3 years ago

A train travels 100 km east and then 75 km west. What is the magnitude of its displacement?

Physics

1 answer:

tamaranim1 [39]3 years ago

6 0

Answer:

displacement = 100 - 75 = 25 km east

You might be interested in

• La longitud de un alambre de un sujetador de papel (clip) extendido mide 86 mm. ¿Cuántos sujetadores se pueden obtener de un r

kari74 [83]

Answer:

34883.7

Explanation:

Primero hay que convertir las dos unidades a la misma unidad-cm-

3km- 300000 cm

86mm- 8.6mm

Después hay que dividir

300000/8.6= 34883.7209302 ~ 34883.7

7 0

2 years ago

What’s the most distant object in the solar system

Scrat [10]

Answer:

pluto

Explanation:

i had the same question

7 0

3 years ago

Read 2 more answers

Which of the following statements is true?A. Radiant energy is the same as sound waves. B. Radiant energy is a form of potential

svetoff [14.1K]

D.Radiant energy does not require a medium through which to travel.

5 0

3 years ago

Read 2 more answers

The quantity of charge q (in coulombs) that has passed through a surface of area 2.00 cm2 varies with time

Makovka662 [10]

Explanation:

We have,

Surface area, $A=2\ cm^2=0.0002\ m^2$

The current varies wrt time t as :

$q(t) = 4t^3 + 5t + 6$

(a) At t = 2 seconds, electrical charge is given by :

$q(t) = 4t^3 + 5t + 6\\\\q(2) = 4(2)^3 + 5(2) + 6\\\\q=48\ C$

(b) Current is given by :

$I=\dfrac{dq}{dt}\\\\I=\dfrac{d(4t^3 + 5t + 6)}{dt}\\\\I=12t^2+5$

Instantaneous current at t = 1 s is,

$I=12(1)^2+5=17\ A$

Current density is given by electric current per unit area.

$J=\dfrac{I}{A}\\\\J=\dfrac{(12t^2+5)}{0.0002}\\\\J=5000(12t^2+5)\ A/m^2$

Therefore, it is the required explanation.

7 0

3 years ago

20. The triple-point of water occurs at 273.16 K (0.01 °C) and a vapor pressure of 0.0060373 atm). At this point water can be __

Sunny_sXe [5.5K]

Answer:

E i think.

Explanation:

5 0

2 years ago