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3 years ago

Which describes a reflected image in a plane mirror

Physics

2 answers:

Lerok [7]3 years ago

8 0

Answers

same distance from the mirror as the object

same size

lateral inversion

Explanation

The image formed by a plane mirror is formed at equal distance from the mirror as the object is.

The size of the image is the same as the size of the object.

The image is laterally inverted. This means that, when a person lifts his right hand, his or her image will raise it's left hand.

PtichkaEL [24]3 years ago

7 0

Answer:

same distance from the mirror as the object and inverted from side to side

Explanation:

gradpoint answer

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antoniya [11.8K]

Answer:

$r=5.278\times 10^{-4}\ m$

Explanation:

Given that:

magnetic field intensity, $B=0.07\ T$

kinetic energy of electron, $KE=1.2\ eV= 1.2\times 1.6\times 10^{-19}\ J= 1.92\times 10^{-19}\ J$

we have mass of electron, $m=9.1\times 10^{-31}\ kg$

Now, form the mathematical expression of Kinetic Energy:

$KE= \frac{1}{2} m.v^2$

$1.92\times 10^{-19}=0.5\times 9.1\times 10^{-31}\times v^2$

$v^2=4.2198\times 10^{11}$

$v=6.496\times 10^6\ m.s^{-1}$

from the relation of magnetic and centripetal forces we have the radius as:

$r=\frac{m.v}{q.B}$

$r=\frac{9.1\times 10^{-31}\times 6.496\times 10^6 }{1.6\times 10^{-19}\times 0.07}$

$r=5.278\times 10^{-4}\ m$

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3 years ago

The speed of a nerve impulse in the human body is about 100 m/s. If you accidentally stub you toe in the dark, estimate the time

vodomira [7]

Answer:

0.02 s

Explanation:

Take the (+x) direction to be up.

The average velocity v during a time interval Δt is the displacement Δx divided by Δt.

v=Δx/Δt

=x_f-x_i/t_f-t_i (1)

We assume that your height is 1.6m

Solving [1]

Δt=Δx/v

= 0.02 s

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ruslelena [56]

Answer:

Explanation:

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