All categories

4 years ago

Which substance(s) will be good conductors of electricity?

Physics

2 answers:

Igoryamba4 years ago

8 0

Answer:

copper like just look at battery today they hold it now

Paul [167]4 years ago

6 0

Answer:Metallic Conductors

Explanation:It is because it is so closely packed so that it the resistor's resistance are very low.

You might be interested in

Which moon phase comes before the phase in this picture?

hodyreva [135]

Waxing gibbous
Ushjdjsidjnd

8 0

3 years ago

Read 2 more answers

Which process is used to make low cost energy by nuclear power plant

Anika [276]

Fission is used to make the low cost energy

7 0

4 years ago

What is Yusef most likely finding?

Ratling [72]

Explanation:

yusef adds all of the values in his data set and then divide by the number of values in the set. the actual density of iron is 7.874 g/ml .

4 0

3 years ago

A 4.3 kg steel ball and 6.5 m cord of negligible mass make up a simple pendulum that can pivot without friction about the point

Alekssandra [29.7K]

Answer

given,

mass of steel ball, M = 4.3 kg

length of the chord, L = 6.5 m

mass of the block, m = 4.3 Kg

coefficient of friction, μ = 0.9

acceleration due to gravity, g = 9.81 m/s²

here the potential energy of the bob is converted into kinetic energy

$m g L = \dfrac{1}{2} mv^2$

$v= \sqrt{2gL}$

$v= \sqrt{2\times 9.8\times 6.5}$

v = 11.29 m/s

As the collision is elastic the velocity of the block is same as that of bob.

now,

work done by the friction force = kinetic energy of the block

$f . d = \dfrac{1}{2} mv^2$

$\mu m g. d = \dfrac{1}{2} mv^2$

$d=\dfrac{v^2}{2\mu g}$

$d=\dfrac{11.29^2}{2\times 0.9 \times 9.8}$

d = 7.23 m

the distance traveled by the block will be equal to 7.23 m.

8 0

3 years ago

the force shown in figure 7-15 moves an object from x=0 to x=0.75 m. How much work is done by the force?

Phantasy [73]

Work is force multiplied by the distance the force moves the object

6 0

4 years ago