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kow [346]
3 years ago
15

An electron is travelling East through a magnetic field directed South. In which direction is the force on the electron?

Physics
1 answer:
shutvik [7]3 years ago
5 0

Answer:

Vertically upwards

Explanation:

Fleming's left hand rule: it states taht when we spread our fore finger, middle finger and thumb in such a way that they are mutually perpendicular to each other, theN thumb indicates the direction of force, fore finger indicates the direction of magnetic field and the middle finger indicates the direction of current.

So according to this rule the direction of force is vertically upwards.

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An 85-kg rock climber, when reaching the summit, built up 250,000 J of gravitational potential energy. How high did the climber
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3 0
3 years ago
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The conducting path between the right hand and the left hand can be modeled as a 9.0-cm-diameter, 140-cm-long cylinder. The aver
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Answer:

The potential difference is 121.069 V

Solution:

As per the question:

Diameter of the cylinder, d = 9.0 cm = 0.09 m

Length of the cylinder, l = 40 cm = 1.4 m

Average Resistivity, \rho = 5.5\ \Omega-m

Current, I = 100 mA = 0.1 A

Now,

To calculate the potential difference between the hands:

Cross- sectional Area of the Cylinder, A = \pi (\frac{d}{2})^{2} = 6.36\times 10^{- 3}\ m^{2}

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\rho = R\frac{A}{l}

R = \rho \frac{l}{A}

R = 5.5\times \frac{1.4}{6.36\times 10^{- 3}} = 1210.69\ \Omega

Now, using Ohm's Law:

V = IR

V = 0.1\times 1210.69 = 121.069\ V

4 0
3 years ago
One of planets known to have rings is<br> A. Saturn <br> B. Venus <br> C. Mars<br> D. Mercury
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A car travelling at 55 mph for three and half hours would have travelled<br> how many miles
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Answer:

192.5 miles

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