_______ in front of a camera lens changes the color of the light that reaches the film. * (A) Placed a filter (B) A filter is placed (C) A filter placed (D) When a filter placed
1. _______ in front of a camera lens changes the color of the light that reaches the film. * (A) Placed a filter (B) A filter is placed (C) A filter placed (D) When a filter placed
Jawaban:
B. A filter is placed
Jadikan jawaban terbaik ya..
(C) A filter placed in front of a camera lens changes the color of the light that reaches the film.
Sebuah filter ditaruh didepan sebuah lensa kamera merubah warna cahaya yang sampai ke film.
2. In a sample of an unknown compound, the mass ratio of Cl to C is 47.227g Cl to 4.00g C. In another sample, there are 0.553g of Cl. What mass of C would be in this sample?
Rasio perbandingan massa tiap unsur dalam suatu sample juga mewakili perbandingan mol nya
massa C/Ar. C : massa Cl/Ar. Cl
4/12 : 47,277
0,3 : 1,3
Pembulatan perbandingan mol
1 : 4
Atau senyawa tersebut memiliki rumus molekulnya CCl4
Hukum perbandingan tetap dari rumusan diatasi massa C
= 1/4 massa Cl = 1/4 x 0,553 gram = 0,138 gram
Semoga membantu.
3. A water flask contained 1 l of water. Peter poured out 1/4 l of water to drink. Mrs Tay added 4/5 l of water into the flask.How much water was in the flask in the end?
Jawaban:
There is 1 11/20 l in the flask in the end.
Penjelasan dengan langkah-langkah:
= 1 l - 1/4 l + 4/5 l
= 20/20 l - 5/20 l + 16/20 l
= 31/20 l (improper fraction)
= 1 11/20 l (mixed number)
4. A 6-cm-high object is placed in front of a concave mirror with a radius of curvature of 20 cm. Determine the image height if the object distance is 5 cm
Penjelasan:
Sebuah benda setinggi 6 cm diletakkan di depan cermin cekung dengan jari-jari kelengkungan 20 cm. Tentukan tinggi bayangan jika jarak benda adalah 5 cm
R=2f
f=1/2R
f=10
1/s+ 1/s' =1/f
1/5 +1/s' = 1/10
1/s'= 1/10 - 1/5
1/s'= -1/10
s'=-10
M=|s'/s|=|-10/5|=2kali
M=|h'/h|
2=h'/6
h'=0,3cm
Jawaban:
0,3cm
Penjelasan:
maaf gak ada cara
semoga membantu
5. 13. the amount of curvature in the type of wafer used in the manufacture of integrated circuits has a mean of 1.3 mm and a standard deviation of 0.1 mm. a random sample of 200 wafers is drawn. how many wafers must be sampled so that the probability is 0.05 that the sample mean exceeds 1.305?
Jawaban:
what you need and the bear brand new with best offer just love
6. Time Limit: 2 sec / Memory Limit: 1024 MB Score : 100 points Problem Statement It is known that the area of a regular dodecagon inscribed in a circle of radius a is 3a 2 . Given an integer r, find the area of a regular dodecagon inscribed in a circle of radius r. Constraints 1≤r≤100 r is an integer. Input Input is given from Standard Input in the following format: r Output Print an integer representing the area of the regular dodecagon. Sample Input 1 Copy 4 Sample Output 1 Copy 48 The area of the regular dodecagon is 3×4 2 =48. Sample Input 2 Copy 15 Sample Output 2 Copy 675 Sample Input 3 Copy 80 Sample Output 3 Copy 19200
Jawaban:
#include<bits/stdc++.h>
using namespace std;
int r;
int main() {
cin >> r ;
cout << 3*r*r << endl;
}
Penjelasan:
using name space std problem solving
7. An object is placed 40 cm in front of a convex mirror and the image formed is found at a distance of 8 cm behind the mirror. Determine a. The height of the object if the height of the image of 0,1 m!
S (object distance)= 40cm
S' (image distance)= -8 cm
M = | -8/40 |
= 5
M = h' / h
h' = 0,1 m
5 = 0,1 / h
height = 0,1/5
= 0,02 m = 2 cm
semoga membantu:)
M= |-Si/So|=|-(-8)/40|=1/5
M=hi/ho
1/5=0,1/ho
ho= 0,5 m
8. If the shape of an object remains the same when it is placed in different containers, the object has a ........... shape.
transformation (perubahan bentuk)
9. Whicih sentece is in the simple present? -Hi reads a book -Hi will read a book -Hi read a book
Jawaban:
-Hi will read a book
Penjelasan:
10. you meet a friend of yours in the stret A. hi ?
