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GarryVolchara [31]
3 years ago
15

Which statements best characterize conductors? Check all that apply.

Physics
2 answers:
romanna [79]3 years ago
5 0
It would be the first one and the third one
lidiya [134]3 years ago
5 0

Answer:

Conductors allow electricity to easily move through them.  

Metal is an example of a conductor.  

Explanation:

Conductors are materials that have free electrons, so they allow electrical currents (which are made of electrons traveling) passing through them.

Let's analyze each statement separately:

- Conductors allow electricity to easily move through them.  --> TRUE: conductors allow electrical currents to pass through them.

- Glass is an example of a conductor.  --> FALSE: glass is an example of insulator (insulators are materials that do not allow the flow of current)

- Metal is an example of a conductor.   --> TRUE: metals are generally good conductors of electricity, since they have many free electrons.

- Conductors do not allow electricity to easily move through them.   --> FALSE: it's actually the opposite, conductors allow electricity to easily move through them.

- Conductors restrict the flow of thermal energy. --> FALSE: conductors are generally also good conductors of thermal energy, so they do not restrict the flow of thermal energy.

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A wave that is oscillation of matter.. such as a water ripples
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1. An object in free fall will have an initial velocity equal to zero when: a. It is thrown vertically down
Ne4ueva [31]

Answer:

b. It is dropped

Explanation:

If the initial velocity is zero, the object move from rest. That happens if the object is dropped

6 0
3 years ago
If a player through a basketball to the target with an initial velocity of 17 m/s making an angle of 30 degrees with the horizon
Svetllana [295]

Answer:

The final position made with the vertical is 2.77 m.

Explanation:

Given;

initial velocity of the ball, V = 17 m/s

angle of projection, θ = 30⁰

time of motion, t = 1.3 s

The vertical component of the velocity is calculated as;

V_y = Vsin \theta\\\\V_y = 17 \times sin(30)\\\\V_y = 8.5 \ m/s

The final position made with the vertical (Yf) after 1.3 seconds is calculated as;

Y_f = V_yt  - \frac{1}{2}g t^2\\\\Y_f = (8.5 \times 1.3 ) - (\frac{1}{2} \times 9.8 \times 1.3^2)\\\\Y_f = 11.05 \ - \ 8.281\\\\Y_f = 2.77 \ m

Therefore, the final position made with the vertical is 2.77 m.

3 0
2 years ago
How is property belonging to individuals protected under the Fifth Amendment?
kotegsom [21]

Answer:

By preventing the government from taking property without fair payment.

Explanation:

Answer 1

Please mark me as brilliant and thank you

7 0
3 years ago
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A 0.560 kg snowball is fired from a cliff 14.2 m high with an initial velocity of 13.3 m/s, directed 26.0° above the horizontal.
enot [183]

Answer:

a) v = 21.34 m/s

b) v = 21.34 m/s

c) v = 21.34 m/s

Explanation:

Mass of the snowball, m = 0.560 kg

Height of the cliff, h = 14.2 m

Initial velocity of the ball, u = 13.3 m/s

θ = 26°

The speed of the slow ball as it reaches the ground, v = ?

The initial Kinetic energy of the snow ball, KE_{0}  = 0.5 mu^{2}

Potential energy of the snow ball at the given height, PE = mgh

Final Kinetic energy of the ball as it reaches the ground, KE_{f} = 0.5mv^{2}

a) Using the principle of energy conservation,

KE_{0} + PE = KE_{f} \\0.5mu^{2} + mgh = 0.5mv^{2}\\v^{2} =2( 0.5u^{2} + gh)\\v^{2} =u^{2} + 2gh\\v = \sqrt{u^{2} + 2gh} \\v = \sqrt{13.3^{2} + 2*9.8*14.2}\\v = 21.34 m/s

b) The speed remains v = 21.34 m/s since it is not a function of the angle of launch

c)The principle of energy conservation used cancels out the mass of the object, therefore the speed is not dependent on mass

v = 21. 34 m/s

7 0
3 years ago
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