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3 years ago

When material allow to heat to pass though them rapidly they are known as __________

Physics

2 answers:

arsen [322]3 years ago

7 0

Answer:when material allow to heat to pass though them rapidly they are known as <u>Conductors</u>

What are conductors

In physics /electrical engineering They allow the flow of charge (electrical current) in one or more directions. Materials made of metal are common electrical conductors.

What are examples of conductors

.Silver

.copper

.iron

.aluminum

.brass

Difference between conductors and insulators?

Insulators a material that is a poor conductor (as of electricity or heat)Whereas Conductors are fantastic at allowing the flow of the heat.

Hope this helps

<em>-Tobie</em>

Katarina [22]3 years ago

5 0

Answer:

They are conductors/conductive. Materials that can transfer thermal energy well are conductive.

Explanation:

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List the planets that have MORE THAN 3 moons.

antiseptic1488 [7]

Answer:

jupiter they have 79 moons,saturn has 62,uranus has 27,neptune has 14,pluto has 5,

Explanation:

6 0

4 years ago

A pitcher throws a curveball that reaches the catcher in 0.61 s. The ball curves because it is spinning at an average angular ve

sashaice [31]

Answer:

22.36 rad

Explanation:

Applying,

ω = θ/t.............. Equation 1

Where ω = angular velocity, θ = angular displacement of the baseball, t = time

make θ the subject of the equation

θ = ωt............... Equation 2

From the question,

Given: ω = 350 rev/min = 350(0.10472) = 36.652 rad/s, t = 0.61 s

Substitute these values into equation 1

θ = 0.61(36.652)

θ = 22.36 rad

Hence the angular displacement of the baseball is 22.36 rad

4 0

3 years ago

Planets are not uniform inside. Normally, they are densest at the center and have decreasing density outward toward the surface.

SSSSS [86.1K]

Answer:

a = 9.94 m/s²

Explanation:

given,

density at center= 1.6 x 10⁴ kg/m³

density at the surface = 2100 Kg/m³

volume mass density as function of distance

$\rho(r) = ar^2 - br^3$

r is the radius of the spherical shell

dr is the thickness

volume of shell

$dV = 4 \pi r^2 dr$

mass of shell

$dM = \rho(r)dV$

$\rho = \rho_0 - br$

now,

$dM = (\rho_0 - br)(4 \pi r^2)dr$

integrating both side

$M = \int_0^{R} (\rho_0 - br)(4 \pi r^2)dr$

$M = \dfrac{4\pi}{3}R^3\rho_0 - \pi R^4(\dfrac{\rho_0-\rho}{R})$

$M = \pi R^3(\dfrac{\rho_0}{3}+\rho)$

we know,

$a = \dfrac{GM}{R^2}$

$a = \dfrac{G( \pi R^3(\dfrac{\rho_0}{3}+\rho))}{R^2}$

$a =\pi RG(\dfrac{\rho_0}{3}+\rho)$

$a =\pi (6.674\times 10^{-11}\times 6.38 \times 10^6)(\dfrac{1.60\times 10^4}{3}+2.1\times 10^3)$

a = 9.94 m/s²

7 0

3 years ago

A pitched ball is hit by a batter at a 45degrees angle and just clears the outfield fence, 98m away. Assume that the fence is at

Alex17521 [72]

The range of a projectile can be found directly using:
R = (v²sin2∅) / g
v = √((98 x 9.81)/(sin(90)))
v = 31.0 m/s

8 0

3 years ago

You pull downward with a force of 27.3 N on a rope that passes over a disk-shaped pulley of mass 1.43 kg and radius 0.0792 m. Th

Salsk061 [2.6K]

Answer:

The tension in the left side string = 17.21 N

The tension in the right side string = F = 27.3 N

Explanation:

Given that

F= 27.3 N

M= 1.43 kg ,r= 0.0792 m

Moment of inertia of disk ,I = 0.5 m r²

I = 0.5 x 1.43 x 0.0792² = 0.0044 kg.m²

m= 0.7 kg

Lets take linear acceleration of system is a m/s²

Lets take tension in left side string = T

From Newtons law

T- mg = ma

T- 0.7 x 10 = 0.7 a ----------1

(F - T) r = I α

α = Angular acceleration of disk

a = α r

(F - T) r = I α

(F - T) r² = I a

( 27.3 - T) x 0.0792² = 0.0044 a --------2

Form equation 1 and 2

a= 1.42 T - 10 m/s²

a = 1.42 ( 27.3 - T) m/s²

1.42 T - 10 = 38.9 - 1.42 T

T=17.21 N

The tension in the right side string = F = 27.3 N

5 0

3 years ago

When material allow to heat to pass though them rapidly they are known as __________​

When material allow to heat to pass though them rapidly they are known as __________