a person whose job is making things by hand out of metal that has been heated temperature. He always works with iron and metal." a.herdsmanb.blacksmith c.carpenter d.grocer
1. a person whose job is making things by hand out of metal that has been heated temperature. He always works with iron and metal." a.herdsmanb.blacksmith c.carpenter d.grocer
Jawaban:
b.blacksimth
Penjelasan:
Arti kata blacksmith dalam Kamus Bahasa Inggris – Indonesia adalah kb. pandai besi.
Kata black digunakan untuk membedakan pandai (= ahli) besi dari pandai logam lainnya, macam pandai emas (goldsmith) atau pandai perak (silversmith). Saat besi dipanaskan untuk keperluan pengolahan tradisional oleh para pandai tersebut, terjadi oksidasi permukaan besi yang menimbulkan lapisan berwarna hitam.
semoga bermanfaat dan tolong jadikan sebagai jawaban terbaik ya:)
2. a metal cube of side 1 cm has a mass of 100g. Calculate the density of the metal cube in:a. g/cm³b. kg/cm³
Jawaban:
kubus logam dengan sisi 1 cm memiliki massa 100g. Hitung massa jenis kubus logam di:
a. g / cm³
b. kg / cm³
diket
r kubus= 1cm
m=100g
cari volume kubus
v kubus = s x s x s
= 1 x 1 x 1
= 1 cm³
ρ=m/v
a.dalam g/cm³
ρ=100/1cm³
=100 g/cm³
b. dalam kg/cm³
ubah satuan masa dari g ke kg
100g =0,1kg
ρ=m/v
=0,1kg/1cm³
=0,1 kg/cm³
3. a person whose job is making things by hand out of metal that has been heated temperature. He always works with iron and metal. a. herdsman b. blacksmith c. carpenterd. grocer
Jawaban:
A.herdsman
Penjelasan:
maaf kalo salah semoga bermanfaat
B. Black smithPenjelasan
Maaf klo slh
4. . The mass of a piece of metal is 1200 g. A measuring cylinder contains 150 cm³ of water. The piece of metal is put into the measuring cylinder. The water level rises to 250 cm³ and covers the metal. What is the density of the metal? 1 point A. 3.0 g / cm³ B. 4.8 g / cm³ C. 8.0 g / cm³ D. 12.0 g / cm³
Jawaban:
D
Penjelasan:
m = 1200 g
V = ( 250-150) cm³= 100 cm³
ρ = m/v
= 1200/100
= 12.0 g/cm³
5. what happened to a solid when it is heated?
Jawaban:
will melt
Penjelasan:
will melt:akan mencair
Semoga bermanfaat
6. A pyrex glass with initial length of 1 m is heated up to 1200C from initial temperature. Determine the final length of pyrex glass if its length expansion coefficient is 0.00003/0C!
Jawaban:
the final length of pyrex glass
Lt=Lo(1+α∆t)
Lt=1(1+0,00003(120))
Lt=1(1+0,0036)
Lt=1(1,0036)
Lt=1,0036m
7. . A metal is 20 cm in length, if the linear expansion coefficient of the metal is 0,000017/°C. What temperature change is needed in order to make the copper expand 0,08 cm?bantu jawab kak
Penjelasan:
Perubahan suhu sebesar 235⁰C
Lo = 20 cm
@ = 0,000017/⁰C
∆L = 0,08 cm
dit. perubahan suhu ∆T?
jawab :
∆L = Lo x @ x ∆T
0,08 = 20 x 0,000017 x ∆T
0,08 = 0,00034 ∆T
∆T = 0,08/0,00034
∆T = 235 (dengan pembulatan)
8. the temperature of a piece of metal was 32°C. it was then lowered into a glass of hot water and the temperature of the piece of metal increased to 36°C. find the percentage increase in temperature of the piece of metal
32 = 100%
(36 - 32)/32
= 4/32
= 1/8
= 12,5%
9. A metal square has an area of 350 mm at 30°C. Determine the final area of the metal when the temperature is raised to 80°C. Assume the coefficientof area expansion of metal to be 2x10-5/°C!The final temperature of the plate is ....
Jawab:20°c
Penjelasan dengan langkah-langkah:
10. make a short description of this pictures by using words provided! -electric device-the use of a heated non-stick metal-to remove wrinkles from fabric -use adjustable temperature
1.watch out from electric device
2.The use of a heated non stick metal is dangerous
3.use this to remove wrinkles from fabric
4.can you use adjustable temperature
11. The metal bar receives 1250 joule heat energy and has a specific heat of 650 j/kg^ 0 c what is the mass (kilogram) if the metal bar is heated from 45 degrees*c to 110 degrees *c ?
