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
vekshin1
3 years ago
11

A system undergoes a two-step process. In the first step, the internal energy of the system increases by 218 J when 170 J of wor

k is done on the system. In the second step, the internal energy of the system increases by 107 J when 172 J of work is done on the system.
1. For the overall process, find the heat?
2. What type of process is the overall process? Explain.
Physics
1 answer:
hammer [34]3 years ago
8 0

Answer:

1) Q total = Q1 +Q2 = 48 J + (-65J) = (-17J)

2) since the total heat exchanged is negative, the overall process is a cooling process

Explanation:

According to the first law of thermodynamics

ΔE = Q - W

where ΔE= change in internal energy , Q = heat and W= work done by the system to the surroundings

in the first step

Q1 = ΔE + W = 218 J  + (-170 J) = 48 J

in the second step

Q2 = ΔE + W = 107 J  + (- 172 J) = -65 J

the total heat is

Q total = Q1 +Q2 = 48 J + (-65J) = (-17J)

since the total heat exchanged is negative, the overall process is a cooling process .

You might be interested in
Compare and contrast the velocity at which X-rays and radio waves travel
posledela
<span> radio: longitudinal, light: transverse. x rays are produced by voltage and they are more penetrating Gamma Xrays Ultrasound Visible light Infrared Radiowaves. that is the order. colours are different since they absorb part of the colour spectrum & emit the rest </span>
6 0
4 years ago
Read 2 more answers
5 aplicaciones de la fuerza en tu vida cotidiana
Andrews [41]

Answer:

La fuerza es la causa que provoca cualquier cambio en el movimiento o la geometría de los cuerpos. Un cuerpo puede aceptar muchas fuerzas al mismo tiempo, cuyo resultado será en cada punto una fuerza recomendada y un par recomendado. Cuando estas fuerzas se neutralizan entre sí, se dice que el cuerpo está en un estado de equilibrio.

En lo que respecta a los cuerpos libres, la fuerza es generalmente la causa de un cambio en su estado cinético, es decir, que los acelera o ralentiza. Esto también se aplica a su rotación, que puede acelerarse o desacelerarse. Para los cuerpos que no son libres de moverse en todas las formas, es decir, aquellos que están suspendidos en algún lugar y solo pueden moverse alrededor de un punto o eje o en una trayectoria predeterminada, así como aquellos que aplican fuerzas de fricción o reacciones generales de apoyo, nosotros reducir las fuerzas en puntos característicos. En el caso de los cuerpos no libres, la fuerza es la causa que provoca su movimiento o movilidad en relación con sus puntos de apoyo o conexión, o la que provoca su intenso estado, presión o deformación. La inercia de un cuerpo libre también permite que el cuerpo se someta a una tensión, presión o deformación intensas cuando se le aplican las fuerzas correspondientes.

4 0
3 years ago
Ling lives 2 miles from school. It took him 15 minutes to bike from school to home. The first half of the distance he biked at a
Fittoniya [83]

Explanation:

As we know that

time = distance/speed

The time used for firs half of the trip was

(1 mi)(12 mi/hour) = 1/12 hours = 5 minutes

The last half of the trip will took 10 minutes, 1/6 hour.

Speed = distance/ time

(1 mil) = (1/6h) = 6 mil/h

so the speed for last half of the trip was = 6mph

the average speed was

(2mil)(1/4 hour) = 8 mil/hour

So the ling's average speed was 8mph.

3 0
4 years ago
What is the force of gravity?
VladimirAG [237]

Answer:

2. 4.63 x 10 to the -11th power

Explanation:

m1 = 3.1, m2= 6.3, d = 5.3, G = 6.67 × 10^-11

m1 · m2 = 3.1 · 6.3 = 19.5

d² = 5.3² = 28.1

19.5/28.1 = 0.694

(6.67 · 10^-11) · 0.694 = 4.63 × 10^-11

7 0
2 years ago
Read 2 more answers
Which of the Moon’s positions will cause the highest or spring tides?
olya-2409 [2.1K]
The answer is B. A and C. Spring tides occur during a new moon and full moon

7 0
3 years ago
Read 2 more answers
Other questions:
  • A cart is pulled by a force of 250 N at an angle of 35° above the horizontal. The cart accelerates at 1.4 m/s2. The free-body di
    7·1 answer
  • Erica (38 kg ) and danny (43 kg ) are bouncing on a trampoline. just as erica reaches the high point of her bounce, danny is mov
    14·1 answer
  • What kind of waves can travel through empty space or a vacuum?
    10·1 answer
  • ◆ DC Circuits ◆<br><br>Someone please help with the above two questions !
    9·2 answers
  • Water is pumped from a reservoir to a tank suspended 12 m above the reservoir. The water flows through the same size pipe throug
    5·1 answer
  • Anne should use a to transfer electric energy into motion. She should also use a to start and stop the flow of current.
    15·1 answer
  • The unit for measuring electric power is the
    8·1 answer
  • Professional research telescopes should be large enough to gather sufficient radiation from space. Which of these statements bes
    7·2 answers
  • A roller coaster travels down a 120 m track in 12.5 seconds how fast does the roller coaster go
    7·1 answer
  • 4. What is the power of a machine that does 1800 N-m of work per minute?
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!