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
Darina [25.2K]
2 years ago
10

Sebanyak 80g emas bersuhu 30°C diberi kalor sebesar 1512 J.Jika kalor jenis emas 126 J/kg K,suhu akhir emas setelah diberi kalor

sebesar
Physics
1 answer:
Leno4ka [110]2 years ago
8 0

Answer:

180 ° C

Explanation:

Dari pertanyaan yang diberikan di atas, diperoleh data sebagai berikut:

Massa (M) emas = 80 g

Suhu awal (T1) = 30 ° C

Kalor (Q) = 1512 J.

Kapasitas kalor jenis (C) = 126 J / kgK Suhu akhir (T2) =?

Selanjutnya, kita akan mengubah 80g menjadi kilogram (Kg). Ini dapat diperoleh sebagai berikut:

1000 g = 1 Kg

Karena itu,

80 g = 80 g × 1 Kg / 1000 g

80 g = 0,08 Kg

Jadi, 80 g setara dengan 0,08 Kg

Selanjutnya, kita akan mengubah suhu 30 ° C ke Kelvin. Ini dapat diperoleh sebagai berikut:

T (K) = T (° C) + 273

Suhu awal (T1) = 30 ° C

Suhu awal (T1) = 30 ° C + 273 = 303 K.

Selanjutnya, kami akan menentukan suhu akhir emas. Ini dapat diperoleh sebagai berikut:

Massa (M) emas = 0,08 Kg

Suhu awal (T1) = 303 K

Kalor (Q) = 1512 J.

Kapasitas kalor jenis (C) = 126 J / kgK Suhu akhir (T2) =?

Q = MC (T2 - R1)

1512 = 0,08 × 126 (T2 - 303)

1512 = 10,08 × (T2 - 303)

Bagilah kedua sisinya dengan 10,08 1512 / 10,08 = (T2 - 303)

150 = T2 - 303

Kumpulkan istilah serupa

150 + 303 = T2

T2 = 453 K.

Akhirnya, kita akan mengubah suhu 453 K menjadi celsius. Ini dapat diperoleh sebagai berikut:

T (° C) = T (K) - 273

T2 = 453 K.

T (° C) = 453 - 273

T (° C) = 180 ° C

Oleh karena itu, temperatur akhir emas setelah dipanaskan adalah 180 ° C

You might be interested in
Ajar can hold 60 mL of liquid. It is 10 cm high and 2 cm wide. The length of the jar is:
ZanzabumX [31]
60:2=30 despues 30:10= 3
8 0
2 years ago
Read 2 more answers
Please need help on this
likoan [24]
The answer to this would be ocean floor
4 0
2 years ago
Why are water storage tanks usually placed on high towers
sammy [17]
Thay are on high towers because if it was below how would the water flow. Putting it on high towers gives you an advantage of the gravity with means you got free pressure without having to use a pump.

<span>Water pressure = Height * density * gravity</span>
7 0
3 years ago
Read 2 more answers
How much power is needed to lift the 200-N object to a height of 4 m in 4 s?
Vitek1552 [10]

Answer: 2000 watts

Explanation:

Given that,

power = ?

Weight of object = 200-N

height = 4 m

Time = 4 s

Power is the rate of work done per unit time i.e Power is simply obtained by dividing work by time. Its unit is watts.

i.e Power = work / time

(since work = force x distance, and weight is the force acting on the object due to gravity)

Then, Power = (weight x distance) / time

Power = (200N x 4m) / 4s

Power = 8000Nm / 4s

Power = 2000 watts

Thus, 2000 watts of power is needed to lift the object.

3 0
3 years ago
A photon detector captures a photon with an energy of 4.29 ✕ 10−19 J. What is the wavelength, in nanometers, of the photon?
serious [3.7K]

Answer :  The wavelength of photon is, 4.63\times 10^{2}nm

Explanation : Given,

Energy of photon = 4.29\times 10^{-19}J

Formula used :

E=h\times \nu

As, \nu=\frac{c}{\lambda}

So, E=h\times \frac{c}{\lambda}

where,

\nu = frequency of photon

h = Planck's constant = 6.626\times 10^{-34}Js

\lambda = wavelength of photon  = ?

c = speed of light = 3\times 10^8m/s

Now put all the given values in the above formula, we get:

4.29\times 10^{-19}J=(6.626\times 10^{-34}Js)\times \frac{(3\times 10^{8}m/s)}{\lambda}

\lambda=4.63\times 10^{-7}m=4.63\times 10^{-7}\times 10^9nm=4.63\times 10^{2}nm

Conversion used : 1nm=10^{-9}m

Therefore, the wavelength of photon is, 4.63\times 10^{2}nm

6 0
2 years ago
Other questions:
  • if you divide a force measured in newtons by a speed measured in in meters per second in what units will the answer be expressed
    11·1 answer
  • Water particles in an ocean wave move in circles. This particle movement causes a wooden raft to...
    9·2 answers
  • When you "crack" a knuckle, you suddenly widen the knuckle cavity, allowing more volume for the synovial fluid inside it and cau
    11·1 answer
  • A rod of length L is hinged at one end. The moment of inertia as the rod rotates around that hinge is ML2/3. Suppose a 2.50 m ro
    13·1 answer
  • Which of the following is NOT a characteristic of scientific knowledge? please help me
    6·2 answers
  • The diagram shown represents two objects, a and b, in contact. The direction of heat transfer between them is determined by thei
    14·1 answer
  • a cylinder of mass 34.5 kg rolls without slipping on a horizontal surface. At a certain instant, its center of mass has a speed
    9·2 answers
  • What happens to the force between charged and uncharged objects as the distance between them decreases?
    15·1 answer
  • whirl a rock at the end of a string and it follows a circular path. if the string breaks, the tendency of the rock is to
    13·1 answer
  • When Elements neutral atom contains 5 neutrons 4 electrons and 4 protons
    9·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!