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Greeley [361]
3 years ago
5

Calculate the heat energy required to raise the temperature of 5 kg of water from 20℃ to

Computers and Technology
1 answer:
valina [46]3 years ago
6 0

Given that,

Mass of water, m = 5 kg

The temperature increases from 20℃ to  40℃.

Specific heat capacity of water is 4200 J kg⁻¹ k⁻¹

To find,

Heat energy required to raise the temperature.

Solution,

The formula for the heat energy required to raise the temperature is given by :

Q=mc\Delta T\\\\=5\times 4200\times (40-20)\\\\=420000\ J\\\\=420\ kJ

So, the heat energy required is 420 kJ.

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A spreadsheet contains the maximum weight and maximum height for fifty dog breeds. The breeds are located in rows, and the weigh
MrRa [10]

Answer:

a. Locate

Explanation:

Question options (obtained on the net):

a. Locate

b. Sort

c. Filter

d. Replace

Explanation:

The largest value of the weights of the dog breed in row 43 is the maximum weight of the dog breed in the row

The 'MAX' formula or the 'Autosum' tool can be used to give the largest value in a row, or column

To locate the maximum value in MS Excel, the ADDRESS and MATCH and MAX functions are combined and entered into the blank cell on the right, specifying the same range for the MAX and MATCH functions, and a '0' for the MATCH function as well as a '1' for the ADDRESS function as follows;

=ADDRESS(MATCH(MAX(A1:E1), A1:E1, 0), 1)

Therefore, to navigate to the maximum weight, Emily should use a <em>locate</em>(ing) tool navigate to the information on the spread sheet

8 0
2 years ago
There are local administrators for each of the departments, excluding the IT. These local administrators will use the local admi
torisob [31]

Answer:

Listed below are the few ways Linux Server can be secured

1. Group policies: This is a way to ensure security by applying group policies and permissions both on the group level and the files level. Through proper permission configuration we can easily restrict other users from accessing those files and directories.

2. Implementation of the firewall: Implementing firewall in each of the Linux server will definitely help in securing your machine from outside threats. Iptables will help in filtering the network traffic that are entering into the system and even going out of the system.

3.Enabling SELINUX: Enabling SELINUX is another way to secure your system especially a Linux Server. Selinux is a powerful security that checks and allows applications to run into the system. It won't allow any untrusted application to run into the system.

6 0
3 years ago
Antivirus software products require that you update _____ on a regular basis
german
Operating System, as far as I know @[email protected]
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3 years ago
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Given the code that reads a list of integers, complete the number_guess() function, which should choose a random number between
Cerrena [4.2K]

Answer:

see explaination

Explanation:

import random

def number_guess(num):

n = random.randint(1, 100)

if num < n:

print(num, "is too low. Random number was " + str(n) + ".")

elif num > n:

print(num, "is too high. Random number was " + str(n) + ".")

else:

print(num, "is correct!")

if __name__ == '__main__':

# Use the seed 900 to get the same pseudo random numbers every time

random.seed(900)

# Convert the string tokens into integers

user_input = input()

tokens = user_input.split()

for token in tokens:

num = int(token)

number_guess(num)

5 0
3 years ago
Use the variables k and total to write a while loop that computes the sum of the squares of the first 50 counting numbers, and a
pshichka [43]
Int   k=0.total=0;
while(k++<50)
    total+=k*k;
    

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