A : Hey!
B : Hi!
A : Where are you going?
B : I want to buy some food in the market.
A : I also want to go there. Why don't we go there together?
B : That's a really great idea. Let's go!a. hi there
b. hi...long time no see
a. yeah...still remember me?
b. of course. how is everything going with you?
a. so far so good mate
b. im glad to hear
a. where are you going?
b. there is a new bookstore at the corner. wanna accompany me there?
a. sure
b. lets go now
11. An advertiser claims that the average percentage of brown M&M’S candies in a package of milk chocolate M&M’S is 13%. Suppose you randomly select a package of milk chocolate M&M’S that contains 55 candies and determine the proportion of brown candies in the package. a. What is the approximate distribution of the sample proportion of brown candies in a package that contains 55 candies? b. What is the probability that the sample percentage of brown candies is less than 20%? c. What is the probability that the sample percentage exceeds 35%?
Jawaban:
Answer: The proportion of brown candies in the packages is 0.14.
Step-by-step explanation:
Since we have given that
Number of candies = 51 = n
Percentage of brown candies in a pack of milk chocolates = 14%
So, x = number of brown candies

so, the proportion of brown candies in the package is given by

12. Problem Statement It is known that the area of a regular dodecagon inscribed in a circle of radius a is 3 a 2 . Given an integer r , find the area of a regular dodecagon inscribed in a circle of radius r . Constraints 1 ≤ r ≤ 100 r is an integer. Input Input is given from Standard Input in the following format: r Output Print an integer representing the area of the regular dodecagon. Sample Input 1 4 Sample Output 1 48 The area of the regular dodecagon is 3 × 4 2 = 48 . Sample Input 2 15 Sample Output 2 675 Sample Input 3 80 Sample Output 3 19200 bantu lagi kuy C++
Jawab:
#include<bits/stdc++.h>
using namespace std;
int r;
int main() {
cin >> r ;
cout << 3*r*r << endl;
}
Penjelasan dengan langkah-langkah:
nih coba aja di run
Jawaban:
c++
Penjelasan dengan langkah-langkah:
maaf kalo salah
semoga benar
13. Hello/Hi" is a phrase/expression of
expression of greeting.
cmiiw
14. Whicih sentece is in the simple present? -Hi reads a book -Hi will read a book -Hi read a book
Jawaban:
he reads a book
maaf kalau salah
15. An object is placed 40 cm in front of a convex mirror and the image formed is found at a distance of 8 cm behind the mirror. Determine a. The height of the object if the height of the image of 0,1 m!
you ask same question
the answere is 0,5 m
16. Handle the conical flask with care. The verb of the sentence is.
Handle the conical flask with care.
Arti : Tangani labu berbentuk kerucut dengan hati-hati
Maka, verb (kata kerja) dari kalimat tersebut adalah :
Handle= Tangani
17. in a sample of iron ore 18% is iron.how much ore is needed to produce 3600 kg of iron ?
18/100 Bijih besi = Besi.
Banyak bijih besi yang dibutuhkan
= 3.600 × 100/18.
= 20.000 Bijih besi.
18. A positive charge Q is placed on a conductive spherical shell with inner radius 1 and outer radius 2. A particle with charge q is placed at the center of the spherical cavity. The magnitude of the electric field at a point in a spherical cavity at a distance r from the center is
The answer and explanation is attached the PNG file
19. Passive voice & Active voice 1.The thief was seen by witnesses. 2.The cherry was placed on top of the cake 3.A beaker is distinguished from a flask by having straight rather than sloping sides.
Penjelasan:
1 . The Thief was seen by Witnesses.
= The witnesses saw the Thief.
2. The cherry was placed on the top of the Cake.
= On the top of the Cake was placed by the cherry.
3. A beaker is distinguished from a flask by having straight rather than sloping sides.
=Having straight rather than sloping side was distinguished from a flask by a beaker
Kalo Salah maaf
20. The principal solute in vinegar is acetic acid (CH3COOH).If a sample of vinegar has 5.5% w/w acetic acid and a density of 1.006 g/ml, what is the molarity of acetic acid?
Penjelasan:
Zat terlarut utama dalam cuka adalah asam asetat (CH3COOH). Jika sampel cuka memiliki asam asetat 5,5% b / b dan densitas 1,006 g / ml, berapakah molaritas asam asetat?
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