1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
belka [17]
3 years ago
8

Alberto y David roban un coche y huyen a 90 km/h. A los 10 minutos, la policía recibe

Physics
1 answer:
Alborosie3 years ago
8 0

Answer:

Explanation:

Given that,

Albert and David steal a car and run at

Vt = 90km/hr

Vt = 90×1000/3600 = 25m/s

After 10minutes

t = 10×60 = 600seconds

The police are inform and they started chasing at

Vp = 120km/hr

Vp = 120 × 1000/3600 = 33.33m/s

A. The thief have been running for 1200seconds before the police start

So, the distance between the thief and the police at the start can be determine using

Speed = distance / time taken

So, distance = speed × time taken

d = Vt × t

d = 25 × 600

d = 15,000m

d = 15 km

So, the thief are 15km apart from the thief after 10 minutes

B. Let assume we want to know when police will catch up with the thief.

Now,

The thief is traveling at 25m/s

And police = 33.33m/s

The distance apart is 15,000m

So, let assume the police will catch the thief at distance 'do, then the thief had already travelled 15,000, so the thief will have d - 15000. Note that they will spend the same time in this reference.

So, let find the time the police will traveled 'd'

Speed = distance / time

distance = speed of police × time

d = Vp × t

d = 33.33t...........equation 1

Also, the thief

Distance = speed of thief × time

15,000-d = 25 × t.........equation 2

Substitute equation 1 into 2

15,000 - 33.33t = 25t

15,000 = 25t + 33.33t

15,000 = 58.33t

t = 257.14 seconds

So, it will take the police a total of 600second before they were told and the time 257.14 second when they caught the thief.

How long will it have been after the robbery?

Total time after robbery before the car was recovered is

t = 600 + 257.14

t = 857.14 seconds

In Spanish

Dado que,

Albert y David roban un auto y corren a

Vt = 90 km / h

Vt = 90 × 1000/3600 = 25 m / s

Después de 10 minutos

t = 10 × 60 = 600 segundos

La policía está informada y comenzaron a perseguir a

Vp = 120 km / h

Vp = 120 × 1000/3600 = 33.33 m / s

A. El ladrón ha estado corriendo durante 1200 segundos antes de que comience la policía.

Entonces, la distancia entre el ladrón y la policía al inicio se puede determinar usando

Velocidad = distancia / tiempo necesario

Entonces, distancia = velocidad × tiempo tomado

d = Vt × t

d = 25 × 600

d = 15,000m

d = 15 km

Entonces, el ladrón está a 15 km del ladrón después de 10 minutos

B. Supongamos que queremos saber cuándo la policía alcanzará al ladrón.

Ahora,

El ladrón viaja a 25 m / s.

Y policía = 33.33m / s

La distancia es de 15,000m.

Entonces, supongamos que la policía atrapará al ladrón a distancia 'do, entonces el ladrón ya había viajado 15,000, por lo que el ladrón tendrá d - 15000. Tenga en cuenta que pasarán el mismo tiempo en esta referencia.

Entonces, busquemos el tiempo en que la policía viajará 'd'

Velocidad = distancia / tiempo

distancia = velocidad de la policía × tiempo

d = Vp × t

d = 33.33t ........... ecuación 1

Además, el ladrón

Distancia = velocidad del ladrón × tiempo

15,000-d = 25 × t ......... ecuación 2

Sustituye la ecuación 1 en 2

15,000 - 33.33t = 25t

15,000 = 25t + 33.33t

15,000 = 58.33t

t = 257.14 segundos

Entonces, le tomará a la policía un total de 600 segundos antes de que se les diga y el tiempo 257.14 segundos cuando atraparon al ladrón.

¿Cuánto tiempo habrá pasado después del robo?

