The value of total resistance of resistors connected in parallel is calculated through the equation,
R = 1 / (1/R1 + 1/R2 + 1/R3 + 1/Rn)
Substituting the known values,
R = 1 / (1/2 + 1/6 + 1/10)
R = 30/23 ohms
The formula for power with the use of resistance and voltage is,
P = V² / R
Substituting,
P = (100 V)² / (30/23 ohms)
P = 7.67 kW
Thus, the answer to this item is letter C.
Answer:
The use case diagram is attached.
Explanation:
Create a set of use cases for the following health club membership system:
When members join the health club, they pay a fee for a certain length of time. Most memberships are for one year, but memberships as short as two months are available. Throughout the year, the health club offers a variety of discounts on its regular membership prices (e.g., two memberships for the price of one for Valentine's Day). It is common for members to pay different amounts for the same length of membership. The club wants to mail out reminder letters to members asking them to renew their memberships one month before their memberships expire. Some members have become angry when asked to renew at a much higher rate than their original membership contract, so that the clubwants to track the price paid so that the manager can override the regular prices with special prices when members are asked to renew. The system must track these new prices so that renewals can be processed accurately. One of the problems in the healthclub industry is the high turnover rate of members. While some members remain active for many years, about half of the members do not renew their memberships. This is a major problem because the health club spends a lot in advertising to attract each new member. The manager wants the system to track each time a member comes into the club. The system will then identify the heavy users and generate a report so that the manager can ask them to renew their memberships early, perhaps offering them a reduced rate for early renewal. Likewise, the system should identify members who have not visited the club in more than a month so that the manager can call them and attempt to reinterest them in the club.
The use case diagram is attached.
The word DoS refers to the Disk Operating System. In the case given above, if it happens that there is a distributed DoS attack, the attacker then sends messages directly to the BOTS. Bots refer to internet or web robots. Hope this answer helps. The answer is the first option.
Answer:
PNG, GIF
Explanation:
On a Web page, we'll assume he'll have simple graphic elements like icons, or other simple low-resolution and a lower number of colors (256-), these are usually better saved in GIF format to take less space, just because of the smaller color map, but PNG could also do a great job and it offers transparency as well (like GIF does).
For more complex elements (larger size and/o more colors like photos), the best format to save them is probably the PNG one. They will be compressed but still offer a great quality.
Answer: Pivot Table Report
Explanation:
To create an interactive Pivot Table for the web, we can use a Ms office web component which is known as the pivot table report.
We should note that the pivot tables are simply used for the summarizing of data. Huge amounts of data can be processed with them, after which a report showing sums, averages, totals and every other calculations can be gotten.