All categories

3 years ago

What happens to the particles of a substance as its temperature increases?

Physics

1 answer:

valentina_108 [34]3 years ago

6 0

Explanation:

Their average kinetic energy increases as is directly proportional to the rise of the Temperature

You might be interested in

A block of mass 2kg is acted upon by two forces: 3N (directed to the left) and 4N (directed to the right). What can you say abou

Marizza181 [45]

Answer:

The block will be move in to right side.

Explanation:

Given that,

Mass of block = 2 kg

First force = 3 N

Second force = 4 N

We need to calculate the acceleration

For first force,

Using newton's second law

$F= ma$

$a = \dfrac{F}{m}$

Put the value into the formula

$a=\dfrac{3}{2}$

$a=1.5\ m/s^2$

We need to calculate the acceleration

For second force,

$a=\dfrac{4}{2}$

$a=2\ m/s^2$

So, we can say that the block will be move to right side because the acceleration is maximum in to right side.

Hence, The block will be move in to right side.

3 0

3 years ago

Calculate the heat energy released when 17.7 g of liquid mercury at 25.00 °c is converted to solid mercury at its melting point.

maria [59]

Answer;

Q = 359.2-J

Explanation;

Given that;

Constants for mercury at 1 atm

Heat capacity of Hg(l) is 28.0 J/(mol*K)

melting point is 234.32 K

Enthalpy of fusion is 2.29 kJ/mol

17.7-g Hg / 200.6g/mol = 0.0882 mol Hg;

°C + 273 = 298 K;

2.29-kJ/mol = 2290-J/mol

Q = (m x ΔT x Cp) + (m x Hf)

Q = 0.0882-mol x (298 - 234.32) x 28.0-J/mol*K) + (0.0882-mol x 2290-J/mol)

Q = 157.26-J + 201.978-J

Q = 359.2-J

Q=359-J (3 sig fig allowed due to 17.7-g given in problem)

8 0

3 years ago

Describe how you could conduct an experiment to quantify photosynthesis under different conditions, such as different amounts of

Mama L [17]

different amounts of sunlight can be conducted throughout the world but some special are

Explanation:

take bisc(*- calcoihvx to ordz which makes to easy

6 0

3 years ago

Hooke's law describes a certain light spring of unstretched length 33.6 cm. when one end is attached to the top of a doorframe a

masha68 [24]

Missing question: "What is the spring's constant?"

Solution:
The object of mass m=6.89 kg exerts a force on the spring equal to its weight:
$F=mg=(6.89 kg)(9.81 m/s^2)=67.6 N$
When the object is attached to the spring, the displacement of the spring with respect to its equilibrium position is
$\Delta x=43.2 cm-33.6 cm=9.6 cm=0.096 m$
And by using Hook's law, we can find the constant of the spring:
$k= \frac{F}{\Delta x}= \frac{67.6 N}{0.096 m}=704.2 N/m$

4 0

4 years ago

Using an example, explain how being able to understand scientific principles and think scientifically can help you solve problem

Anna11 [10]

Let me give an example of a problem that is often encountered in the manufacturing industries. When they want to change the temperature of a product, they use heat transfer using shell or tube heat exchangers. The scientific principle behind this is heat transfer through convection. The equation would be

Q = hAΔT,
where
Q is the rate of heat transfer
h is the heat transfer coefficient determined empirically
A is the area of heat transfer
ΔT is the temperature difference

By knowing the final temperature, engineers could manipulate the amount of material used to determine the rate of heat transfer needed.

4 0

4 years ago