Answer:
The wire length is 32 inches.
Explanation:
According to the question,
The pipe's length = 60 inches
The pipe's circumference = 4 inches
Now,
The wire wraps around the pipe for 8 complete turns.
Now, with 2πr = 4, we find that
r = 2/π
Thus,
The radius, r = 2/π
The wire's length can be calculated as,
Length = Number of turns x Circumference of the pipe
So, length of wire = 8 x 4 = 32 inches.
Consequently, the wire length is 32 inches.
Answer:
A) 5.1*10^10m B) 5.4*10^6m
Explanation:
Utilizing the formula for surface radiation P (energy per second in Watts) = emissivity constant * surface area * Stefan-Boltzmann constant * Temperature in Kelvin^4 *
2.7*10^31 = 1* 5.67*10^-8*A*11000^4
Rearranging to solve for A = 2.7*10^31 / (5.67*10^-8*1.46*10^16) = 0.3261*10^23m^2
Assuming the shape is spherical, the surface area is = 4πR^2 (radius of Rigel)
R = √(0.3261*10^23 / 4*π) = 5.1 * 10^10m
B) repeating the same calculation
2.1 *10^23 = 1*A*5.67*10^-8*10000^4 where A is the surface area of Procyon
Rearranging gives A = 2.1*10^23/(5.67*10^-8*10^16)
A = 0.37*10^15
Assuming the star is spherical;
A = 4πR^2 where R is Procyon's radius
R = √(0.37*10^15/4π) = 5.4*10^6m
Answer
Given data:
height of the dam = 15 m
effective area for water flow = 2.3 x 10⁻³ m²
Applying the principle of energy conservation:
v = 17.15 m/s
water discharge
Q = A V
Q = 2.3 x 10⁻³ x 17.15
Q = 0.039 m³/s
Explanation:
Efficiency can be expressed as the ratio of useful output to the total power consumed. 
The fan delivers 500W as useful output while wasting 300W. Thus, the overall power consumed equals 800W (500 + 300).
Answer:
Explanation:
The overall energy expenditure of the salmon, which corresponds to its swimming upstream effort, 
, is linked to its specific mechanical power. 
calculated per unit mass can be derived from the following equation:
As a result, the total energy utilized during the 22-day journey is 7.603 MJ
