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
yKpoI14uk [10]
2 years ago
15

1. Calcular la masa de mercurio que pasó de 30 °C hasta 120 °C y absorbió 4400 cal. Calor específico del

Physics
1 answer:
timofeeve [1]2 years ago
7 0

Answer:

Masa, m = 0.088 kg

Explanation:

Given the following data;

Temperatura inicial = 30°C

Temperatura final = 120°C

Capacidad calorífica específica = 138J/kg.K

Calor absorbido, Q = 4400 cal.

Para encontrar la masa;

La capacidad calorífica viene dada por la fórmula;

Q = mct

Dónde;

Q representa la capacidad calorífica o la cantidad de calor.

m representa la masa de un objeto.

c representa la capacidad calorífica específica del agua.

dt representa el cambio de temperatura.

dt = T2 - T1

dt = 120 - 30

dt = 90°C to kelvin = 273 + 90 = 363K

Sustituyendo en la fórmula, tenemos;

4400 = m*138*363

4400 = 50094m

m = \frac {4400}{50094}

Masa, m = 0.088 kg

You might be interested in
A force of 5.00 N to the left causes a 1.35 kg book to have a net acceleration of 0.76 m/s2 to the left. What is the frictional
Nuetrik [128]

Answer:

4.0 N

Explanation:

Sum the forces in the x direction:

∑F = ma

F − Fr = ma

Fr = F − ma

Fr = 5.00 N − (1.35 kg) (0.76 m/s²)

Fr = 4.0 N

8 0
3 years ago
The average radius of Mars is 3,397 km. If Mars completes one rotation in 24.6 hours, what is the tangential speed of objects on
sammy [17]

Answer: First, we determine the circumference of the Mars by the equation below.  

                                     C = 2πr

Substituting the known values,

                                     C = 2(π)(3,397 km) = 6794π km

To determine the tangential speed, we divide the circumference calculated above by the time it takes for Mars to complete one rotation and that is,

                   tangential speed = 6794π km / 24.6 hours = 867.64 km/h

6 0
2 years ago
Read 2 more answers
A student solving for the acceleration of an object has applied appropriate physics principles and obtained the expression a=a1
AlekseyPX

Explanation:

A student solving for the acceleration of an object has applied appropriate physics principles and obtained the expression :

a=a_1+\dfrac{F}{m}

Where

a_1=3\ m/s^2

F=12\ kg-m/s^2

m = 7 kg

So, the correct step for obtaining a common denominator for the two fractions in the expression in solving for a is (a) and the value of a is :

a=3+\dfrac{12}{7}

a=4.71\ m/s^2

Hence, the correct option is (a).

8 0
3 years ago
Un móvil parte del reposo y, al cabo de 5 s, alcanza una velocidad de 5 m/s; a
Lesechka [4]

Answer:

creo que es la a ..........

4 0
3 years ago
The micturition reflex can be voluntarily controlled by the
ki77a [65]

Answer:

The micturition reflex can be voluntarily controlled by the relaxation of the external urethral sphincter.

3 0
3 years ago
Other questions:
  • What happens when heat is removed from water?
    7·2 answers
  • The period of a mechanical wave is 5 seconds. What is the frequency of the wave?
    5·1 answer
  • A portable television using a 12 volt, 3 Ah rechargeable battery can operate for a period of about 6 hours. What is the average
    7·1 answer
  • Some coastal regions of the world have cooler summers and warmer winters than inland regions at the same latitude. What accounts
    13·1 answer
  • Suppose the mass of a fully loaded module in which astronauts take off from the Moon is 1.0 x 10^4 kg. The thrust of its engines
    10·1 answer
  • Imagine that you move a substance from one container to another and it's volume changes, what state of matter is that substance?
    6·1 answer
  • 5. List five materials that we use in compost?​
    10·1 answer
  • A Canadian college student who has taken an astronomy class goes home for the holidays and persuades his parents to let him borr
    6·1 answer
  • Why is it better to drive a large SUV in icy conditions with chains on the tires, instead of a small car with old tires? Explain
    13·1 answer
  • A force of 36N acts at an angle of 55 degrees to the vertical. The force moves its point of application by 64 cm in the directio
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!