Answer:
R' = 4R
The resistance will become 4 times the initial value.
Explanation:
The resistance of a wire at room temperature, is given by the following formula:
R = ρL/A ----------- equation 1
where,
R = Resistance of wire
ρ = resistivity of the material
L = Length of wire
A = Cross-sectional area of wire
Now, if the length (L) is multiplied by 4, then resistance will become:
R' = ρ(4L)/A
R' = 4 (ρL/A)
using equation 1:
<u>R' = 4R</u>
<u>The resistance will become 4 times the initial value.</u>
Sally wins the race by 0.03 min
Explanation:
To find time = distance / velocity
Sally;
1 mile / 12 mph
= ¹/12 hrs * 60
= 5 min
Ramona;
³/4 mile ÷ 11 mph + ¹/4 mile ÷ 16 mph
= ³/44 hrs + ¹/64 hrs
= 4.09 min + 0.94 min
= 5.03 min
The answer is 25.37 hope this helps
Answer: To help eliminate subjectivity
Explanation:
Edgenuity 2020
The tension of cold icebergs rubbing creates heat and it can also be how large the quantity is
