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garri49 [273]
3 years ago
5

When water precipitates from the sky, runs off downhill along the ground, or infiltrates down into the soil, its gravitational p

otential energy is transforming into what other form of energy? (two words) *
Engineering
1 answer:
agasfer [191]3 years ago
8 0

Answer:

Geothermal energy.

Explanation:

Geothermal energy is called a renewable energy source because the water is replenished by rainfall, and the heat is continuously produced by the earth.

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You are using a Geiger counter to measure the activity of a radioactive substance over the course of several minutes. If the rea
Reika [66]

Answer: 33.35 minutes

Explanation:

A(t) = A(o) *(.5)^[t/(t1/2)]....equ1

Where

A(t) = geiger count after time t = 100

A(o) = initial geiger count = 400

(t1/2) = the half life of decay

t = time between geiger count = 66.7 minutes

Sub into equ 1

100=400(.5)^[66.7/(t1/2)

Equ becomes

.25= (.5)^[66.7/(t1/2)]

Take log of both sides

Log 0.25 = [66.7/(t1/2)] * log 0.5

66.7/(t1/2) = 2

(t1/2) = (66.7/2 ) = 33.35 minutes

4 0
3 years ago
A 240 V, 60 Hz squirrel-cage induction motor has a full-load slip of 0.02 and a full-load speed of 1764 rpm. The winding resista
earnstyle [38]

Answer:

full load current = 7.891151 A

so correct option is b. Ir= 7.89

Explanation:

given data

Energy E = V = 240 V

frequency =  60 Hz

full-load slip = 0.02

full-load speed = 1764 rpm

winding resistance = 0.6 Ω

winding reactance = 5 Ω

to find out

rotor current at full-load

solution

we will apply here full load current formula that is express as

full load current = \frac{S*E}{\sqrt{R^2+ (S*X)^2}}    ...................1

here S is full-load slip and E is energy given and R is winding resistance and    X is winding reactance

put here value we get

full load current = \frac{0.02*240}{\sqrt{0.6^2+ (0.02*5)^2}}  

full load current = 7.891151 A

so correct option is b. Ir= 7.89

6 0
3 years ago
What is the work required to deflect a linear spring (k=32 kN/m) by 120 cm?
Anit [1.1K]

Answer:

the work done by the linear spring will be equal to 23.04 k J

Explanation:

given,

k = 32 k N /m

deflected spring = 120 cm

                            = 1.2 m

work done by spring can be calculate as

                          = \dfrac{1}{2}kx^2

                          = \dfrac{1}{2}\times 32 \times 1.2^2

                          = 23.04 k J

hence, the work done by the linear spring will be equal to 23.04 k J

6 0
3 years ago
The asymmetric roof truss is of the type used when a near normal angle of incidence of sunlight onto the south-facing surface AB
marysya [2.9K]

Answer:

Check the explanation

Explanation:

Kindly check the attached image below to see the step by step explanation to the question above.

6 0
4 years ago
Your friend offers to pay you $3,000 five years from now. You'd prefer the money now so you can put it in a bank account at 8% i
zepelin [54]

Answer:

  $958.25

Explanation:

  PV = FV(1 +r)^(-t) . . . . present value of an amount earning rate r compounded annually for t years

  PV = $3000(1.08^-5) ≈ $2041.75

The equivalent present value is $2041.75.

__

This amount is less than the offered amount by ...

  $3000 -2041.75 = $958.25

She should pay you $958.25 less in order to make the offers equivalent.

4 0
3 years ago
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