Answer:
I = 2.48 10⁻² A
Explanation:
The magnetic field produced by a solenoid disproportionate to the density of turns and the current passing through the wire
B = μ₀ n I
Where μ₀ is the magnetic permeability that you are worth 4π 10⁻⁷ N/A²
Let's calculate the density of turns.
n = N / L
n = 5000 / 3.0
n = 1666.67
Let's reduce the field to SI units
B = 52 μT = 52 10⁻⁶ T
Let's calculate the current
I = B / μ₀ n
I = 52 10⁻⁶ / (4π 10⁻⁷ 1666.67)
I = 2.48 10⁻² A
Answer:
14.7 m/s
Explanation:
Since the motion of the ball is a uniformly accelerated motion, we can find the initial speed by using the following suvat equation:
where
s is the vertical displacement
u is the initial velocity
t is the time
a is the acceleration
In this problem, we have:
s = 0 (because at the end of the motion, the ball returns to its original position)
u = ?
is the acceleration of gravity (negative because it is downward)
is the total time of flight
Solving for u, we find the initial velocity of the ball:
Answer : The correct option is, (d) 90 mL
Explanation :
First we have to calculate the volume of an object.
As we know that,
Given:
Density of an object = 0.25 g/mL
Mass of an object = 10 g
Now put all the given values in the above formula, we get:
Thus, the volume of an object is 40 mL.
Now we have to calculate the height of the water in the graduated cylinder rise.
As we are given that:
The volume of water in graduated cylinder = 50 mL
The volume of an object = 40 mL
The height of the water in the graduated cylinder rise = Volume of water in graduated cylinder + Volume of an object
The height of the water in the graduated cylinder rise = 50 mL + 40 mL
The height of the water in the graduated cylinder rise = 90 mL
Therefore, the height of the water in the graduated cylinder rise will be, 90 mL
That depends on WHERE the rig is, because
weight = (mass) x (acceleration of gravity where the object is) .
-- If the truck is on Mars, then
Weight = (36,000 kg) x (3.71² m/s²) = 133,560N.
-- If the truck is on the moon, then
Weight = (36,000 kg) x (1.62 m/s²) = 58,320N.
-- If the truck is on Earth, then
Weight = (36,000 kg) x (9.81 m/s²) = 353,160N.
It all depends.
Answer:
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Explanation: