Kamal said the distance from the top of the balloon to the ground in the Example is Ï···· 353 ft. What mistake might Kamal have made? 1 2

Answers

Answer 1

Complete question is;

Kamal said the distance from the top of the balloon to the ground in the Example image attached is √353 ft. What mistake might Kamal have made?

Answer:

the mistake Kamal made is that she probably used 17 ft as the perpendicular side of the triangle with b as the hypotenuse instead of using 17ft as the hypotenuse

Explanation:

From the image attached, we can see that the distance from the top of the balloon which is blue in color to the ground is denoted by "b".

Now the triangle is a right angle triangle with hypotenuse = 15ft + 2ft = 17 ft; the adjacent side = 8 ft, while the opposite side is "b".

Thus, we can use pythagoras theorem to solve this as;

b = √(17² - 8²)

b = √(289 - 64)

b = √225

b = 15ft

However,we are told Kamal got b as √353 ft.

From inspection of the calculations we just did, if we had used addition instead of subtraction, we would have gotten b = √353 ft.

Thus, we can under that the mistake Kamal made is that she probably used 17 ft as the perpendicular side of the triangle with b as the hypotenuse instead of using 17ft as the hypotenuse.

Kamal Said The Distance From The Top Of The Balloon To The Ground In The Example Is 353 Ft. What Mistake

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Explanation:

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How did we see through Venus thick atmosphere?

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Answer:

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How does the circuit structure affect the brightness of a bulb? How does the circuit structure affect the energy required to keep bulbs lit? Summarize some of the tradeoffs (pros and cons) of wiring bulbs in series vs. Parallel.

Answers

Answer:

Part A

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Part B

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Part C

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Disadvantage of bulbs arranged in parallel

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iv) When one bulb fuses, the others in the circuit keep working

Explanation:

Multiple Choice
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Answer:

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Explanation:

It is endothermic reaction.

What is a half-life?​

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Answer:

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Explanation:

Answer: A I think but I'm sure that Half Life is a video game by Valve.

Explanation:

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Answer:

Explanation:

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Answer:

Explanation:

Group 2 consists of the elements in the second column. They all have a combining number (valence number) of 2+ after giving away 2 electrons.They start with Beryllium (element 4 in the periodic table)  and end with Radium (element 88 in the periodic table).

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Answer:

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Answer:

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Answer:

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Answers

Answer:

The velocity ratio of the wedge is 0.15

Explanation:

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Answers

Answer:

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Answer:

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Explanation:

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Answers

The number of mole of the gas present in the room given the data is 0.069 mole

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How to determine the number of mole

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Answer:

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Answer:

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Answer:

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Answer:

The correct answer is...
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Answer:

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Answer:

Acceleration is -1.2 m/s² and distance covered is 135 m.

Explanation:

A train going at a speed of 18m / s brakes and stops in 15s calculates its acceleration and the distance traveled when braking

Given that,

The initial speed of the train, u = 18 m/s

Final speed, v = 0

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We need to find acceleration and distance traveled when braking. Let a is acceleration and distance traveled.

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A parallel plate capacitor of capacitance Co has plates of area A with separation d between them. When it is connected to a battery of voltage Vo, it has charge of magnitude Qo on its plates. It is then disconnected from the battery and the plates are pulled apart to a separation 2d without discharging them. After the plates are 2d apart, the new capacitance and the potential difference between the plates are: (Show all steps) [2 marks] a. ½ Co, ½ Vo b. ½ Co, 2Vo c. Co, Vo d. Co, 2Vo e. 2Co, 2Vo

Answers

Answer:

b. 1/2·C₀, 2·V₀

Explanation:

The capacitance on the parallel plate capacitor = C₀

The area of the plates  = A

The voltage on the battery = V₀

The magnitude of the charge on the plate = Q₀

The new distance between the plates = 2·d

From an online physics source, we have;

[tex]C_0 = \epsilon_0 \times \dfrac{A}{d}[/tex]

Where;

ε₀ = Constant

A = The area of the plates

With the new distance, 2·d, we get;

