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andriy [413]
4 years ago
5

Dibujar un triángulo,dividelo en tres partes,en la parte de arriba ponga la D = a la distancia,en la parte de abajo a la izquier

da escriba la letra S= a la velocidad,en la otra parte a su derecha escriba la letra T=al tiempo.
.Ejercicio:
Un tren viaja a 1,250 Km en 3 horas. Calcular la velocidad
.Datos:
D =1,250 Km
T =3 horas
S =?
S = 1,250Km/3 h
S =417 km/h
Physics
1 answer:
natka813 [3]4 years ago
5 0

Answer:

srry dont speak spanish

Explanation:

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I NEED HELP ASAP<br>please please please​
raketka [301]

Answer:

B AND D

HOPE ITS HELF FUL .........

6 0
3 years ago
Read 2 more answers
Vector A⃗ points in the positive y direction and has a magnitude of 12 m. Vector B⃗ has a magnitude of 33 m and points in the ne
gavmur [86]

vector A has magnitude 12 m and direction +y

so we can say

\vec A = 12 \hat j

vector B has magnitude 33 m and direction - x

\vec B = -33 \hat i

Now the resultant of vector A and B is given as

\vec A + \vec B = 12 \hat j - 33 \hat i

now for direction of the two vectors resultant will be given as

\theta = tan^{-1}\frac{12}{-33}

\theta = 160 degree

so it is inclined at 160 degree counterclockwise from + x axis

magnitude of A and B will be

R = \sqrt{A^2 + B^2}

R = \sqrt{12^2 + 33^2} = 35.11 m

so magnitude will be 35.11 m

6 0
3 years ago
At what speed, as a fraction of c , is a particle's total energy twice its rest energy
WINSTONCH [101]
The rest energy of a particle is
E_0=m_0 c^2
where m_0 is the rest mass of the particle and c is the speed of light.

The total energy of a relativistic particle is
E=mc^2 =  \frac{m_0 c^2}{ \sqrt{1- \frac{v^2}{c^2} } }
where v is the speed of the particle.

We want the total energy of the particle to be twice its rest energy, so that
E=2E_0
which means:
\frac{m_0c^2}{ \sqrt{1- \frac{v^2}{c^2} } }=2m_0 c^2
\frac{1}{ \sqrt{1- \frac{v^2}{c^2} } }=2
From which we find the ratio between the speed of the particle v and the speed of light c:
\frac{v}{c}=  \sqrt{1- (\frac{1}{2})^2 }  =0.87
So, the particle should travel at 0.87c in order to have its total energy equal to twice its rest energy.
3 0
3 years ago
What was the name of the first living being to be put into orbit?.
Oduvanchick [21]
The first living being to make an orbital spaceflight around the Earth was the dog Laika, aboard the Soviet spacecraft Sputnik 2 on 3 November 1957.
8 0
2 years ago
To rid the body of wastes, including excess water and salts" is the purpose of what human body system? A) Digestive B) Excretory
Verizon [17]
Digestive I believe.


5 0
4 years ago
Read 2 more answers
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