All categories

3 years ago

What e-reader technology males a screen that is easy to read and extends battery life

1 answer:

6 0

I personally use the Kindle Paperwhite series, but any with an E-ink display will work great, as the display isn't very battery-consuming.

You might be interested in

Which laptop-pointing device is most commonly used today?

Free_Kalibri [48]

Touchpad. i believe,,i hope this helps!

6 0

3 years ago

A computer cooled by a fan contains eight PCBs, each dissipating 10 W power. The cooling air is supplied by a 25-W fan mounted a

Kay [80]

Given Information:

Qin = 8*10 = 80 W

Win = 25 W

Temperature = T2-T1 = 10°C

Required Information:

(a) flow rate of the air = m = ?

(b) fraction of the temperature rise of air = f = ?

Answer:

(a) flow rate of the air m = 0.01044 kg/s

(b) fraction of the temperature rise of air f = 23.8 %

Solution:

(a) The flow rate of the air that fan needs to deliver can be found by

$m = Q_{in} + W_{in} /C_{p} (T_{2} -T_{1} )$

Where the value of specific heat of air is 1005 j/kg.C

m = (80 + 25)/1005*10

m = 0.01044 kg/s

(b) fraction of the temperature rise of air due to fan

ΔT = Q/mCp

ΔT = 25/0.01044*1005

ΔT = 2.38°C

So the fan causes a temperature rise of 2.38°C

f = ΔT/T2-T1

f = 2.38/10

f = 0.238 = 23.8 %

8 0

3 years ago

Using a third-party package of your choice, write a program that reads the contents of a csv file and saves it to an Excel file.

laiz [17]

Answer:

import pandas as pd

df = pd.read_csv("file_csv")

df.to_excel("file.xlsx", sheet_name = "name_of_sheet")

# or use: with df.ExcelWriter("file.xlsx", mode='a') as file,

#df.to_excel(file, sheet_name= "sheet name")

Explanation:

This python source code uses the pandas package to read csv (comma separated values) file and converts it to an excel file (xlsx) using the read_csv and ExcelWriter methods respectively.

4 0

3 years ago

Please Helppp!!!! What type of lighting works best in the morning and at dusk?

alexira [117]

Answer:

solar light

Explanation:

This is because at this time, the sun is in the right place to illuminate the scene from the right angles, without overpowering the photograph. Light is one of the most important factors to take into account when taking a photograph.

8 0

3 years ago

What would be a best description about a dynamic data structure and a static data structure? quizlet

ahrayia [7]

The best description about a dynamic data structure and a static data structure is that dynamic data structures have a dynamic size which can be increased or decreased while static data structures are of fixed size.

<h3>What is a data structure?</h3>

This refers to the process of data organization, management and storage format that is usually chosen for efficient access to data.

However, the best description about a dynamic data structure and a static data structure is that dynamic data structures have a dynamic size which can be increased or decreased while static data structures are of fixed size.