Answer: Roughly 41.57
Step-by-step explanation:
When an amount of heat Q (in kcal) is added to a unit mass (kg) of a
substance, the temperature rises by an amount T (°C). The quantity dQ/dT, called
specific heat, is 0.18 (kcal/°C) for glass. If dQ/dt = 12.9 kcal/min for a 1 kg sample
of glass at 20.0 °C, find dT/dt for this same sample. (Note: T is for temperature, t is
for time.)
Answer:
The change in temperature per minute for the sample, dT/dt is 71.[tex]\overline {6}[/tex] °C/min
Step-by-step explanation:
The given parameters of the question are;
The specific heat capacity for glass, dQ/dT = 0.18 (kcal/°C)
The heat transfer rate for 1 kg of glass at 20.0 °C, dQ/dt = 12.9 kcal/min
Given that both dQ/dT and dQ/dt are known, we have;
[tex]\dfrac{dQ}{dT} = 0.18 \, (kcal/ ^{\circ} C)[/tex]
[tex]\dfrac{dQ}{dt} = 12.9 \, (kcal/ min)[/tex]
Therefore, we get;
[tex]\dfrac{\dfrac{dQ}{dt} }{\dfrac{dQ}{dT} } = {\dfrac{dQ}{dt} } \times \dfrac{dT}{dQ} = \dfrac{dT}{dt}[/tex]
[tex]\dfrac{dT}{dt} = \dfrac{\dfrac{dQ}{dt} }{\dfrac{dQ}{dT} } = \dfrac{12.9 \, kcal / min }{0.18 \, kcal/ ^{\circ} C } = 71.\overline 6 \, ^{\circ } C/min[/tex]
For the sample, we have the change in temperature per minute, dT/dt, presented as follows;
[tex]\dfrac{dT}{dt} = 71.\overline 6 \, ^{\circ } C/min[/tex]
What is the graph for if y is a function of x
Answer:
The y value of a point where a vertical line intersects a graph represents an output for that input x value. If we can draw any vertical line that intersects a graph more than once, then the graph does not define a function because that x value has more than one output.
The dot plots compare the number of raffle tickets sold by boys and girls during a school fundraiser which plot has an outlier
A girls
B boys
C both plots
D neither plot
Answer:
boys
Step-by-step explanation:
8. La masa molar del agua es 18 g/mol Cuál es la masa molecular del
agua?
Answer:
El agua consiste en un átomo de oxígeno y dos átomos de hidrógeno. Esto significa que la masa de una molécula de agua es 1g + 1g + 16g = 18 g/mol
How many faces does the following shape have?
Answer:
5
Step-by-step explanation:
the back ones 2
the front ones 2
and the bottom one 1
5
x−8<−1
Can someone plz tell me the answer
Answer:
Step-by-step explanation:
you have to add 8 in both sides
x-8<-1
x-8+8<-1+8
x<7
Answer:x<7
Step-by-step explanation:
Step 1: Add 8 to both sides.
x−8+8<−1+8
x<7
7m - 13 = 43 plzzzzzzzzzzzz help
Answer:
=8
Step-by-step explanation:
7m-13=43
7m-13+13=43+13
7m=8
Help fast please....
Answer:
46 yd²
Step-by-step explanation:
elana walked 12 miles. then she walked 1/4 that distance. how far did she walk all together. select all that apply.
12+1/4
12•1/4
12+1/4•12
12(1+1/4)
12•3/4
12•5/4
Answer:
12+1/4•12
Step-by-step explanation:
Hello friend!
The answer to your question is down below!!
1. 12+1/4•12
2. 12(1+1/4)
3.12+1/4
In ΔLMN, m = 76 cm, n = 11 cm and ∠L=133°. Find ∠M, to the nearest degree
Sofia says that 1/3⋅1/3⋅1/3⋅1/3=4/3
Answer:
false
Step-by-step explanation:
Sofia is wrong; 1/3 · 1/3 · 1/3 · 1/3 = 11/12.
In the expression “six to the power
of four is 1,296," which number is the
base?
4th grade questions help!
Answer:
ok the first 1 is 5\5 LB and the 2nd one is 8\12 3rd 133\100
Step-by-step explanation:
PLEASE PLEASE GIVE ME BRAINLIST I NEVER GOT 1 PLZZ THANK YOU :) :D
please help me with this :) thankss
Answer:
multiply all which would be 110
Step-by-step explanation:
HELP PLS ILL GIVE U BRAINLEST OF U ANSWER THE QUESTION IN THE PIC CORRECT PLS ASAP PLS DONT GUESS PLS HELP
Answer:
C. a reflection across the x-axis followed by a 180° rotation around the origin
Step-by-step explanation:
You can figure out the answer to this problem by going through the steps in your head. You can tell the answer is C because if you flip the quadrilateral ABCD over the x-axis and then imagine rotating it around the origin by 180°, it would end up where A'B'C'D' is. If you can't imagine this, you can go onto a graphing calculator like desmos and do the transformations to see if they work.
