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Mamont248 [21]
4 years ago
7

If you take 50 g of an unknown metal and it takes 1112.5 J of energy to change the temperature

Mathematics
1 answer:
____ [38]4 years ago
7 0

Answer:

0.89 J/g/°C

Step-by-step explanation:

The Heat gained by an object is given in terms of specific heat capacity as:

H = mc(T2 - T1)

where m = mass of the object

c = specific heat capacity

T2 = final temperature

T1 = initial temperature

50 g of an unknown metal takes 1112.5 J of energy to change its temperature  from 20°C to 45°C.

This implies that:

1112.5 = 50 * c * (45 - 20)

1112.5 = 50 * c * 25

1112.5 = 1250 * c

=> c = 1112.5 / 1250

c = 0.89 J/g/°C

The specific heat capacity of the metal is 0.89 J/g/°C

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Aleks [24]
You can do this !

The rectangular prism has

                   -- length = 10 cm
                   -- width  =  7 cm
                   -- height =  3 cm.

-- The area of the top and bottom is  (length x width)  each.

-- The area of the left and right sides is  (length x height)  each.

-- The area of the front and back is  (width x height)  each.

There.  I just laid out all the schmartz you need to answer this question.
The rest is all simple arithmetic, and you're perfectly capable of turning
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3 0
3 years ago
Please help I’ll give brainiest!
Marizza181 [45]

Answer: h(3)= -4 h(-3)=-16

Step-by-step explanation:

Plug in 3 and -3 for x and solve

h(3)= 2(3)-10

h(-3)= 2(-3)-10

4 0
3 years ago
an article when sold at a profit of 5% yields rupees 50 more than when sold at a loss of 5% what was the cost price of the artic
ziro4ka [17]

I'm going to assume that the question should say “at a profit of 5%”.

Restate question in the form of a equation.

Let C = the cost price of the item.

C + 0.705 C = C - 0.05 C + Rs 50

0.05 C = - 0.05 C + Rs 50

0.10 C = Rs 50

C = Rs 500

The cost price of the item is Rs 500

I hope this help you

6 0
3 years ago
Of 350 solitaire games that jay played, he won 154 times. what percent of the games did jay win?​
ludmilkaskok [199]

Answer:

44.044%

Step-by-step explanation:

To find the answer we first have to find the value of each percent, to do this we divide 100 by 350, that gets us approximately 0.286. We know that he won 154 of them we then multiply 154 by 0.286 to get the percentage of games he won and we get 44.044.

5 0
3 years ago
Read 2 more answers
What is (3/5) squared?
Marat540 [252]
3/5 squared in 9/25, 3*3/5*5 :)
5 0
3 years ago
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