How does Hydro Technology and Hydro Energy Help with Global Water Issues?

Sam promises to pay Sandy $2,000 in four years and another $3,000 four years later for a loan of $2,000 from Sandy today. What i

frozen [14]

Answer:

the interest rate that Sandy is getting is (C.) 15.10%

Explanation:

Given data

in 4 year cash pay (p1) = $2000

in 8 year cash pay (p2) = $3000

time period (t1) = 4 years

time period (t2) = 8 years

loan value = $2000

To find out

interest rate

solution

first we know amount will be paid in first 4 year is

$2000 $(1+r/100)^{12t}$

$2000 $(1+r/100)^{48}$ ...................1

now we calculate the next payment will paid after 4 year i.e.

$2000 $(1+r/100)^{12t}$ - $2000

$2000 $(1+r/100)^{48}$ - $2000 ..................2

after full time period of payment total amount will be paid by equation 1 and 2 i.e.

$3000 = $2000 $(1+r/100)^{48}$ ×$2000 $(1+r/100)^{48}$ - $2000

$3000 = $2000 ( $(1+r/100)^{48}$ × $(1+r/100)^{48}$ - 1 ) .....3

now we have solve $(1+r/100)^{48}$ this eqution

so we consider $(1+r/100)^{48}$ = A

so new equation will be by equation 3

$3000/$2000 = ( A - 1 ) × A

3/2 = A² - A

solve this equation we get 2A² - 2 A - 3 = 0 so A = 1.823

now we compute A again in $(1+r/100)^{48}$ = A

$(1+r/100)^{48}$ = 1.823

so rate (r) = 1.258 % / month

and rate yearly = 1.258 ×12

the interest rate that Sandy is getting yearly 15.10 %

8 0

3 years ago

Consider a magnetic disk consisting of 16 heads and 400 cylinders. This disk has four 100-cylinder zones with the cylinders in d

e-lub [12.9K]

Answer:

Disk Capacity = 45056000 bytes

Optimal skew = 26.455 ≈ 27

Maximum Data transfer rate = 262.5 GB per second

Explanation:

given data

heads = 16

cylinders = 400

cylinder zones = 100

each sector contains = 512 bytes

average seek time = 1 msec

disk rotates = 7200 RPM

to find out

disk capacity, optimal track skew, and maximum data transfer rate

solution

first we get total number of sectors that is

total number of sector = number of zones × (number of sectors in different zones

total number of sector = 100 × (160+200+240+280)

total number of sector = 88000

so

Disk Capacity = total number of sectors × size of each sector

Disk Capacity = 88000 × 512

Disk Capacity = 45056000 bytes

and

Rotation time = $\frac{60}{7200}$

Rotation time = 8.33 milli seconds

so Optimal number of sectors in a track = average of ( 160,200,240,280 )

Optimal number of sectors in a track = 220

now New sector is read every $\frac{8.33}{220}$ i.e = 0.0378 ms

here Optimal skew = seek time ÷ new sector read time

Optimal skew = $\frac{1}{0.0378}$

Optimal skew = 26.455 ≈ 27

and

here we know that for maximum transfer rate we will select cylinder with maximum number of sectors i.e here 280 sectors

so

capacity of one track with maximum = 280 × 512

capacity of one track with maximum = = 143360 bytes

and Number of rotations in 1 second is = $\frac{7200}{60}$

Number of rotations in 1 second is = 120

so Data transfer rate = Number of heads × Capacity of one track × Number of rotations in one second

Data transfer rate = 16 × 143360 × 120

Data transfer rate = 275251200 bytes per second

Data transfer rate = 262.5 GB per second

3 0

3 years ago

Ethylene glycol, the ingredient in antifreeze, does not cause health problems because it is a clear liquid.

netineya [11]

B. false

Explanation: because it is

5 0

3 years ago

The design product will be a description of the most efficient thermodynamic cycle required to supply 750 MW of electric power.

vlabodo [156]

Answer:

I'm 50s I be sliding on them crabs and we be posting 5 inta a Snapple

3 0

2 years ago

In your new role at Wayne Industries, you have been given the freedom to propose and develop your own project ideas. You have an

gulaghasi [49]

Answer:

461.65 KJ/Kg

Explanation:

In this question, we are asked to calculate the values of heat transferred in the process.

Please check attachment for complete solution and step by step explanation

5 0

4 years ago