Jawaban:
Q = mcΔT
1250 J = m.650 J/kg°C.(110-45) °C
1250 J = m.650 J/kg°C.65 °C
m = 1250 J/(650 J/kg°C.65 °C)
m = 5/169 kg = 0,0296 kg
12. Your teacher is teaching a class about chemistry, and mentioned that oxygen is a metal. You’re almost sure it’s not. How would you express your opinion? Pilih jawaban kamu. 1 As far as I am concerned, oxygen is not a metal. 2 I agree with you, but oxygen is not a metal. 3 According to me, oxygen is not a metal. 4 To my mind, oxygen does not seem to be a metal. 5 It seems to me that you accidentally referred to oxygen as a metal. itu ada pilihannya,tolong dibantu;)
i think, i would choose number 3. Because, i dont think that oxygen is a metal. But i want to say sorry if it is wrongnumber = one { 1 }
number = two { 2 }
13. what will happen if a metal rod has drawing pins stuck to it with wax and is heated as one end
Jawaban:it penetrate the metal and the metal become hot and melted down the wax
14. A metal bar is 100cm long. Change length 0,11cm if temperature change 90°C. What is the coefficient of linear expansion metal
Jawaban:
The coefficient of linear expansion of metal is 0.11 cm/°C.
Bantu dan apresiasi penjawab dengan mengunjungi dan mengeksplorasi situs web sodiqi .com
15. What happens to an ice cube when its temperature reaches above 0ºC?
arti kalimat diatas: apa yg terjadi pada es batu jika temperatur temperaturnya mencapai diatas 0°C?
answer: ice cube will melt
artinya: es batu akan mencair
Jawaban:
What happens to an ice cube when its temperature reaches above 0ºC?
melt
artinya :
apa yang terjadi pada es batu jika suhunya lebih dari 0°C?
mencair
semogamembantu....
16. 3. The2.5 kg metal barreceives850Jouleheat energy.Calculate the specific heat(In J/kg0C)ifthe metal bar is heated from 300C to 1200C.
Untuk menentukan kalor jenisnya kita bisa menggunakan persamaan umum dari kapasitas kalor, sehingga didapatkan kalor jenisnya adalah: 0,378 J/kg°C
Penjelasan dengan langkah-langkahDiketahui: Batang logam yang memiliki berat 2,5 kg (m) menerima energi kalor 850 Joule (Q), batang logam dipanaskan dari 300C hingga 1200°C (ΔT = 1.200 - 300 = 900°C)Ditanya: Hitung kalor jenis (Dalam J/kg°C)?JawabRumus untuk menentukan kapasitas kalor adalah:
C = m x c
Dengan:
m = massa benda (kg)
c = kalor jenis J/kg°C
atau, C = (m x c x ΔT) : ΔT
Dengan:
ΔT = Perubahan suhu (°C)
Maka, rumus untuk menentukan kalor jenis (c) adalah:
c = Q : (m x ΔT)
c = 850 : (2,5 x 900)
c = 850 : 2.250
c = 0,378 J/kg°C
Pelajari lebih lanjutMenentukan kalor jenis: https://brainly.co.id/tugas/6432845
#BelajarBersamaBrainly
17. A metal cube of side 1 cm has a mass of 100 g. Calculate the density of the metal cube in gm/cm3 and in kg/cm3
Jawab:10g
Penjelasan dengan langkah-langkah:
18. A piece of metal weighing 4 kg is heated from 25 Degrees Celsius to 55 degrees Celsius. The heat needed is 12,000 Joules. A. Calculate the heat capacity of the metal b. Calculate the specific heat capacity of the metal.
A.
Q = C . delta T
12000 = C . ( 55 - 25 )
C = 400 J/C
B.
C = m . c
400 = 4 . c
c = 100 J/KgC
19. A heated rod with a uniform heat source can be modelled by the Poisson equation d 2θ dx2 = −g(x) where θ is a temperature distribution in the direction of heat flow, x denotes the local position with respect to x–coordinate and g(x) is a heat source. Given g(x) = 28 and the boundary conditions θ(0) = 50 and θ(20) = 400, approximate the temperature distribution using the Finite Difference method. Use a step size, ∆x = 5.
Jawaban:
cari sendiri di buku pasti ada kalu rajin
20. It isc. Pyramida. Cubeb. Sphere0d. Cylinder
Jawaban:
a. cube
Penjelasan:
maaf kalo salah
0 komentar:
Posting Komentar