El tiempo total después del robo antes de recuperar el automóvil es

t = 600 + 257,14

t = 857.14 s

You might be interested in
Which bulbs would be on and or off if :
insens350 [35]
Bulbs c and b would still be screwed in if they were in to begin with and bulbs A, D, and E. would be unscrewed
6 0
3 years ago
Read 2 more answers
Sort the resources into the correct category: renewable or nonrenewable.
alex41 [277]

Answer:

forests

renewable resources

nonrenewable resources

water

iron

oll

wind

silver

Renewable resources- Water

Forests

Wind

Non-renewable resources-

Oil

Iron

Silver

5 0
3 years ago
Read 2 more answers
A 2.2 m long simple pendulum oscillates with a period of 4.8 s on the surface of unknown planet. What is the surface gravity of
Vsevolod [243]

Answer:

g=3.76\ m/s^2

Explanation:

Given that,

The length of a simple pendulum, l = 2.2 m

The time period of oscillations, T = 4.8 s

We need to find the surface gravity of the planet. The time period of the planet is given by the relation as follows :

T=2\pi \sqrt{\dfrac{l}{g}} \\\\T^2=4\pi ^2\times \dfrac{l}{g}\\\\g=\dfrac{4\pi ^2 l}{T^2}

Put all the values,

g=\dfrac{4\pi ^2 \times 2.2}{(4.8)^2}\\\\=3.76\ m/s^2

So, the value of the surface gravity of the planet is equal to 3.76\ m/s^2.

7 0
3 years ago
State one difference between solar cells and solar heating systems?
seropon [69]
Solar photovoltaic cells, or solar panels, are arrays of silicon cells that can transforms light radiation into electricity. Solar heating system absorbs the heat from the sun and either transform it into electricity through s generator or uses the energy to heat homes and water.
4 0
3 years ago
Read 2 more answers
A 6.0 kg bowling ball moving at 3.5m/s to the right makes a collision, head-on, with a stationary 0.70 kg bowling pin. If the ba
devlian [24]

Answer:

The velocity of the pin will be 6.26 m/s in the right direction.

Explanation:

Let's use the momentum conservation equation.

p_{i}=p_{f}

Initially, we have:

p_{i}=m_{b}*v_{ib}

Where:

  • m(b) is the ball mass
  • v(ib) is the initial velocity of the ball

Now, the final momentum will be:

p_{f}=m_{b}*v_{fb}+m_{p}*v_{fp}

Where:

  • m(p) is the pin mass
  • v(fb) is the final velocity of the ball
  • v(fp) is the final velocity of the pin

Then, using the equation of the conservation we have:

m_{b}*v_{ib}=m_{b}*v_{fb}+m_{p}*v_{fp}

6*3.5=6*2.77+0.7*v_{fp}

6*3.5=6*2.77+0.7*v_{fp}

v_{fp}=6.26 m/s

Therefore the velocity of the pin will be 6.26 m/s in the right direction.

I hope it helps you!

4 0
3 years ago
Other questions:
  • C.
    7·1 answer
  • A volleyball is spiked so that its incoming velocity of +2.09 m/s is changed to an outgoing velocity of -24.6 m/s. The mass of t
    6·1 answer
  • A bike travels 4 miles in half an hour at what speed
    12·2 answers
  • IE is the energy required to remove an electron from an atom. As atomic radius increases, the valence electrons get farther from
    10·1 answer
  • Low-frequency red light is used in dark rooms because it does not expose the film. This is because the red light has a low
    14·2 answers
  • A spherical balloon is partially blown up and its surface area is measured. More air is then added, increasing the volume of the
    13·1 answer
  • In a video game a flying coconut moves at a cost of the last few 20 m/s a positive direction the coconut he stops going to move
    7·1 answer
  • The speed of light will change in which of the following situations?
    5·1 answer
  • A typical laboratory centrifuge rotates at 4000 rpm. Testtubes have to be placed into a centrifuge very carefully because ofthe
    12·1 answer
  • What is the frequency of a wave that has a period of .25 s
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!