Answer:
sec
Explanation:
Consider the down direction as negative and upward direction as positive.
= mass of the bullet = 0.00728 kg
= mass of the wooden block = 2.75 kg
= velocity of the bullet before striking the block = 641 ms⁻¹
= velocity of the wooden block before collision
= velocity of the wooden block + bullet after collision = V
Using conservation of momentum
ms⁻¹
Consider the motion of the wooden block in free fall after being dropped:
= Initial velocity of the wooden block = 0 ms⁻¹
= acceleration of the wooden block = - 9.8 ms⁻²
= time of travel
= Final velocity of the wooden block = - 0.85 ms⁻¹
One the basis of above set of data , we can use the kinematics equation
sec
Answer:
distance and time
Explanation: the farther you go and how much time it will take you
Answer:
=
Explanation:
Given:
For the first solenoid
Number of turns, n₁ = 1200 turns/m
Current, I₁ = 2.5 A
Paramagnetic material temperature, T₁ = 320 K
Now for the second solenoid
Number of turns, n₂ = 1000 turns/m
Current, I₂ = 0.85 A
Paramagnetic material temperature = T₂
The magnetic flux (B) is given as
where,
c = curie's constant
μ₀ = arithmetic constant
also it is given that the magnetization in both the cases are same
therefore the magnetic flux will also be equal
thus,
=
or
=
or
=
or
=
or
=
or
=
Specific heat capacity= m c Δ t
= 20 * 0.11* (75-25)
= 20* 0.11* 50
= 110 calories.