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fenix001 [56]
4 years ago
10

A material does not allow charges to move freely through it. Which statement is the best prediction about this material?

Physics
2 answers:
Ronch [10]4 years ago
6 0
It is a better insulator than a conductor and has less free electrons than a conductor does. That should answer your question if not let me know.
Mila [183]4 years ago
6 0

Answer:

Insulators

Explanation:

There are two types of materials.

1. Conductors: The materials which can allow the charge to flow through it are called conductors. For example, iron, copper, silver, etc.

2. Insulators: The materials which do not allow the charge to pass through it are called insulators. For example, wood, plastic, rubber, etc.

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A stuntwoman is going to attempt a jump across a canyon that is 77 m wide. The ramp on the far side of the canyon is 25 m lower
liq [111]

initial speed of the stuntman is given as

v = 28 m/s

angle of inclination is given as

\theta = 15 degree

now the components of the velocity is given as

v_x = 28 cos15 = 27.04 m/s

v_y = 28 sin15 = 7.25 m/s

here it is given that the ramp on the far side of the canyon is 25 m lower than the ramp from which she will leave.

So the displacement in vertical direction is given as

\delta y = -25 m

\delta y = v_y * t + \frac{1}{2} at^2

-25 = 7.25 * t - \frac{1}{2}*9.8* t^2

by solving above equation we have

t = 3.12 s

Now in the above interval of time the horizontal distance moved by it is given by

d_x = v_x * t

d_x = 27.04 * 3.12 = 84.4 m

since the canyon width is 77 m which is less than the horizontal distance covered by the stuntman so here we can say that stuntman will cross the canyon.

5 0
3 years ago
A model airplane moves twice as fast as another identical model airplane. compared with the kinetic energy of the slower airplan
Papessa [141]
Twice as fast, so multiply the kinetic energy of the slower plane by two.
6 0
3 years ago
A 14 cm object is 20 cm from a concave lens that has a focal length of -10cm.
Hunter-Best [27]
-6.7cm just took the time to put this answer down because its been helping me and its right so good luck
8 0
4 years ago
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What happens to energy as frequency increases on the electromagnetic spectrum?
gladu [14]
As a wavelength increases in size, its frequency and energy (E) decrease. From these equations you may realize that as the frequency increases, the wavelength gets shorter. ... Mechanical and electromagnetic waves with long wavelengths contain less energy than waves with short wavelengths.
5 0
3 years ago
Determine the pressure P of a 450K Oxygen gas in a gas chamber when its initial pressure is 175Pa has a temp 300K
FrozenT [24]

Answer:

262.5Pa

Explanation:

Given parameters:

P1  = 175Pa

T1  = 300K

T2  = 450K

Unknown:

P2  = ?

Solution:

To solve this problem, we are going to use an adaptation of the combined gas law.

           \frac{P1}{T1}    = \frac{P2}{T2}  

  Insert the parameters and solve;

           \frac{175}{300}    = \frac{P2}{450}  

          P2 = 262.5Pa

8 0
3 years ago
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