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3 years ago

A magnetically soft material is placed in a strong magnetic feild. what is the most likely outcome?

1 answer:

5 0

So we want to know what will happen if we put a magnetically soft material in a strong magnetic field. A magnetically soft material is a material whose magnetic field can easily be reversed. Those are ferromagnetic materials. Iron is such a material. When a magnetically soft material is placed into a strong magnetic field it gets its own magnetic field. But its not a permanent magnetic field, it can be changed by a different strong magnetic field.

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A uniform thin rod is hung vertically from one end and set into small amplitude oscillation. If the rod has a length of 2.6 m, t

Alinara [238K]

Answer:

Length of pendulum, l = 1.74 meters

Explanation:

The time period of simple pendulum is, $T=2\pi\sqrt{\dfrac{l}{g}}$

Where

l is the length of simple pendulum

The time period of uniform thin rod is hung vertically from one end is, $T=2\pi\sqrt{\dfrac{2l'}{3g}}$

l' is the length of uniform rod, l' = 2.6 m

It is given that the rod and pendulum have same time period. So,

$2\pi\sqrt{\dfrac{l}{g}}=2\pi\sqrt{\dfrac{2l'}{3g}}$

After solving above expression, the value of length of the pendulum is, l = 1.74 meters. Hence, this is the required solution.

5 0

3 years ago

Consult Multiple-Concept Example 5 for insight into solving this problem. A skier slides horizontally along the snow for a dista

antoniya [11.8K]

The initial velocity of the skier is 4.5 m/s

Explanation:

There is only one force acting on the skier in the horizontal direction, and it is the force of friction, whose magnitude is

$F_f = -\mu_k mg$

where

$\mu_k = 0.050$ is the coefficient of kinetic friction

m is the mass of the skier

$g=9.8 m/s^2$ is the acceleration of gravity

The negative sign is due to the fact that the direction of the force of friction is opposite to the direction of motion of the skier.

According to Newton's second law, the net force acting on the skier is equal to the product between his mass and his acceleration, so we can write:

$F=ma\\ \rightarrow -\mu_k mg = ma$

So, the acceleration of the skier is

$a=-\mu_k g$

Now we can apply the following suvat equation to find the initial velocity of the skier:

$v^2-u^2=2as$

where

v = 0 is the final velocity (he comes to a stop)

u is the initial velocity

s = 21 m is the displacement

a is the acceleration

Substituting the equation for the acceleration and solving for u, we find

$u=\sqrt{v^2-2as}=\sqrt{-2(-\mu_k g) s}=\sqrt{2(0.050)(9.8)(21)}=4.5 m/s$

Learn more about accelerated motion here:

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#LearnwithBrainly

5 0

3 years ago

Can someone plzzzz help with these 3 I don’t understand

Aleks [24]

12.) Active transport because the cell must use energy to move large particles across the membrane.

13.) Photosynthesis takes place in plant leaves containing the chlorophyll pigment. Cellular respiration takes place in the cytoplasm and mitochondria of the cell. ... Cellular respiration uses glucose molecules and oxygen to produce ATP molecules and carbon dioxide as the by-product.

14.) In cells with a nucleus, as in eukaryotes, the cell cycle is also divided into two main stages: interphase and the mitotic (M) phase (including mitosis and cytokinesis). During interphase, the cell grows, accumulating nutrients needed for mitosis, and undergoes DNA replication preparing it for cell division.

4 0

3 years ago

What formula oan be used to determine the velocity of an object in free fall?

belka [17]

Answer:

Explanation:

8 0

3 years ago

Read 2 more answers

What are the advantages of parallel circuits? Check all that apply

Bezzdna [24]

Answer:

If one bulb goes out, other bulbs stays lit.

If there is break in one branch of the circuit, current can still flow through other branches.

Parallel circuits are simple to design and build.

Explanation:

In parallel circuits all the components and resistors are connected to common terminal or common supply.

So here if we disconnect one of the branch of the circuit then it will not affect the other branches of the circuit so it will not affect the current of other branches.

So here it is very easy to build a parallel circuit and if one of the branch of the circuit goes out then it will not affect the other branches.

7 0

3 years ago

Read 2 more answers