TRUE OR FALSE??

kodGreya [7K]

Answer:

A solenoid field is increased with the increase in the current flow through the coil.

Explanation:

A solenoid is a current carrying coil with a significant number of loops. It works like an electromagnet inside which, a uniform and strong magnetic field is created. The magnetic field outside the solenoid field is nearly zero but not exactly zero.

While experimenting with the solenoid, scientists came to know that the magnetic field generated by the solenoid increases with the increase in the current, flowing through the solenoid.

The magnetic field works strongly around the arena of coil. The field changes its direction only near the ends and gets weak. Else its uniform throughout the loops.

The magnetic field inside the solenoid can be formulated as,

$B=\mu n I$

Where,

B = Magnetic field generated by the solenoid

$\mu$ = Constant

I = Current flowing through the loops of the solenoid

5 0

3 years ago

The equation shows neutralization of an acid and a base to produce a salt and water.

Masja [62]

The answer is; 2.

To balance a chemical equation, the moles on one side of the equation has to be the same as that on the other side. This ensures that the law of conservation is observed because matter or energy can't be created or destroyed but can only be transformed from one form to another.

In this equation, putting 2 in front of NaCl ensures that there are 2 moles of Na and CL just as there are 2 moles of Na and CL in the reactants side.

6 0

3 years ago

Read 2 more answers

(12 points) Analysis from the point where the block is released to the point where it reaches the maximum height i) Calculate th

ycow [4]

Answer:

i) a₁ = -g (sin θ + μ cos θ), x = v₀² / 2a₁

ii) W = mg L sin θ , iii) Wₙ = 0

iv) W = - μ m g L cos θ x

Explanation:

With a drawing this exercise would be clearer, I understand that you have a block on a ramp and it is subjected to some force that makes it rise, for example the tension created by a descending block.

The movement is that when the system is released, the tension forces are greater than the friction and the component of the weight and therefore the block rises up the ramp

At some point the tension must become zero, when the hanging block reaches the ground, as the block has a velocity it rises with a negative acceleration to a point and stops where the friction force and the weight component would be in equilibrium along the way. along the plane

i) Let's use Newton's second law

the reference system is with the x axis parallel to the ramp

Axis y

N - W cos θ = 0

X axis

T - W sin θ - fr = ma

the friction force is

fr = μ N

fr = μ mg cos θ

we substitute

T - m g sin sin θ - μ mg cos θ = m a

a = T / m - g (sin θ + μ cos θ)

With this acceleration we can find the height that the block reaches, this implies that at some point the tension becomes zero, possibly when a hanging block reaches the floor.

T = 0

a₁ = -g (sin θ + μ cos θ)

v² = v₀² - 2a1 x

v = 0 at the highest point

x = v₀² / 2a₁

ii) the work of the gravitational force is

W = F .d

W = mg sin θ L

iii) the work of the normal force

the force has 90º with respect to the displacement so cos 90 = 0

Wₙ = 0

iv) friction force work

friction force always opposes displacement

W = - fr d

W = - μ m g cos θ L

4 0

3 years ago

How does inertia affect someone who isn't wearing a seatbelt

Paul [167]

Basically, when someone is resting in an accelerated vehicle without restraint from a seatbelt, the force of stopping the vehicle will be when inertia occurs, and that force of the vehicle coming to a stop will affect the passenger (without a seatbelt/restraint from another force or object) greatly by throwing them.
For example;
If I were to be riding in a vehicle (without a seatbelt) that's accelerating at 40 m/s^2 and it suddenly gets slammed on the breaks, I will be thrown forward from inside the vehicle.

I hope this helps!

7 0

4 years ago

What type of heat do we get from sun

seraphim [82]

The type of heat that the Sun emits is called UV (Ultra Violet) rays. This is a natural type of heat, but it can also be dangerous if you expose yourself to too much UV heat, causing "sunburns", or even skin cancer.

5 0

4 years ago

Read 2 more answers