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Oksana_A [137]
3 years ago
10

How will heat flow between objects?

Physics
2 answers:
zzz [600]3 years ago
5 0
Without an external agent doing work,heat will always flow from a hotter to a cooler object. Two objects of different temperature always interact. There arethree different ways for heat to flowfrom one object to another. They areconduction, convection, and radiation



How hope this helps❤
Pachacha [2.7K]3 years ago
3 0

Question: How will heat flow between objects?

from the colder object to the warmer object

from the bottom object to the object on top

from the warmer object to the colder object

back and forth between objects of equal temperature

Answer: Without an external agent doing work, heat will always flow from a hotter to a cooler object. Two objects of different temperature always interact. There are three different ways for heat to flow from one object to another. They are conduction, convection, and radiation.

Conduction: The process by which heat or electricity is directly transmitted through a substance when there is a difference of temperature or of electrical potential between adjoining regions, without movement of the material.

Convection: The movement caused within a fluid by the tendency of hotter and therefore less dense material to rise, and colder, denser material to sink under the influence of gravity, which consequently results in transfer of heat.

Radiation: The emission of energy as electromagnetic waves or as moving subatomic particles, especially high-energy particles that cause ionization.

Hope this helps, have a good day. c;

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An object is attached to a hanging unstretched, ideal and massless spring and slowly lowered to its equilibrium position, a dist
Ad libitum [116K]

Answer:

10.6cm

Explanation:

We are given 5.3cm below the starting point (spring extension).

Therefore, to find static vertical equilibrium, we use the equation:

kx = mg

Where:

k = spring constant =

=mg/5.3 kg/s²

We are told the object was dropped from rest.

Therefore:

loss in potential energy = gain in spring p.e

Let's use the expression:

mgx = ½kx²

We are asked to find the stretch at maximum elongation x.

To find x, we make x subject of the formula.

Therefore, we have:

x = 2mg/k (after rearranging the equation above)

x = (2mg) / (mg/5.3)

x = 10.6cm

3 0
2 years ago
The speed of light is 3.0 x 108 m/s. How far does light travel in one day? Remember that you should first convert the day into s
Anna35 [415]

Answer:

2.59\times 10^{13}\ m

Explanation:

The speed of light is 3.0 x 10⁸ m/s

We need to find the distance traveled by it in one day.

1 day = 24 hours

1 day = 24 × 3600 seconds

= 86400 s

Now, using the formula of speed to find the distance covered as follows :

d=v\times t

Putting all the values, we get :

d=3\times 10^8\ m/s\times 86400\ s\\\\d=2.59\times 10^{13}\ m

Hence, light will cover 2.59\times 10^{13}\ m of distance in one day.

6 0
2 years ago
A large aquarium of height 5.00 m is filled with fresh water to a depth of 2.00 m. One wall of the aquarium consists of thick pl
earnstyle [38]

Answer:

total force =   4.704 × 10^5 N

Explanation:

given data

height = 5 m

depth = 2 m

thick plastic = 8.00 m

depth = 4.00 m

solution

first we get here force in which aquarium fill with depth 2 m

dF = PdA   ......1

F = ∫PdA

F = ∫ϼgy(wdy)

F = ϼgw ∫ y dy

F =  ϼgw × \frac{y^2}{2}    .................2

F = 1000 \times 9.8 \times 8 \times \frac{2^2}{2}  

F = 1.568 × 10^5 N

and

now we get here force for depth 4 m

put here value in equation 2

F = 1000 \times 9.8 \times 8 \times \frac{4^2}{2}  

F = 6.272 × 10^5 N  

so that here

total force will be

total force =  6.272 × 10^5 N   -  1.568 × 10^5 N

total force =   4.704 × 10^5 N

6 0
2 years ago
A car travels on a banked circular curve at constant speed. All four of the car's tires roll without slipping. The car moves at
kvv77 [185]

Answer:

b. The horizontal component of the normal force acts toward the center of the circle.

Explanation:

When a car on a banked turn move with just the right speed so that the frictional force is zero, a component of the normal force -which is always perpendicular to the surface- acts as the centripetal force on the car. This is because the normal force now has a horizontal component, and this component supplies the centripetal force.

7 0
2 years ago
What is the wavelength of a sound <br> Wave moving at 340 mls with a Frequency<br> of 256Hz ?
AysviL [449]

Answer: 1.33 metres

Explanation:

Given that:

Wavelength (λ)= ?

Frequency F = 256Hz

Speed of sound wave = 340 m/s

So, apply the formula:

Wavespeed = frequency x wavelength

i.e V = F λ

340m/s = 256Hz x λ

λ = (340m/s ➗ 256Hz)

λ = 1.328 m (Round to the nearest hundredth which is 1.33 m)

Thus, the wavelength of a sound wave is

1.33 metres

6 0
3 years ago
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