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sergij07 [2.7K]
3 years ago
5

What is the work of a 520n student walking a distance of 3 m

Physics
1 answer:
Wewaii [24]3 years ago
8 0

Answer:

W=1560 Joules

Explanation:

Use W=fd

so, W=520N(3m)= 1560J

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Direction of current in a solenoid depends on the direction of magnetic field
cestrela7 [59]

Explanation:

Its direction depends on the direction of the current. ... When the current flows through the solenoid in the clockwise direction, then the magnetic lines of force inside or center of the coil will be along the axis inwards according to Fleming's right hand rule.

3 0
3 years ago
A satellite circles the earth in an orbit whose radius is six times the earth's radius. The earth's mass is 5.98 1024 kg, and it
makkiz [27]

Answer:

The period of the satellite is 12.05 s.

Explanation:

The period of the satellite can be determined by;

T = \sqrt{\frac{4\pi ^{2} r^{2}  }{GM} }

where: T is the period, r is the radius of the orbit, G is the gravitation constant and M is the mass of the Earth.

Given that: r = 6 x (6.38 x 10^{6}) = 38.28 x 10^{6} m, M = 5.98 x  10^{24} kg, G = 6.673 x 10^{-11} Nm^{2}/ kg^{2}.

Therefore,

T = \sqrt{\frac{4*(\frac{22}{7} )^{2} (38.28*10^{6}) ^{2}  }{6.673*10^{-11} *5.98*10^{24} } }

  = \sqrt{\frac{5.79*10^{16} }{3.99*10^{14} } }

  = \sqrt{145.113}

  = 12.0463

T = 12.05 s

The period of the satellite is 12.05 s.

5 0
3 years ago
Objects through which light can pass are referred to as dash objects​
Sergio [31]

Answer:

Those objects are called transparent objects...

Explanation:

If only some light can pass through them ,it is called translucent....

If no light can pass through them ,it is called opaque.

3 0
3 years ago
An electron is moving directly toward you in a horizontal path when it suddenly enters a uniform magnetic field that is either v
blagie [28]

Answer:

To your left

Explanation:

The direction of the force exerted on charged particle due to a magnetic field is given by the right-hand-rule, where:

- The index finger indicates the direction of motion of the electron

- the middle finger gives the direction of the magnetic field

- the thumb gives the direction of the force if the particle is positively charged - otherwise, the direction is reversed

in this case, we have an electron (so, a negatively charged particle):

- The direction of motion (index finger) is horizontal, toward you

- The electron begins to curve upward as it enters the field, so this means that the force exerted on the electrons is upward --> the thumb must point downward (because the electron is negatively charged)

- The index finger gives us the direction of the magnetic field: therefore, to your left.

3 0
3 years ago
A jet lands on an aircraft carrier at 140 mi/h. What is its acceleration if it stops in 2.0 seconds?
sergejj [24]

Answer:

Acceleration, a=-31.29\ m/s^2

Explanation:

It is given that,

Initial speed of the aircraft, u = 140 mi/h = 62.58 m/s

Finally, it stops, v = 0

Time taken, t = 2 s

Let a is the acceleration of the aircraft. We know that the rate of change of velocity is called acceleration of the object. It is given by :

a=\dfrac{v-u}{t}

a=\dfrac{0-62.58}{2}

a=-31.29\ m/s^2

So, the acceleration of the aircraft is 31.29\ m/s^2 and the car is decelerating. Hence, this is the required solution.

4 0
3 years ago
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