Answer:
Explanation:
magnetic filed, B = 0.65 T
initial diameter, d = 17.5 cm
final diameter, d' = 6.6 cm
time, t = 0.48 s
(a) According to Lenz's law, the direction of induced current is clockwise.
(b) Let e is the induced emf.
initial area, A = π r² = 3.14 x 0.0875 x 0.0875 = 0.024 m²
final area, A' = π r'² = 3.14 x 0.033 x 0.033 = 0.00342 m²
change in area, ΔA = A - A' = 0.024 - 0.00342 = 0.02058 m²
The magnitude of induced emf is given by
e = 0.65 x 0.02058 / 0.48
e = 0.028 V
(c) R = 2.5 ohm
i = e / R
i = 0.028 / 2.5
i = 0.011 A
The total metabolic energy used by each to complete the course is determined as 656.91 J.
<h3>
Kinetic energy of Jessie and Jaime</h3>
The kinetic energy of Jessie and Jaime is calculated as follows;
K.E = ¹/₂mv²
where;
- m is mass of Jaime
- v is speed
15 km/h = 4.17 m/s
5 km/h = 1.39 m/s
K.E = ¹/₂(68)(4.17)² + ¹/₂(68)(1.39)²
K.E = 656.91 J
Thus, the total metabolic energy used by each to complete the course is determined as 656.91 J.
Learn more about kinetic energy here: brainly.com/question/25959744
Question:
What line on a weather map indicates areas there the temperature is the same?
Answer:
The line that indicates where areas have the same temperature is called Isotherm Lines.
"Iso" means same, and "Thermal" means temperature.
-Brainly Answerer
Answer:
b
Explanation:
this is because inoder. for combustion or burning to take place oxygen must be available
In each case, (the pie in a low setting at one hour versus the pie in a high setting at thirty minutes) the amount of energy is the same. However, the amount of power is different. Since power is the amount of work put in certain amount of time, the power in the high setting is larger compared to the power in the low setting.
