3 years ago

PLEASE HELP WILL GIVE BRANLIEST, EXTRA POINTS!

Physics

1 answer:

sashaice [31]3 years ago

6 0

Answer:

C. Try an element in the same group as lithium.

Explanation:

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If an engine does 660 J of work in 10 seconds, its average power is ...

givi [52]

Answer:

66w

Explanation:

p=w/t

p=660/10

p=66

prolly a bad explanation but hope it helps...

4 0

2 years ago

A 123-turn circular coil of radius 2.41 cm is immersed in a uniform magnetic field that is perpendicular to the plane of the coi

klasskru [66]

Answer:

67.44 V

Explanation:

Number of turns N =123

Radius = 2.41 cm =0.0241 m

The magnetic field strength increases from 50.9 T to 96.3 T so change in magnetic field dB = 96.3-50.9=45.4 T

Time interval dt = 0.151 sec

We know that the induced emf $e=-NA\frac{dB}{dt}$

Area $A=\pi r^2=3.14\times 0.0241^2=1.8237\times 10^{-3}m^2$

Putting all these values in emf equation $e=-123\times 1.8237\times 10^{-3}\times \frac{45.4}{0.151}=-67.44\ V$ here negative sign indicates that it opposes the cause due to which it is produced

8 0

3 years ago

Someone answer pls !!!!

astra-53 [7]

Answer:

My best guess would be B due to the fact of friction in a simple machine

7 0

3 years ago

Study the image of a circuit.

IRISSAK [1]

B is the correct answer . That make the most sense

5 0

3 years ago

Read 2 more answers

you are hiking along a river and see a tall tree on thhe opposite bank. You measure the angle of elevation of the top of the tre

Sidana [21]

Answer:

Explanation:

Let the height of the tree is y and the distance of tree from point B is x.

According to the diagram

$tan61 = \frac{y}{x}$

x = 0.55 y ..... (1)

$tan49.5 = \frac{y}{50+x}$

(50 + 0.55y) 1.17 = y ..... from equation (1)

58.5 + 0.644 y = y

0.356 y = 58.5

y = 164.3 ft

3 0

3 years ago