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3 years ago

Which of the following is an action a Florida farm could take to reduce fecal coliform in nearby water supplies?

1 answer:

5 0

The best answer is B) Decrease the amount of animal waste that reaches the water supply

Fecal coliform typically originates in the waste produced by mammals, such as livestock. The farmer could do his part by take measures to decrease the amount of animal waste that reaches the water supply.

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Q.3. The equivalent resistance across AB is: (a)1 (c)2 (b)3 (d)4

sp2606 [1]

Answer:

1 ohm

Explanation:

First of all, the equivalent resistance for two resistors (r₁ and r₂) in parallel is given by:

1 / Eq = (1 / r₁) + (1 / r₂)

The equivalent resistance for resistance for two resistors (r₁ and r₂) in series is given by:

Eq = r₁ + r₂

Hence as we can see from the circuit diagram, 2Ω // 2Ω, and 2Ω // 2Ω, hence:

1/E₁ = 1/2 + 1/2

1/E₁ = 1

E₁ = 1Ω

1/E₂ = 1/2 + 1/2

1/E₂ = 1

E₂ = 1Ω

This then leads to E₁ being in series with E₂, hence the equivalent resistance (E₃) of E₁ and E₂ is:

E₃ = E₁ + E₂ = 1 + 1 = 2Ω

The equivalent resistance (Eq) across AB is the parallel combination of E₃ and the 2Ω resistor, therefore:

1/Eq = 1/E₃ + 1/2

1/Eq = 1/2 + 1/2

1/Eq = 1

Eq = 1Ω

7 0

3 years ago

An elevator weighing 2,200 lbs is raised one story in 20 seconds. If the distance between stories is 10 feet, the power is devel

kaheart [24]

Answer: 1100 ft lb/s and 2 H.P

Explanation:

To calculate for the power developed in the elevator motor in ft.lb/s, we multiply the distance and the weight of the elevator and divide the product by the time.

Power = (10 ft)(2200 lb) / 20 s = 1100 ft.lb/s

Next, convert the calculated value to HP.

1100 ft.lb/s x (1 HP/ 550 ft.lb/s) = 2 HP

hope this helps please give brainliest!

5 0

3 years ago

During a baseball game, a baseball is struck at ground level by a batter. The ball leaves the baseball bat with an initial speed

slava [35]

Answer:

The horizontal distance is 136.6 m.

Explanation:

Given that,

Initial speed = 38 m/s

Angle = 34°

Suppose, Calculate the horizontal distance $x_{max}$ in meters the ball has traveled when it returns to ground level.

We need to calculate the horizontal distance

Using formula of range

$R=\dfrac{v_{0}^2\sin(2\theta)}{g}$

Where, v= speed

g = acceleration due to gravity

Put the value into the formula

$R=\dfrac{(38)^2\sin(2\times34)}{9.8}$

$R=136.6\ m$

Hence, The horizontal distance is 136.6 m.

4 0

3 years ago

A ship coming from sea enters the river ,with its hull sink more or less in river water?Give reasons.

GenaCL600 [577]

Explanation:

Hey, there!

Answer: It sinks more.

We know that the water of sea is salty in nature which increases the density of water in sea and donot let's ship sink but in condition of river water it doesn't have any effects of salty water as it doesn't contain salty water due to which it's density is no more than the densityof ship which let's it sink more than sea water.

Hope it helps...

5 0

3 years ago

Classify each of the following statements as a characteristic (a) of electric forces only, (b) of magnetic forces only, (c) of b

ioda

A- electric forces only - WHEN The force exerted on a stationary charged object is nonzero.

B- magnetic forces ONLY - The magnitude of the force depends on the charged object's direction of motion.

C- both electric and magnetic forces - The force is proportional to the magnitude of the charge of the object on which the force is exerted.

D- neither electric nor magnetic forces- The force exerted on a moving charged object is zero.

(vi)- The force exerted on a charged object is proportional to its speed- magnetic forces only

To know more about magnetic forces visit : brainly.com/question/10353944

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4 0

2 years ago