3. What property is used to show that 3(4 – 6) = 12 – 18?
Distributive Property
Commutative Property
Associative Property
Subtraction Property
I NEED HELP WITH THIS ASAP... ITS THREE WEEKS OVER DEW!!!
Answer:
You are using Commutative Property
Step-by-step explanation:
PLEASE ANSWER ASAP FOR BRAINLESTS!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
Answer:
1080 for the bottom
650 for the top add them together
= 1730
Solve For X (I could use some help because I'm confused on this)
Answer:
X=10
Step-by-step explanation:
The arc is twice the angle, so 130.
12x+10=130
12x=130-10
12x=120
x=10
Regina bought a handmade quilt at original cost $120 to sell in her quilt store. She marked the price up 55%.
Answer:
[tex]Selling\ price = \$190.65[/tex]
Step-by-step explanation:
Given
[tex]Price = \$123[/tex]
[tex]Marked\ up = 55\%[/tex]
Required
The selling price
This is calculated as:
[tex]Selling\ price = Price + Marked\ up* Price[/tex]
[tex]Selling\ price = \$123 + 55\% * \$123[/tex]
[tex]Selling\ price = \$123 + \$67.65[/tex]
[tex]Selling\ price = \$190.65[/tex]
Answer:
$66.00
Step-by-step explanation:
We are asked to find the amount of markup on Regina's quilt. The amount of markup is given by
markup rate×original price=amount of markup.
The markup rate is in decimal form.
Since the original price was $120, and the markup rate is 55%=0.55, we have
0.55×120=66.
Thus, the amount of markup on Regina's quilt was $66.00.
divide 5/8 3/4 in the most simple form
Answer:
15/32
3/4 x 5/8 = 15/32 in fraction form.
Step-by-step explanation:
What is the answer I need to know
Answer:
Arrange your numbers in numerical order.
Count how many numbers you have.
If you have an odd number, divide by 2 and round up to get the position of the median number.
If you have an even number, divide by 2. Go to the number in that position and average it with the number in the next higher position to get the median.
look at the picture. please please help im stuck.
Answer:
7 is greater than or equal to x.
Answer:
Hey I’m not sure but I think it’s A
Step-by-step explanation:
True or False.
The expressions 3+y and 13(6+y) are equivalent?
True
False
Answer:
False
Step-by-step explanation:
Brainliest please?
Carpets Plus has five square carpet remnants. Two of the remnants measure 8 feet on a side, and three of the remnants measure 10 feet on the side. Which expression represents the total square footage of the five carpet remnants? whats the answers
2× 102) + (3 × 82)
82 + 103
5(8 + 10)2
(2 × 82) + (3 × 102)
COULD SOMEONE HELP ME WITH C? I NEED TO TURN THIS IN ASAP
URGENT!!! WHOEVER GETS THIS CORRECT FIRST GETS BRAINLEST!!
Explanation:
I suggest using a calculator for this. The height is 4in, correct? And the width is 13in, correct? I suggest multiplying 13 and 4 together. if you got 52 then you are on the right track with this. The top and bottom of this perimeter is 13in each and the height on the left and right is 4in. 4 times 4 is 16. and 13 times 13 is 169. Sometimes people add 169 to 16 to get the answer but that is the wrong answer.
Answer:
The answer to this question is,
13 * 2 = 26
4 * 2 = 8
26 * 8 = 208
{-I apologize if i did the math wrong-}
hello I need help to past this test on math:
(more than one answer)
Which of the following is part of the set of integers?
1. negative whole numbers
2. zero
3. natural numbers
4. positive whole numbers
what are the answers (more than one) 1,2,3,or 4?
(u dont need an explanation)
All of the choices (1 , 2 , 3 and 4) are correct
I got a screenshot, You got answer
Answer:
A. [tex]V = (pi)(3.25)^2(12)[/tex]
Step-by-step explanation:
The formula for the volume of a cylinder is the formula for the area of the circle, times the height of the cylinder. The formula for the volume of a circle is,
[tex]A = (pi)(r)^2[/tex]
Multiply that by the height to find the formula for the volume of a cylinder,
[tex]V=(pi)(r)^2(h)[/tex]
Where (pi) represents the value (3.1415), (r) represents the radius, and (h) represents the height of the cylinder. Now substitute in the given values, remember, this problem gives the diameter of the cylinder, divide that value by two to find the radius.
[tex]V=(pi)(\frac{6.5}{2})^2(12)\\\\V = (pi)(3.25)^2(12)[/tex]
6/15 as a fraction in its simplest form
Answer:
2/5
Step-by-step explanation:
DIvide both numbers by 3
Answer:
2/5 !
Step-by-step explanation:
BRAINLIEST!
A bowl of cold gazpacho soup is warming to room temperature. The temperature difference
between the soup and the room decreases by 5% every minute. What will the temperature
difference be in 8 minutes if it is currently 24°C?
If necessary, round your answer to the nearest tenth.
Answer: 25
Step-by-step explanation: