Answer:
Explanation:
Given:
The accelerated energy, U = 1.25 MeV = 1.25 × 10⁶ eV
we know,
1 eV = 1.6 × 10⁻¹⁹ J
thus,
1.25 eV = (1.6 × 10⁻¹⁹) × (1.25) J = 2 × 10⁻¹³ J
Now, Applying the law of conservation of energy, the energy due to acceleration will be equal to the kinetic energy
mathematically,
K.E = U
where,
m = mass of the particle = 1.67 × 10⁻²⁷ kg
v = velocity of the particle
on substituting the values we get
or
or
or
Answer:
It will take 60 hours to pass your area
Explanation:
From the question we are told that
The the distance of wispy cirrus clouds is
The slope is given as
The speed is
Since the slope is 1:300 which indicates the change in the distance of the wispy cirrus clouds overhead to the distance of the warm front
Now if
1 km → 300 km
Then
→ x km
Cross multiplying and making x the subject
Velocity is mathematically denoted as
Now making time the subject
Now substituting values we have
Answer:
The final velocity is
Explanation:
From the question we are told that
The mass of the child is
The initial speed of the child is
The mass of the wagon is
The initial speed of the wagon is
The mass of the ball is
The initial speed off the ball is
Generally the initial speed of the system (i.e the child , wagon , ball) is
Generally from the law of linear momentum conservation
Here is the momentum of the system before the ball is dropped which is mathematically represented as
=>
=>
and
is the momentum of the system after the ball is dropped which is mathematically represented as
=>
So
=>