All categories

3 years ago

What’s an insulator?

Physics

1 answer:

Daniel [21]3 years ago

4 0

Answer: a substance which does not readily allow the passage of heat or sound. so I think A or C but I pick A

Explanation:

You might be interested in

Two flat 4.0 cm × 4.0 cm electrodes carrying equal but opposite charges are spaced 2.0 mm apart with their midpoints opposite ea

Olenka [21]

Answer:

$q =1.07 \times 10^{-7}\ C$

Explanation:

given.

Two flat 4.0 cm × 4.0 cm electrodes carrying equal charge

space between the charges = 2 mm

Electric field strength = 7.6 x 10⁶ N/C

ε ₀ = 8.85 × 10⁻¹² C²/N · m²

magnitude of charge =?

Electric field strength between to two plates

$E = \dfrac{q}{A\epsilon_0}$

$q = E A \epsilon_0$

$q = 7.6 \times 10^6 \times 0.04 \times 0.04 \times 8.85 \times 10^{-12}$

$q =1.07 \times 10^{-7}\ C$

7 0

4 years ago

The __________________________________ of a sound is related to the amount of energy flowing in the sound waves.

pashok25 [27]

Answer:

intensity

Explanation:

The intensity of sound is a measure of how much <em>energy is flowing (through a unit area in which is perpendicular to the direction of the sound) per unit time.</em>

Its unit are micro joules per second per square cm. or watt per square cm.

watt is the unit of power and is gotten by the fact that power is the rate of doing work. so, p=E/t . The italicized text above (energy per unit time) can be replaced by power,p.

5 0

4 years ago

Which device or set of devices is contained in a mobile telephone?

Masja [62]

Un teléfono móvil o teléfono celular es un dispositivo portátil que puede hacer o recibir llamadas a través de una portadora de radiofrecuencia, mientras el usuario se está moviendo dentro de un área de servicio telefónco. El enlace de radiofrecuencia establece una conexión con los sistemas de conmutación de un operador de telefonía móvil, que proporciona acceso a la red telefónica pública conmutada (PSTN). La mayoría de los servicios de telefonía móvil modernos utilizan una arquitectura de red celular, y por lo tanto los teléfonos móviles son, con frecuencia, llamados celulares, especialmente en Hispanoamérica. En España, se utiliza más el término móvil.

6 0

3 years ago

To understand Newton's 1st law. Newton's Principia states this first law of motion: An object subject to no net force maintains

Doss [256]

Explanation:

Part A,

If a car is moving to the left with constant velocity, the change in velocity of the car is equal to zero. So the acceleration of the car is zero. As a result, the the net force applied to the car is zero.

So, the correct option is (c) "the net force applied to the car is zero".

Part B,

An object cannot remain at rest unless the net force acting on it is zero. This is Newton's first law of motion.

So, the correct option is (b).

Part C,

An object will have constant acceleration, the net force acting on it is constant in magnitude and direction. The net force acting on the object is directly proportional to its acceleration.

So, the correct option is (c).

Hence, this is the required solution.

7 0

4 years ago

At what temperature (in K) will 1.0 mol of gas occupy 1.0 m3 at a pressure of 1.0 * 10^4 pa

goblinko [34]

ideal gas equation ...pv=nrT ... n=2 ... r is gas constant T=10^4x1/8.3

8 0

3 years ago