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
natita [175]
3 years ago
14

A 2 kg metal cylinder is supplied with 1600J of energy to heat it from 5°C to 13°C. What is the specific heat capacity of the me

tal?
Mathematics
1 answer:
Neporo4naja [7]3 years ago
6 0

Answer:

c = 100\,\frac{J}{kg\cdot ^{\circ}C}

Step-by-step explanation:

According to the First Law of Thermodynamics, the heat received by the metal cylinder is equal to the change in the internal energy. That is:

Q = \Delta U

Q = m \cdot c \cdot \Delta T

The specific heat is clear in the previous expression and finally computed:

c = \frac{Q}{m\cdot \Delta T}

c = \frac{1600\,J}{(2\,kg)\cdot (13^{\circ}C-5^{\circ}C)}

c = 100\,\frac{J}{kg\cdot ^{\circ}C}

You might be interested in
Can you walk me through this problem i dont understand it AREA OF POLYGONS
Mamont248 [21]
The area of a paralellogram is bh

each dimention is multiplied by n
b turns to bn
h turns to hn

bh turns to (bn)(hn) or bnhn or bhn²

expression is bhnn or bhn² or bhn^2 (depends if the program will let you enter the exponent)
6 0
3 years ago
9. Find the number that completes the following problem. (3 + 5) + 2 = 2(+2)​
kirill115 [55]

Answer:

4

Step-by-step explanation:

(8)+2=4

16=4

16=4•4

16=16

4 0
3 years ago
A colony of bacteria is grown under ideal conditions in a laboratory so that the population increases exponentially with time. A
Naddik [55]

Answer:

Initial bacterias = 6006000

Altought I believe is safe to assume that the values were 192,000 and 384,000 instead of 192,192,000 and 384,384,000, in that case the initial bacterias is 6000

Step-by-step explanation:

A exponential growth follows this formula:

Bacterias  = C*rⁿ

C the initial amount

r the growth rate

n the number of time intervals

Bacterias (55 hours) = 192,192,000

Bacterias (66 hours) = 384,384,000

Bacterias(55hours)=C*r^{{\frac{55-t}{t}}} \\Bacterias (66hours) = C*r^{\frac{66-t}{t}}}

If you divide both you can get the growth rate:

\frac{Bacterias (66hours)}{Bacterias(55hours)}=\frac{C*r^{\frac{66-t}{t}}}{C*r^{{\frac{55-t}{t}}}} \\\frac{384,384,000}{192,192,000} =r^{\frac{66-t}{t} -\frac{55-t}{t} } \\2 =r^{\frac{11}{t}}

So with that r = 2 and each time interval correspond to 11 years

Then replacing in one you can get the initial amount of C

Bacterias (55hours)=C*2^{\frac{55-11}{11} } 192,192,000 = C*32\\C= 6006000

7 0
2 years ago
A toy rocket is launched straight up into the air with an initial velocity of 60 ft/s from a table 3 ft above the ground. If acc
alexdok [17]
The equation is:
h ( t ) = - 16 t² + 60 t + 3
The toy rocket will reach the ground when: h ( t ) = 0
- 16 t² + 60 t + 3 = 0
t _{12} =  \frac{-60+/- \sqrt{3600+192} }{-32}
t 1 = - 0.05
t 2 = 3.8
Answer:
C ) 3.80 s

3 0
3 years ago
Can someone prove me with the answer please
hammer [34]

Answer:

X = 1

Step-by-step explanation:

When x = 1, gx is equal to 3 in both graphs. The input of x = 1 produces the same output value for both functions.

7 0
2 years ago
Other questions:
  • If g(x) =4x^2-16 were shifted 9 units to the right and 1 down, what would be the new equation
    15·2 answers
  • Two rhombuses with the same side lengths are always congruent ?
    6·1 answer
  • Simplify the following expressions ( combine like-terms )
    14·1 answer
  • The sum of 5 and 9x is equal to 41. What is the value of x
    6·1 answer
  • What is the volume of a hemisphere with a diameter of 8ft, rounded to the nearest tenth of a cubic foot
    10·1 answer
  • The data show prices of light bulbs at a home improvement store, rounded to the nearest dollar. Find the interquartile range (IQ
    11·2 answers
  • Can you Help me with Question 17 Please I’m begging you on my knees I need your help please help me please I’m begging for your
    9·1 answer
  • Help me please, i need a answer asap
    8·1 answer
  • Find the value of y for the given value of x. y= -9×+10 when × = 10<br>​
    15·1 answer
  • Chapitre 6. Proportionnalité (12) Approfondissement
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!