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
Bingel [31]
3 years ago
8

Qué tipo de sistema es una caja de leche chocolatada sin abrir? Ana considera que es un sistema aislado y en cambio Martina opin

a que es un sistema cerrado. ¿Cuál de las dos tiene razón y por qué? ¿Y después de tomarla?
Physics
1 answer:
Mice21 [21]3 years ago
5 0

Answer:

The box contains a finite number of chocolates making it a closed system since this number does not change.

After taking the box and opening it to eat some chocolates it becomes an open system that can exchange chocolates with the medium

Explanation:

In thermodynamics an isolated system is a system in which no heat is exchanged with the medium, a closed system is a system where no particular one is exchanged with the surrounding medium.

In this case, the box can exchange heat since the cardboard walls are not insulating, so it is not an insulated system.

The box contains a finite number of chocolates making it a closed system since this number does not change.

After taking the box and opening it to eat some chocolates it becomes an open system that can exchange chocolates with the medium

You might be interested in
You are trying to find the amount of heat transferred between two substances. In order to do this, you plan
Zarrin [17]

Answer:

do you have kids ?

Explanation:

i am a 14 year old girl

7 0
2 years ago
How tall would a tower need to be if the period of a pendulum were 30. seconds
Virty [35]
We use the following expression

T = 2*pi *sqrt(l/g)

Where T is the period of the pendulum

l is the length of the pendulum

and g the acceleration of gravity

We solve for l

l = [T/2*pi]² *g = [30s/2*pi]²* 9.8 [m/s²] = 223.413 m

The tower would need to be at least 223.413 m high
4 0
3 years ago
A boxer hits punching bag and gives it a change in momentum of 12 kg multiplied by m divided by s over 7.0ms what is the magnitu
mr_godi [17]

Answer: 1700

Explanation:

8 0
2 years ago
At what distance between two objects would you have the greatest gravitational force
Alla [95]

The gravitational force is inversely proportional to the
square of the distance between their centers.  So the
force is greatest when the distance is zero.

6 0
3 years ago
The engine in an imaginary sports car can provide constant power to the wheels over a range of speeds from 0 to 70 miles per hou
puteri [66]

Answer:

t=5.3687\ s  is the time taken by the car to accelerate the desired range of the speed from zero at full power.

Explanation:

Given:

Range of speed during which constant power is supplied to the wheels by the car is 0\ mph\ to\ 70\ mph.

  • Initial velocity of the car, v_i=0\ mph
  • final velocity of the car during the test, v_f=32\ mph=14.3052\ m.s^{-1}
  • Time taken to accelerate form zero to 32 mph at full power, t=1.2\ s
  • initial velocity of the car, u_i=0\ mph
  • final desired velocity of the car, u_f=64\ mph=28.6105\ m.s^{-1}

Now the acceleration of the car:

a=\frac{v_f-v_i}{t}

a=\frac{14.3052-0}{1.2}

a=11.921\ m.s^{-1}

Now using the equation of motion:

u_f=u_i+a.t

64=0+11.921\times t

t=5.3687\ s is the time taken by the car to accelerate the desired range of the speed from zero at full power.

8 0
3 years ago
Other questions:
  • Which of the following is an example of pure research? Creating new elements to study their properties Producing plastics that a
    12·1 answer
  • How does the heat from sun reach earth
    14·1 answer
  • What type of motor operates at a constant steady-state speed regardless of the load?
    8·1 answer
  • The value of x in the diagram is ___ °.<br><br> 40<br> 50<br> 90<br> 180
    9·1 answer
  • What is the first step dealing with an injured relationship
    10·2 answers
  • In your own words describe hot spot and the formation of the Hawaiian island
    11·1 answer
  • 2 Why don't all communication devices function off the same wavelength?
    7·1 answer
  • A 12-kg hammer strikes a nail at a velocity of and comes to rest in a time interval of 8.0 ms. (a) What is the impulse given to
    9·1 answer
  • Two examples of inventions that increase friction?
    10·1 answer
  • As a 3.0 kg bucket is being lowered into a 10 m deepwell, starting from top, the tension in the rope is 9.8 N. theacceleration o
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!