It is the responsibility of every employee to ensure that tools are used ____ and___

If aligned and continuous carbon fibers with a diameter of 9.90 micron are embedded within an epoxy, such that the bond strength

Zielflug [23.3K]

I have no idea what it is

8 0

3 years ago

a cubical box 20-cm on a side is contructed from 1.2 cm thick concrete panels. A 100-W light bulb is sealed inside the box. What

Flura [38]

Answer:

Temperature on the inside ofthe box

Explanation:

The power of the light bulb is the rate of heat conduction of the bulb, $dq/dt = 100 W$

The thickness of the wall, L = 1.2 cm = 0.012m

Length of the cube's side, x = 20cm = 0.2 m

The area of the cubical box, A = 6x²

A = 6 * 0.2² = 6 * 0.04

A = 0.24 m²

Temperature of the surrounding, $T_0 = 20^0 C = 273 + 20 = 293 K$

Temperature of the inside of the box, $T_{in} = ?$

Coefficient of thermal conductivity, k = 0.8 W/m-K

The formula for the rate of heat conduction is given by:

$dq/dt = \frac{kA(T_{in} - T_0)}{L} \\\\100 = \frac{0.8*0.24(T_{in} - 293)}{0.012}\\\\T_{in} - 293 = \frac{100 * 0.012}{0.8*0.24} \\\\T_{in} - 293 = 6.25\\\\T_{in} = 293 + 6.25\\\\T_{in} = 299.25 K\\\\T_{in} = 299.25 - 273\\\\T_{in} = 26.25^0 C$

5 0

4 years ago

Which equation can be used to find x, the length of the hypotenuse of the right triangle? A triangle has side lengths 63, 16, x.

Kryger [21]

Answer: 16 squared + 63 squared = x squared

Explanation:

Hi, since we have a right triangle we have to apply the Pythagorean Theorem:

c^2 = a^2 + b^2

Where c is the hypotenuse of the triangle (the longest side) and a and b are the other sides.

Replacing with the values given:

x^2 = 63^2 + 16^2

So, the correct option is

16 squared + 63 squared = x squared

Feel free to ask for more if needed or if you did not understand something.

3 0

3 years ago

Read 2 more answers

First drilled to a depth of 1 47/64 how much deeper must it be drilled to reach the depth indicated?

lara [203]

Answer:

1 13/64

Explanation:

The depth of the hole is the height of the block less the remaining material below the hole:

depth = 1 3/8 +1 15/16 - 3/8 = (1 3/8 -3/8) +1 15/16 = 2 15/16

We want to find the difference between this depth and the depth of the hole already drilled:

2 15/16 -1 47/64 = 2 60/64 -1 47/64

= (2 -1) +(60 -47)/64 = 1 13/64

The hole must be drilled 1 13/64 deeper to match the drawing.

7 0

2 years ago

The outer surface of a spacecraft in space has an emissivity of 0.6 and an absorptivity of 0.2 for solar radiation. If solar rad

Korolek [52]

Answer:

$T_{surf} =$ 3.9°C

Explanation:

solution:

we express the surface temperature from the quality of the emitted and absorbed heat rates:

$Q_{abs} =Q_{em} \\\$

$\alpha Q_{inc}=$ εσA $T^{4} _{surf}$

$T_{surf} =$ $\sqrt[4]{}$ $\alpha$ /εσ* $\frac{Q_{inc} }{A}$ ........................(1)

where

$\alpha$ =0.2

ε=0.6

A=5.67*10^-8 W/m^2K^4

$Q_{inc}$ = 1000 W/m^2

now putting these value in eq 1

$T_{surf} =$ 3.9°C

6 0

3 years ago

It is the responsibility of every employee to ensure that tools are used ____ and____.

It is the responsibility of every employee to ensure that tools are used and.