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
scZoUnD [109]
3 years ago
15

if heat energy is transferred from direct contact between a warm and a cold object it has been transferred by what ?

Physics
1 answer:
Katarina [22]3 years ago
5 0

When heat energy is transferred from direct contact between a warm and a cold object , it is known as heat transfer by conduction.

In conduction, the heat transfer takes place within an object or between two objects in contact until the temperature becomes uniform. this kind of heat transfer continues until the temperature at two ends between which the heat transfer take place , becomes equal.  Heat transfer takes place from point at high temperature to point at lower temperature.

You might be interested in
A car accelerates for 10 seconds. During this time, the angular
bagirrra123 [75]

Answer:

the angular acceleration of the car is 1.5 rad/s²

Explanation:

Given;

initial angular velocity, \omega_i = 10 rad/s

final angular velocity, \omega_f = 25 rad/s

time of motion, t = 10 s

The angular acceleration of the car is calculated as follows;

a_r = \frac{\omega_f - \omega_i }{t} \\\\a_r = \frac{25-10}{10} = 1.5 \ rad/s^2

Therefore, the angular acceleration of the car is 1.5 rad/s²

4 0
3 years ago
From the photoelectric effect we learn that A. a blue photon has less energy than a red photon B. a blue photon has equal energy
emmainna [20.7K]

Answer: E. None of the above

Explanation: The energy of a photon is given by the formula below.

E=hf or E = hc/λ

E = energy, h = planck constant, c= speed of light and

λ= wavelength.

From E=hf we can see that energy is directly proportional to frequency since h is a constant, this implies that as we move up the visible light spectrum, red light has the least frequency this accounting for the lowest energy while violet has the largest energy accounting for a very high energy.

Blue light is higher in the spectrum than red light.

This implies that blue light has more energy than red.

Visible light is part of the electromagnetic spectrum which implies that they all travel with the same speed of a constant value ( speed of light = 3* 10^8 m/s).

Thus in conclusion, blue light has more energy that red light but they both travel with the same speed.

This point nullifies the options thus making none of it correct.

5 0
4 years ago
What is the order of magnitude of the gravitational force between two 1.0 kilogram charges that are positioned 1.0 meter apart?
stiks02 [169]

The answer is  -11

Enjoy!

6 0
3 years ago
Which of the following relationships is correct?
masha68 [24]

Answer:

a. Relative humidity increases: a decrease in temperature without a change in the amount of water vapor in the atmosphere.

Explanation:

Colder air requires less humidity to saturate compared to warmer air. Therefore, the relative humidity depends on the air temperature. If the temperature drops and the water vapor content remains the same, relative humidity increases. If the temperature increases and the water vapor content remains the same, relative humidity decreases. Additionally, a greater amount of water vapor in the air increases the relative humudity.

3 0
3 years ago
An ultrasonic tape measure uses frequencies above 20 MHz todetermine dimensions of structures such as buildings. It does so byem
ohaa [14]

Answer:  

a) 1m

b) 2μs

c) 3mm

Explanation:

3 0
3 years ago
Other questions:
  • Boyle's law says that the volume of a gas varies inversely with the pressure. When the volume of a certain gas is 4l , the press
    12·1 answer
  • identify a major advantage and a major disadvantage of using a renewable resources to produce electricity
    11·2 answers
  • The drawing shows an equilateral triangle, each side of which has a length of 2.00 cm. Point charges are fixed to each corner, a
    6·1 answer
  • What is the equivalent resistance between points a and b in the figure?
    11·1 answer
  • Draw the curve for determining the value of g using compound pendulum.
    11·1 answer
  • a student viewing a cell with a microscope observe a cell wall, a cell membrane,and a nucleus. The presence of these structures
    7·1 answer
  • Mady has an infinite number of balls and empty boxes available to her. The empty boxes, each capable of holding four balls, are
    14·1 answer
  • What do light waves travel the fastest through?
    10·2 answers
  • Supongamos que a su mamá se le rompió sus espejuelos para leer. El punto de acercamiento (near point) del ojo de su mamá se encu
    9·1 answer
  • What is force??????<br> ⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀​
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!