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3 years ago

Determine the vertex form of g(x) = x2 + 2x - 1. Which graph represents g(x)? 5) Intro

Physics

1 answer:

Paladinen [302]3 years ago

6 0

$g(x) = x ^{2} + 2x - 1 = {x}^{2} + 2x - 1 + 2 - 2 = \\ = (x + 1) {}^{2} - 2$

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HELP ASAP PLZZZZZZ

malfutka [58]

B because the electrons are moving to create a new form. Chemical energy is changing the form.

Hope this helps.

5 0

3 years ago

A flat coil of wire consisting of 20 turns, each with an area of 50 cm2, is positioned perpendicularly to a uniform magnetic fie

Scilla [17]

Answer:

Induced current, I = 0.5 A

Explanation:

It is given that,

number of turns, N = 20

Area of wire, $A=50\ cm^2=0.005\ m^2$

Initial magnetic field, $B_i=2\ T$

Final magnetic field, $B_f=6\ T$

Time taken, t = 2 s

Resistance of the coil, R = 0.4 ohms

We know that due to change in magnetic field and emf will be induced in the coil. Its formula is given by :

$\epsilon=\dfrac{-d\phi}{dt}$

Where

$\phi=BA$

$\epsilon=\dfrac{-d(NBA)}{dt}$

$\epsilon=NA\dfrac{B_f-B_i}{t}$

$\epsilon=20\times 0.005\times \dfrac{6-2}{2}$

$\epsilon=0.2\ V$

Let I is the induced current in the wire. It can be calculated using Ohm's law as :

$\epsilon=I\times R$

$I=\dfrac{\epsilon}{R}$

$I=\dfrac{0.2}{0.4}$

I = 0.5 A

So, the magnitude of the induced current in the coil is 0.5 A. Hence, this is the required solution.

5 0

3 years ago

A speeding motorist traveling 120 km/h passes a stationary police officer. The officer immediately begins pursuit at a constant

Lelu [443]

120 km/h = 33.33 m/s 10.8 km/h/s = 3 m/s/s the motorist will cover a distance of 33.33 m x T(seconds) the police officer will cover a distance of 1/2 (3) T^2 they will be at the same point when 33.33T = 1.5 T^2 33.33 = 1.5 T 3T = 66.66 T = 22.22 seconds it will take the officer 22.22 seconds to catch the motorist. the officer will be moving V=AT = 3m/s x 22.22 seconds = 66.66 m/s almost 240 km/h (239.976 km/h)

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4 years ago

Read 2 more answers

Which pattern do you find easy to conduct?

Brut [27]

The numbers represent the beats in each measure
The arrows represent the direction of movement between beats
The word out represents a movement away from your body.
The word in represents a movement towards the center of your body.

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3 years ago

Which of these examples is NOT a functional group?

madam [21]

Answer: Salt

Explanation: Alkenes, esters, and salts are all functional groups either containing or being functional groups.

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3 years ago