Ask question

Ask question

All categories

sertanlavr [38]

4 years ago

8

Which fractures tend to occur first when a pane of glass is struck?

1 answer:

Irina18 [472]4 years ago

4 0

Radial fractures tend to occur first when a pane of glass is struck.

Answer: Option A

<u>Explanation:</u>

There is a slight difference between radial and concentric fractures and as radial fractures are formed which extends outwards in a radial manner from the point where the glass is struck.

Whereas concentric fractures are circular in pattern and they terminate long before radial crack. Also when a bullet is fired from a gun, a similar reaction is observed as it gets struck on the surface and fractures are formed in the same pattern.

You might be interested in

As you climb a mountain, you can expect the air temperature to decrease by 6.5 degrees C for every 1000 meters you ascend. This

Reptile [31]

Answer:

the answer will be C. 4 degrees C

Explanation:

you subtract base meters from peak meters to get 4 meters; then Multiply 6.5 by 4.

Then subtract that total from 30 degrees C

***as altitude increases, temperature decreases***

6 0

3 years ago

Where is the chart option found in the Excel application?

vodomira [7]

Answer:

its under the insert table

Explanation:

5 0

3 years ago

MAVERICK [17]

Answer:

7.8 miles just did it

Explanation:

4 0

3 years ago

There is a small scratch on a disco record located 14.5 cm from the center. When played, the scratch makes the record skip 30 ti

LuckyWell [14K]

Answer:

The linear speed of scratch is 45.55 cm/dec

Explanation:

The scratch located from the center at radial distance = 14.5 cm.

Each minute the skip of scratch when disco record played = 30 times

Since, the scratch on the disc start revolving when disc is played and in one minute the scratch revolve 30 times. Therefore, the revolution = 30 RPM

Below is the calculation of linear speed of the scratch.

$Angular \ velocity, \ w \ = \frac{2 \pi \times RPM}{60} \\$

$w = \frac{2 \pi \times 30}{60} = \pi \ rad/dec \\$

$Linear \ velocity = wr \\$

$r = radial \ distance \\$

$v = \pi \times 14.5 \\$

$v = 45.55 cm/dec$

3 0

3 years ago

A 591 μF capacitor is discharged through a resistor, whereby its potential difference decreases from its initial value of 88.5 V

Stels [109]

Answer:

2.6 kilo Ohm

Explanation:

Capacitance, C = 591 μF = 591 x 10^-6 F

Vo = 88.5 V

V = 11.9 V

t = 3.09 s

Let the resistance is R.

$V = V_{0}e^{\frac{-t}{RC}}$

$\frac{11.9}{88.5} = e^{\frac{-t}{RC}}$

$0.135 = e^{\frac{-t}{RC}}$

Take natural log on oth the sides

ln 0.135 = - 3.09 / RC

RC = 1.545

R = 1.545 / ( 591 x 10^-6)

R = 2614.2 ohm

R = 2.6 kilo Ohm

Thus the resistance is 2.6 kilo Ohm.

8 0

3 years ago