Answer:
The current pass through the coil is 6.25 A
Explanation:
Given that,
Diameter = 25 cm
Magnetic field = 1.0 mT
Number of turns = 100
We need to calculate the current
Using the formula of magnetic field
Where, N = number of turns
r = radius
I = current
Put the value into the formula
Hence, The current passes through the coil is 6.25 A
<span>Homeostasis maintains internal balance of the cell.-- Things like shiver if cold sweating if hot to maintain internally </span>
Answer: 2m/s
Explanation:
V avg = Displacement / time
Displacement is 8
Time is 4
V avg = 2
Answer:
the third one is incorrect
Explanation:
10 x 10³= 10^1 x 10^3 = 10^4
Answer: 4.77m/s
Explanation:
According to the law of conservation of momentum which states that the sum total of momentum of bodies before collision is equal to the sum of their momentum after collision. Note that the two bodies will move at a common velocity after colliding.
Let m1 and m2 be the mass of the first and second railroad cars
u1 and u2 be the velocities of the railroad cars
v be the common velocity
Using the formula
m1u1 + m2u2 = (m1 +m2)
m1 = 1.20×10⁴kg
m2 = 1.20×10⁴kg (body of same mass)
u1 = 7.70m/s
u2 = 1.84m/s
v = ?
(1.20×10⁴×7.7) + (1.20×10⁴×1.84) = (1.20×10⁴ + 1.20× 10⁴)v
9.24×10⁴ + 2.21×10⁴ = 2.4×10⁴v
11.45×10⁴ = 2.4×10⁴v
v = 11.45×10⁴/2.4×10⁴
v = 4.77m/s
The velocity of the cars after collision will be 4.77m/s
