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Komok [63]
3 years ago
12

Please Help!!!!! According to the graph which figure shows the average speed of the horse that won the race

Physics
1 answer:
Vikentia [17]3 years ago
5 0

Average speed will be given by

v_{avg} = \frac{total distance}{total time}

here from graph we know that

total distance = 300 m

total time taken = 15 s

now from above equation we know that

v_{avg} = \frac{300 m}{15 s}

v_{avg} = 20 m/s

so average speed will be 20 m/s

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A student performs an activity to study how electric current flows in a circuit. The student constructs two different circuits,
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The rotating loop in an AC generator is a square 10.0 cm on each side. It is rotated at 60.0 Hz in a uniform field of 0.800 TO.
Genrish500 [490]

Answer:

Explanation:

Given a square side loop of length 10cm

L=10cm=0.1m

Then, Area=L²

Area=0.1²

Area=0.01m²

Given that, frequency=60Hz

And magnetic field B=0.8T

a. Flux Φ

Flux is given as

Φ=BA Sin(wt)

w=2πf

Φ=BA Sin(2πft)

Φ=0.8×0.01 Sin(2×π×60t)

Φ=0.008Sin(120πt) Weber

b. EMF in loop

Emf is given as

EMF= -N dΦ/dt

Where N is number of turns

Φ=0.008Sin(120πt)

dΦ/dt= 0.008×120Cos(120πt)

dΦ/dt= 0.96Cos(120πt)

Emf=-NdΦ/dt

Emf=-0.96NCos(120πt). Volts

c. Current induced for a resistance of 1ohms

From ohms law, V=iR

Therefore, Emf=iR

i=EMF/R

i=-0.96NCos(120πt) / 1

i=-0.96NCos(120πt) Ampere

d. Power delivered to the loop

Power is given as

P=IV

P=-0.96NCos(120πt)•-0.96NCos(120πt)

P=0.92N²Cos²(120πt) Watt

e. Torque

Torque is given as

τ=iL²B

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8 0
2 years ago
Can anyone ask me how many protons, neutrons, and electrons I need and just explain where to put them.​
Aliun [14]

Answer:

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and on the 2nd shell there will be only one electron

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Explanation:

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8 0
3 years ago
A sound source producing 1.00 kHz waves moves toward a stationary listener at one-half the speed of sound.
SIZIF [17.4K]

Answer:

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Explanation:

Using

a) f = f0((c+vr)/(c+vs))

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b) f = f0((c+vr)/(c+vs))

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5 0
3 years ago
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