Ask question

Ask question

All categories

AlladinOne [14]

3 years ago

6

Why there is deflection in galvanometer when magnetic is approachin or withdraw

1 answer:

spin [16.1K]3 years ago

7 0

Answer:

When the bar magnet is withdrawn from inside the coil, again an induced current is setup in the coil due to change of magnetic field through it. As a result galvanometer gives a deflection in the reverse direction

You might be interested in

What causes changes in weather?

MrRissso [65]

Climate change caused<span> by human activities that emit greenhouse gases into the air is expected to affect the frequency of extreme </span>weather<span> events such as drought, extreme temperatures, flooding, high winds, and severe storms.</span>

8 0

4 years ago

Read 2 more answers

how fast will and in what direction will a 20kg object accelerate if one force pushes at a 30 degree angle and another pushes at

DiKsa [7]

Answer:

$|a|=2.83\ m/s^2$

$\theta=75^o$

Explanation:

<u>Net Force And Acceleration </u>

The Newton's second law relates the net force applied on an object of mass m and the acceleration it aquires by

$\vec F_n=m\vec a$

The net force is the vector sum of all forces. In this problem, we are not given the magnitude of each force, only their angles. For the sake of solving the problem and giving a good guide on how to proceed with similar problems, we'll assume both forces have equal magnitudes of F=40 N

The components of the first force are

$\vec F_1=$

$\vec F_1=\ N$

The components of the second force are

$\vec F_2=$

$\vec F_2=\ N$

The net force is

$\vec F_n=$

$\vec F_n=\ N$

The magnitude of the net force is

$|F_n|=\sqrt{14.64^2+54.64^2}$

$|F_n|=\sqrt{3200}=56.57\ N$

The acceleration has a magnitude of

$\displaystyle |a|=\frac{|F_n|}{m}$

$\displaystyle |a|=\frac{56.57}{20}$

$|a|=2.83\ m/s^2$

The direction of the acceleration is the same as the net force:

$\displaystyle tan\theta=\frac{54.64}{14.64}$

$\theta=75^o$

5 0

3 years ago

A force that causes an object to change its motion is called a(n) _______

ElenaW [278]

Answer:

I believe it is A. Unbalanced.

Explanation:

Hope i helped you!

3 0

3 years ago

Read 2 more answers

Please help will mark Brainliest. An object is dropped from the roof of a building. After 3.5 seconds, the object strikes the gr

Naddika [18.5K]

Answer:

19.62 m/s

34.335 m/s

1.75 m

Explanation:

v = Final velocity

u = Initial velocity = 0

a = g = Acceleration due to gravity = $9.81\ \text{m/s}^2$

t = Time taken = 2 s

From the equations of linear motion we have

$v=u+at\\\Rightarrow v=0+9.81\times 2\\\Rightarrow v=19.62\ \text{m/s}$

The speed of the object after 2 seconds is 19.62 m/s

t = 3.5 s

$v=u+at\\\Rightarrow v=0+9.81\times 3.5\\\Rightarrow v=34.335\ \text{m/s}$

The velocity of the object when it strikes the ground is 34.335 m/s.

$v^2-u^2=2as\\\Rightarrow s=\dfrac{v^2-u^2}{2a}\\\Rightarrow s=\dfrac{34.335-0}{2\times 9.81}\\\Rightarrow s=1.75\ \text{m}$

THe height from which the object was dropped is 1.75 m.

8 0

3 years ago

If a police car is travelling towards you what effect does this have on the police<br> siren?

ehidna [41]

Answer:

well they make the siren go beacaus eyou are doing somthing wrong so what were you thinking

Explanation:

7 0

3 years ago