3 years ago

Umnotho usemhlabathini amaphuzu

Physics

1 answer:

nevsk [136]3 years ago

6 0

Answer:

what :D

Explanation:

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On the map red bands represent the earthquake

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Why did the lemon battery work and how many volts does one produce?

anyanavicka [17]

Answer:

the third one

Explanation:

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Car a is heading north with a velocity of 14 m/s. car b is traveling north also, with a velocity of 19 m/s. what is the relative

kicyunya [14]

a.) Relative velocity = velocity of car B - velocity of car A
= 19 - 14
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3 years ago

Read 2 more answers

A motorist is traveling at 20 m/s. He is 60 m from a stoplight when he sees it turn yellow. Is reaction time, before stepping on

Gnesinka [82]

V₀ = V₁ + 2ax
V₀ = final velocity which is 0 m/s
V₁ = initial velocity which is 20 m/s
x = distance which is 60-(0.5 x 20) =50m
this is because his reaction time is 0.5 sec so he traveled 10m before stepping on the break paddle.

a= (V₀-V₁) / 2x
= (0-20) / 2*50
= -0.2m/s
the negative is because it is a deceleration speed hence it is 0.2m/s

5 0

3 years ago

A proton, moving in a uniform magnetic field, moves in a circle perpendicular to the field lines and takes time T for each circl

xxMikexx [17]

Answer:

option (B)

Explanation:

mass of proton, m = m

charge of proton, q = e

Time period, T = T

Initially the speed of proton is v.

The time period of the proton when it is moving in magnetic field perpendicular to the direction of magnetic field is given by

$T=\frac{2\pi r}{v}$

Where, r be the radius of circular path.

The relation between r and the speed v is given by

$r=\frac{mv}{Bq}$

Where, B be the strength of magnetic field. Substitute this value of r in the expression of time period

$T=\frac{2\pi mv}{Bqv}=\frac{2\pi m}{Bq}$

Here, we observe that the expression for the time period is independent to v and r so, as we change the velocity, the time period remains same.

6 0

3 years ago

Umnotho usemhlabathini amaphuzu​

Umnotho usemhlabathini amaphuzu