Answer:
a= - 1.2 m/s²
Direction of a : in the negative x- direction
Explanation:
Because the ball moves with uniformly accelerated movement we apply the following formula:
vf²=v₀²+2*a*d Formula (1)
Where:
d:displacement in meters (m)
v₀: initial velocity in m/s
vf: final velocity in m/s
a: acceleration in m/s²
Known data
v₀ = 9.0 m/s
vf= 3.00 m/s
d = 30.0 m.
Problem development
We replace data in the formula (1) to calculate acceleration :
vf²=v₀²+2*a*d
(3)²= (9)² + (2* 30)*a
9=81+(60)*a
9-81=(60)*a
-72= (60)*a
a= -72/60
a= - 1.2 m/s²
Direction of a : in the negative x- direction
Answer:
average emf induced in the coil is 1.57 x
V
Explanation:
Given data
n = 10 turns per centimeter = 1000 m^-1
N = 5
cross-sectional area A = 5.0 cm2 = 5.0 x 10^-4 m²
current = 0.25 A
to find out
average emf induced in the coil
solution
we will find emf by the given formula
emf = - (μ×N×n×A×ΔI ) / t ..................1
here
μ = 4π x 10^-7 and
N = 10
n = 1000
A = 5.0 x 10^-4
ΔI = 0.25
t = 0.050
put all value in equation 1
emf = - (μ×N×n×A×ΔI ) / t
emf = - (4π x 10^-7 ×5 ×1000× 5.0 x 10^-4 × 0.25 ) / 0.050
emf = 1.57 x
V
average emf induced in the coil is 1.57 x
V
The ovum, plural ovae (latin) produced in the female bodies of mammals ovaries are the female sex cells.
The sperm are the male sex cells. Produced in the testes.
When sperm and ovum meet, there is a chance that they could join together and thus start a new life. Process is called fertilisation