Linear momentum is conserved, so the speed of the block after
the bullet has passed through it and continued on its way is
(383 · mass of the bullet) divided by (mass of the block)
Inertia resists change in its motion( or remains in its existing state of rest) unless that state is changed by an external force.
Answer:
Magnetic field, B = 1.9232 T
Explanation:
Given data:
Value of the charge, Q = 0.026 C
Speed, V = 443.592 m/s
Force experienced, F = 22.182
Now,
the Force (F) experienced by a charge in a magnetic field is given as:
F = QVBsinθ
where,
B is the magnetic field
Angle between the magnetic field and the velocity.
since, the velocity is in horizontal direction and the magnetic field is downwards. Therefore, the angle θ = 90°
thus, we have
22.182 = 0.026 × 443.592 × B × sin90°
or
B = 1.9232 T
Given :
An object 50 cm high is placed 1 m in front of a converging lens whose focal length is 1.5 m.
To Find :
the image height (in cm).
Solution :
By lens formula :
Here, u = - 100 cm
f = 150 cm
Now, magnification is given by :
Therefore, the image height is 3 m or 300 cm.
Answer:
(B) Energy cannot be destroyed.
Explanation:
The total amount of energy within a system cannot change. Energy in one form can only be transformed into another form. This implies energy cannot be "destroyed." (neither can it be created from nothing).