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2 years ago

Njjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjj

Physics

2 answers:

mario62 [17]2 years ago

7 0

Explanation:

Thanks for the points........

kolbaska11 [484]2 years ago

4 0

Answer:

njjjjjxndnxu xjdjd xkc xjencjf

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The rotor in a certain electric motor is a flat, rectangular coil with 80 turns of wire and dimensions 2.50 cm by 4.00 cm . The

andreyandreev [35.5K]

The average power of the motor is 0.153 Watt

To find the average power, the given values are,

No .of turns of the wire = 80

Dimensions is given as, 2.50 cm by 4.00 cm

Magnetic field = 0.800 T.

current = 10 mA.

Angular speed = 3.60 ×10³ rev/min

What is average power?

Average power is defined as the ratio of total work done by the body to the total time taken by the body.

Average power P avg = W / ΔT Watt

W - Work in One revolution

For first one half revolution,

W = 2 NIAB

= 2× 80×10×10⁻³×0.0250×0.040×0.800× Sin 90°

= 2 × 6.4 × 10 ⁻⁴

= 1.2 × 10⁻³ J

For full revolution,

W = 2 × 1.2 × 10⁻³ J

= 2.56 × 10⁻³ J

Calculating power,

Time for one revolution is Δt = 60/3600 = 1/60s

Average power = W / Δt

= 2.56 x 10⁻³ / (1/60)

= 0.153 Watt.

The average power of the motor is 0.153 Watt.

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1 year ago

. A 2.0-m wire carries a current of 15 A directed along the positive x axis in a region where the magnetic field is uniform and

Lady bird [3.3K]

Answer:

The resulting magnetic force on the wire is -1.2kN

Explanation:

The magnetic force on a current carrying wire of length 'L' with current 'I' in a magnetic field B is

F = I (L*B)

Finding (L * B) , where L = (2, 0, 0)m , B = (30, -40, 0)

L x B = $\left[\begin{array}{ccc}i&j&k\\2&0&0\\30&-40&0\end{array}\right]$ = (0, 0, -80)

we can now solve

F = I (L x B) = I (-80)

F = -1200 kmN

F = -1200 kN * 10⁻³

F = -1.2kN

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The sun delivers an average power of 1.499 w/m2 to the top of neptune's atmosphere. find the magnitudes of vector e max and vect

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Question 6

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Limestone and dolomite are the rocks present in the locations which leads to the formation of caves.

<h2>Formation of caves</h2>

The type of rocks that once existed in these locations are limestone and dolomite whereas the pH of the nearby groundwater is slightly acidic which is responsible for the formation of caves. Caves are formed by the dissolution of limestone due to acid rain.

Rainwater reacts with carbon dioxide from the air and percolates through the soil, which turns into a weak acid. This slowly dissolves out the limestone which become turn to form caves so we can conclude that Limestone and dolomite are the rocks present in the locations which leads to the formation of caves.

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Increases exponentially is your correct answer

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