[tex]C_{new} = \epsilon_0 \times \dfrac{A}{2\cdot d} = \dfrac{1}{2} \times \epsilon_0 \times \dfrac{A}{d} = \dfrac{1}{2} \times C_0[/tex]

Therefore;

[tex]The \ new \ capacitance \ C_{new} = \dfrac{1}{2} \times C_0[/tex]

The potential difference, 'V', is given as follows;

[tex]C = \dfrac{Q}{V}[/tex]

Therefore;

[tex]V = \dfrac{Q}{C}[/tex]

Given that Q = Q₀, we get;

[tex]V = \dfrac{Q_0}{\dfrac{1}{2} \times C_0} = 2 \times \dfrac{Q_0}{C_0} = 2 \times V_0[/tex]

∴ V = 2 × V₀

The new potential difference, V = 2·V₀

Therefore, after the plates are 2·d apart, the new capacitance and potential difference between the plates are;

1/2·C₀, 2·V₀.

At a distance of 2d, the potential difference will be twice the potential difference before while the capacitance will be half the value before.

Given to us

The capacitance on the parallel plate capacitor = C₀The area of the plate = AThe voltage on the battery = V₀The magnitude of the charge in the plate = Q₀The new distance between the plates = 2d

What is Capacitance?

We know capacitance can be written as,

[tex]C= \dfrac{\epsilon_0 A}{d}[/tex]

where C is the capacitance,

A is the area,

d is the distance and

ε₀ is the electrostatic constant,

Capacitance before,

[tex]C= \dfrac{\epsilon_0 A}{d}[/tex]

Capacitance Afterwards,

[tex]C= \dfrac{\epsilon_0 A}{2d}[/tex]

[tex]C=\dfrac{1}{2} \times \dfrac{\epsilon_0 A}{d}[/tex]

[tex]C=\dfrac{1}{2} \times C_0[/tex]

What is Voltage(Potential difference)?

We know that  for the voltage we can write,

[tex]\rm Voltage = \dfrac{Charge}{Capacitance}[/tex]

Voltage before

[tex]V=\dfrac{Q_0}{C_0}[/tex]

Voltage Afterwards

[tex]V_{new} = \dfrac{Q_0}{C_{new}}[/tex]

[tex]V_{new} = \dfrac{Q_0}{\dfrac{1}{2} \times C_0}[/tex]

[tex]V_{new} = 2 \times\dfrac{Q_0}{C_0}[/tex]

[tex]V_{new} = 2 \times V_0[/tex]

Hence, At a distance of 2d, the potential difference will be twice the potential difference before while the capacitance will be half the value before.

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A 450.0N force is applied for 9.90s, what is the momentum?

Answers

Answer:

Momentum = 4455 Ns

Explanation:

Given the following data;

Force = 450 N

Time = 9.9 seconds

To find the momentum;

According to Newton's second law of motion in terms of momentum states that the net force acting on an object is equal to change in momentum divided by time.

Mathematically, it is given by the formula;

Net Force = change in momentum/time

Momentum = force * time

Substituting into the formula, we have;

Momentum = 450 * 9.9

Momentum = 4455 Ns

Please dont delete this question......

Answers

Answer:

c

Explanation:

Answer:

C.

Explanation:

A 15N block is sliding at constant speed across the frictionless floor of an ice rink.

Answers

Answer:

so, why we have to find here..

stay safe healthy and happy.

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Answers

Answer: Quantum is really just an amount of any physical entity involved in an interaction.

Explanation:

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Answers

Answer: you ever get the awnser?

Explanation:

Answer: 0.12 g

Explanation: I got it right on the quiz.

What is the potential difference across a circuit that delivers 4.2A to a 500W motor?

Answers

Answer:

Thus, the potential difference is 119 V.

Explanation:

Current, I = 4.2 A

Power, P = 500 W

The rate of doing work is called power.

The SI unit of power is Watt.

The  commercial unit of power is horse power.

1 horse power = 746 Watt

The formula of the electrical power is

P = V I

where, V is the voltage and I is the current.

Substitute the values in the formula

500 = 4.2 x V

V = 119 V

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