Ask question

Ask question

All categories

3 years ago

14

The ease with which a material allows electricity to move is called

2 answers:

Mkey [24]3 years ago

6 0

The ease with which a material allows electricity to move is called

C. CONDUCTIVITY

ivann1987 [24]3 years ago

4 0

Answer:

C. conductivity.

Explanation:

Conductivity measures the capacity of a material to allow electrical current to pass through it. This property depends on the physical factors, the temperature and the atomic structure of the material. For example, metals are good conductors because they have many electrons in the conduction band, that is, weakly attached to their nuclei, which allows a large flow of them.

You might be interested in

Alloys are mixtures of ________.

Hunter-Best [27]

Answer:

e.metals

Explanation:

5 0

3 years ago

Read 2 more answers

If a car has an initial velocity of 20 m/s and accelerates at 2.0 m/s2 for 100 m, what is its final velocity?

rodikova [14]

Answer:

28.28 ms-1

Explanation:

v² = u² + 2as

v² = 20² + 2×2×100

v²= 800

v = 28.28 ms-1

3 0

3 years ago

As a quality test of ball bearings, you drop bearings (small metal balls), with zero initial velocity, from a height of 1.94 m i

11Alexandr11 [23.1K]

Answer:

The average acceleration of the bearings is $0.77\times10^{3}\ m/s^2$

Explanation:

Given that,

Height = 1.94 m

Bounced height = 1.48 m

Time interval $t=14.86\times10^{-3}\ s$

Velocity of the ball bearing just before hitting the steel plate

We need to calculate the velocity

Using conservation of energy

$mgh=\dfrac{1}{2}mv^2$

Put the value into the formula

$9.8\times1.94=\dfrac{1}{2}\times v^2$

$v=\sqrt{2\times9.8\times1.94}$

$v=6.166\ m/s$

Negative as it is directed downwards

After bounce back,

We need to calculate the velocity

Using conservation of energy

$mgh=\dfrac{1}{2}mv^2'$

Put the value into the formula

$9.8\times1.48=\dfrac{1}{2}\times v^2'$

$v'=\sqrt{2\times9.8\times1.48}$

$v'=5.38\ m/s$

We need to calculate the average acceleration of the bearings while they are in contact with the plate

Using formula of acceleration

$a=\dfrac{v-v'}{t}$

Put the value into the formula

$a=\dfrac{5.38-(-6.166)}{14.86\times10^{-3}}$

$a=776.98\ m/s^2$

$a=0.77\times10^{3}\ m/s^2$

Hence,The average acceleration of the bearings is $0.77\times10^{3}\ m/s^2$

6 0

3 years ago

What is the name of the hair-like structures on sponge cells that move back and forth to help move water, nutrients, and waste t

Dima020 [189]

I think it's B. Flagella

5 0

3 years ago

Read 2 more answers

1.In one challenge on the Titan Games, competitors have to lift 200 pounds up a long ramp. Angel is able to move the weight in 4

77julia77 [94]

#1). Anthony does the same amount of work as Angel, with <em>more power</em>.

#2). Power = (Work)/(Time) = 41,000 J / 500 s = <em>82 watts .</em>

#3). Power = (Work) / (Time) = 83 J / 3 sec = <em>27.7 watts</em>

5 0

3 years ago

Read 2 more answers