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3 years ago

P wave for 100km time= distance/speed , T=100km/6.1km/s

Physics

1 answer:

shutvik [7]3 years ago

8 0

I dont know what you are asking sorry can u elaborate

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The total amount of electrical energy used by a

tia_tia [17]

The amount of electrical energy used by the television is given by:

$E=Pt$

where P is the power of the device and t is the time.

The power of the television is P=315 W, while the total time is

$t=30.0 min \cdot 60 =1800 s$

If we substitute these numbers into the formula, we find the energy:

$E=Pt=(315 W)(1800 s)=5.67 \cdot 10^5 J$

so, the correct answer is

(1) 5.67 × 10^5 J

7 0

3 years ago

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Help with TEST pls!!

Westkost [7]

Answer:

12. D.

13. C.

14. H.

15. F.

16. G.

17. A.

18. D.

19. B.

20. C.

Hope this helps :)

Explanation:

8 0

3 years ago

A submersible pump is put under the water at the bottom of a well and is used to push water up through a pipe. What minimum outp

Fantom [35]

Answer:

The Required pressure for this situation is P= 735000Pa

Explanation:

In Determining the required pressure in this situation we use two equations

First one is

F = mg = (ρhA)g

And Second one is

P = $F/A$ = (ρhAg)/A Where P is pressure

We get

P = ρhg

since g = 9.8 m/s and h is given that is 75m and ρ = $1000 kg/m^3$

P = (9.8 m/s)( $1000 kg/m^3$ )(75) we get

P = 735000 Pa

6 0

4 years ago

A circular coil of radius 5.0 cm and resistance 0.20 Ω is placed in a uniform magnetic field perpendicular to the plane of the c

DedPeter [7]

Answer:

The induced current in the coil at the time 2 s is 0.00263 A

Explanation:

The equation for induced emf is equal to:

$\epsilon =-\frac{d}{dt} (BAcos\theta )$

Where

B = magnetic field

A = area

θ = angle

$\epsilon =-Acos0\frac{d}{dt} B\\\epsilon =-(\pi r^{2} )\frac{d}{dt} (0.5e^{-0.2t} )\\\epsilon =0.1 (\pi r^{2} )e^{-0.2t}$

For t = 2 s

$\epsilon =0.1*\pi *0.05^{2} *e^{-0.2*2} =5.26x10^{-4} V$

The induced current is:

$I=\frac{\epsilo }{R} =\frac{5.26x10^{-4} }{0.2} =0.00263A$

3 0

3 years ago

In an electric motor, periodically changing the direction of current in the electromagnet can cause the axle to spin because

loris [4]

Answer:

The magnetic field reverses direction.

Explanation:

5 0

3 years ago

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