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3 years ago

When sanitizing dishcloths or cutting boards at home using chlorine bleach, how much bleach should be added, per quart of water?

1 answer:

4 0

When using chlorine bleach, the proper amount for one gallon of water is 8 ounces, or one cup. Now, since there's 4 quarts in a gallon,divide the 8 ounces by 4. You get 2. So you should put 2 ounces (or 1/4 cup) of chlorine bleach in a quart of water. Hope this helps!

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HELP PLS ✨ What type of lava is in the Cerro Negro Volcano?

ale4655 [162]

Answer:

basaltic cinder cone

Explanation:

The volcano consists of a black ("negro") basaltic cinder cone with associated lava flows, including an aa flow field reaching 4 km to the NE and SW. The frequent eruptions of Cerro Negro have modified its morphology continuously since its birth 160 years ago

4 0

3 years ago

A SDOF undamped system is set into free vibration with an initial displacement and an initial velocity. The mass of the system i

loris [4]

Answer:

Explanation:

stiffness k = 160

m = 10

angular frequency ω = $\sqrt{\frac{k}{m} }$

= $\sqrt{\frac{160}{10} }$

= 4

ω = 4

Let x = 4 - A sinωt

when t = 0

x = 4 in

when t = 2 s , x = - 4

- 4 = 4 - A sinωt

8 = A sin 4 x 2

8 = A sin8

A = 8 / sin 8

= 8 / .989

= 8.09 in .

x = 4 - A sinωt

dx / dt = - Aω cosωt

v = - Aω cosωt

for t = 0

v = - Aω

= - 8.09 x 4

= - 32.36 in / s

initial velocity v = - 32.36 in /s

displacement x for t = 4s

x = 4 - 8.09 sin 4 x 4

= 4 - 8.09 sin 16

= 4 - 8.09 x - .2879

= 4 + 2.33

= 6.33 in.

c ) Amplitude of vibration A = 8.09 in .as calculated above .

4 0

3 years ago

Which statement best describes an electric current?

goldenfox [79]

Answer:

its B

Explanation:

the movement of charged particles in a conductor

7 0

3 years ago

Read 2 more answers

The water passing over victoria falls, located along the zambezi river on the border of zimbabwe and zabia drops about 105 m. Ho

7nadin3 [17]

Answer:

1029 Jkg⁻¹

Explanation:

$h$ = height dropped by the water falling = 105 m

$g$ = acceleration due to gravity = 9.8 ms⁻²

$m$ = mass of water

Using conservation of energy, the internal energy produced is same as the gravitational potential energy lost, hence

Internal energy = Gravitational potential energy

$U = mgh \\\frac{U}{m} = gh\\\frac{U}{m} = (9.8) (105)\\\frac{U}{m} = 1029 Jkg^{-1}$

7 0

4 years ago

A 3 inch fire hose has a water flow of 200 gallons per minute. What is the flow in liters per second? Note: Use US gallons not U

stepladder [879]

Answer:

Case I: 12.617 L/s

Case II: 161.406 cubic meters per hour

Case III: 1.062 Pound inches

Explanation:

Given:

Speed of water flow = 200 gallons per minute
Speed of air blow = 95 cubic feet per minute
Measure of Torque = 12 Newton centimeter

Assumptions:

1 US gallon = 3.785 L
1 min = 60 s
1 ft = 0.3048 m
1 h = 60 min
1 inch = 2.54 cm
1 N = 0.2248 lb

Case I:

$Speed\ of\ water\ flow = 200 \dfrac{gallon}{min}\\\Rightarrow V_{water} = 200\times \dfrac{3.785\ L}{60\ s}\\\Rightarrow V_{water} = 12.617\ L/s$

Case II:

$Speed\ of\ air\ blow = 95 \dfrac{ft^3}{min}\\\Rightarrow V_{air} = 95\times \dfrac{(0.3048\ m)^3}{\dfrac{1}{60}\ h}\\\Rightarrow V_{air} = 95\times (0.3048)^3\times 60\ m^3/h\\\Rightarrow V_{air} = 161.406\ m^3/h$

Case III:

$Measure\ of\ torque = 12\ N cm\\\Rightarrow \tau = 12\times (0.2248\ lb)\times \dfrac{1}{2.54}\ in\\ \Rightarrow \tau = 1.062\ lb in$

6 0

3 years ago