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SOVA2 [1]
3 years ago
8

Oliver builds a circuit connecting a light bulb to a battery with wires, leaving a gap in one of the wires. He places several ob

jects across the gap to close the loop. He wants to see which objects allow electricity to flow and turn on the light bulb. Why do some materials allow electricity to flow through while others do not?
A. Electricity will flow if the atoms in the material are bound tightly to each other.

B. Electricity will flow if the atoms in the material are bound loosely to each other.

C. Electricity will flow if the electrons are bound tightly to their atoms in the material.

D. Electricity will flow if the electrons are bound loosely to their atoms in the material.
Physics
1 answer:
Alexxandr [17]3 years ago
6 0

Answer:

D. Electricity will flow if the electrons are bound loosely to their atoms in the material.

Explanation:

The continuous flow of charges is known as electricity (current). The flow of these charges are due to free or mobile electron within the atoms of the conductors. The materials which will allow current to pass through them, must have free or mobile electrons which are loosely bound to their atoms.

Thus, the correction for this question is "D"

D. Electricity will flow if the electrons are bound loosely to their atoms in the material.

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From the top of a cliff overlooking a lake, a person throws two stones. The two stones have identical initial speeds of v0 = 13.
Alina [70]

Answer:

X = 15.88 m

Explanation:

Given:

Initial Velocity V₀ = 13.4 m/s

θ = 30.1 °

g = 9.8 m/s²

To Find horizontal distance let "X" we have to time t first.

so from motion 2nd equation at Height h = 0

h = V₀y t + 1/2 (-g) t ²                                (ay = -g)

0 = 13.4 sin 30.1° t - 0.5 x 9.81 x t²           (V₀y = V₀ Sin θ)

⇒  t = 1.37 s

Now For Horizontal distance  X, ax =0m/s²

X = V₀x t + 1/2 (ax) t ²

X = 13.4 m × cos 30.1° x 1.37 s + 0

X = 15.88 m

8 0
4 years ago
A 1.5 kg tether ball is hit so that it circles the pole with an angular speed of 4m/s
My name is Ann [436]

Well, you didn't ask a question, and 4 m/s is not an angular speed.
So all I can offer is a couple of observations:

1). The tension in the rope is

      M V² / R  =  (1.5 kg) x (4 m/s)² / R

                     =  (24 kg-m²/s²) / (distance of the ball from the pole).

2).  Tetherball was the only thing I played at camp,
       more than 60 years ago, and I loved it !
       It was a tough game, because we had to skin
       our own T.Rex and use his hide to make the ball
       and his guts for the rope. 
5 0
4 years ago
The dung beetle is known as one of the strongest animals for its size, often forming balls of dung up to 10 times their own mass
salantis [7]

Answer:

The angular speed of rolling ball is 3.23 rad/sec.

Explanation:

Given that,

Radius = 1.95 cm

Speed = 6.30 cm/s

Suppose, we need to find the angular speed of rolling  ball

We need to calculate the angular velocity

Using formula of angular velocity

v = r\omega

Where, r = radius

\omega = angular velocity

Put the value into the formula

\omega = \dfrac{v}{r}

\omega =\dfrac{6.30}{1.95}

\omega=3.23\ rad/sec

Hence, The angular speed of rolling ball is 3.23 rad/sec.

3 0
3 years ago
What are the 3 units we use to measure the universe??
ioda
If you mean what types of measurements are used to measure in outer space, I believe it’s light-year, astronomical unit and intergalactic measurements, but I’m not completely sure.

Hopefully this helps...
6 0
3 years ago
22= 1/2 9.8 t^2
djverab [1.8K]

Answer:

5790 i dony kiow

Explanation:

6 0
3 years ago
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