s
In terms of liters/s,
1 in^3 = 0.0163871 litres
Then,
11.31 in^3/s = 11.31*0.0163871 ≈ 0.19 l/s
Answer:
Volume of the wood = 120.615 cm3
Density of the wood = 0.457 g/cm3
Explanation:
By definition, density is the mass of a substance per unit volume and its units are kg/m3, g/l etc.
Volume of a cuboid = length * breadth * height
Length = 8.5 cm
Breadth = 3.3 cm
Height = 4.3 cm
Volume of the wood = 8.5 * 3.3 * 4.3
= 120.615 cm3
Mass of the wood = 55.120 g
Density = mass/volume
= 55.120/120.615
= 0.457 g/cm3
= 457 kg/m3
Use the law of conservation of charge: charge is always conserved. Here the system is the two balls, then the total initial charge of the two balls is the same of the total final charge of the two balls, which is +3.9 uC + 16.4 uC = +20.3uC.
When the balls are in contact, they behave as one alone piece and the total charge is evenly distributed among the whole surface. Given that the two balls are identical (same shape and same size) every ball support half of the charge.
Then, when the two balls are separated again each will have (+20.3 / 2) uC = 10.15 uC