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Harrizon [31]
3 years ago
11

The equation below can be used to find the specific heat capacity of a substance. What is the specific heat capacity if it takes

1000 J of energy to heat 25 g of this substance by 100°C? Give your answer in J/kg°C.

Physics
2 answers:
Doss [256]3 years ago
5 0

Answer:

400J/kg°C

Explanation:

OleMash [197]3 years ago
4 0

Answer:

not sure

Explanation:

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Lucille is finding it difficult to play soccer after school. Her doctor thinks that her cells might not be getting enough oxygen
lana66690 [7]

Answer:

See the explanation below.

Explanation:

Circulation of blood and oxygen is possible in body when circulatory system work along with respiratory system. Through tranche air moves in and out from lungs, whereas, through pulmonary arteries and veins (both connected to heart) blood moves in and out from the lungs. As Lucille is facing problem in his respiratory and circulatory system hence, it is difficult for him to play soccer because under normal circumstances when there is increase in physical activity then muscle cell respire more as compare to when the body is on rest. So, with increase of physical activity there is also increase in the rate of breathing which result in more absorption of oxygen and more removal of carbon dioxide but if there is problem in respiratory and circulatory system, for example, infection in throat due to pollution,etc. then this normal process of breathing gets affected which sometime may prove fatal to the person.

4 0
3 years ago
Create a hypothesis for this testable question: How does price affect the amount of chocolate people buy?
Wittaler [7]

Answer:

IF the price of chocolate increases, THEN the amount of chocolate people buy decreases

Explanation:

In a scientific investigation, an observation is first made. Based on this observation, a scientific question is then asked. However, a HYPOTHESIS is given next to explain the question asked. A hyothesis is a testable explanation given to solve an observed problem or provide a possible answer to a question.

The hypothesis must be subject to testing via EXPERIMENTATION. A hypothesis usually goes in an IF, THEN format. In this case with the testable question: How does price affect the amount of chocolate people buy?

A hypothesis that can explain this question is: IF the price of chocolate increases, THEN the amount of chocolate people buy decreases.

5 0
3 years ago
I will give the Branliest!!! In which body of water can you see your reflected image better, a pond or an ocean? Why? (Please ex
GREYUIT [131]

Answer:

I would say a pond

Explanation:

A pond is more still than an ocean, therefore you could see your reflection better

4 0
3 years ago
Read 2 more answers
A stretched spring has 5184 J of elastic potential energy and a spring constant of 16,200 N/m. What is the displacement of the s
Ira Lisetskai [31]
The elastic potential energy (Ep) is given by Ep =  \frac{1}{2}*k*x^2

Data:
Ep = 5184 J
k = 16200 N/m
x (displacement) = ?

Solving:
Ep = \frac{1}{2}*k*x^2
5184 = \frac{1}{2}*16200*x^2
5184*2 = 16200x^2
10368 = 16200x^2
16200x^2 = 10368
x^2 =  \frac{10638}{16200}
x^2 = 0.64
x =  \sqrt{0.64}
\boxed{\boxed{x = 0.8\:m}}\end{array}}\qquad\quad\checkmark

8 0
4 years ago
Read 2 more answers
Tarzan swings back and forth on a
WARRIOR [948]

Answer:

Considering Tarzan as a point mass at point L and using the equation for a simple pendulum:

P = 2 pi (L / g)1/2

P^2 = 4 pi^2 L / g

L = g P^2 / (4 pi^2) = 9.8 m/s^2 * 7.27^2 s^2 / (4 pi^2) = 13.1 m

4 0
3 years ago
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