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
dusya [7]
3 years ago
11

Your lap feels warms because your laptop computer has been sitting on top it. This is an example of:

Physics
1 answer:
xxMikexx [17]3 years ago
5 0
Your lap feels warm because your laptop has been sitting on top of it. That is an example of conduction. Conduction means transferring temperatures in a direct contact method. Just like directly burning a paper. Conduction is the best answer among the three choices given. The answer is letter A.
You might be interested in
All living and nonliving material is composed of<br> (1) air (3) water<br> (2) elements (4) soil
Elan Coil [88]
Elements is the answer to this question
5 0
3 years ago
Read 2 more answers
PLS HELP ME<br> How does one stage in a stars life lead to another
Oxana [17]
Just as during formation, when the material contracts, the temperature and pressure increase. This newly generated heat temporarily counteracts the force of gravity, and the outer layers of the star are now pushed outward ( in not sure tho ) I hope this helps
3 0
3 years ago
Read 2 more answers
Is winking a genetic and why?
PolarNik [594]
Yes,and because not everyone can wink and often that someone can only wink with one eye only
4 0
4 years ago
Read 2 more answers
Plsss helpp will give brainliest!!!
Alexandra [31]

Answer:

1. Flexibility.

2. Muscular Fitness

3. Cardiovascular Fitness

4. Cardiovascular Fitness

5. Flexibility

6. Muscular Fitness

7. Cardiovascular Fitness

6 0
3 years ago
Monochromatic light falls on a metal surface that has a work function of 6.7 x 10-19 J. Each photon has an energy of 8.0 x 10-19
alina1380 [7]

Answer:

Correct answer: (a) Ekmax =  1.3 · 10⁻¹⁹ J, (b) ε = 5 eV, (c) f = 1.21 · 10¹⁵ Hz

Explanation:

Given:

photon energy  ε = 8 · 10⁻¹⁹ J

work function for metal  Wf = 6.7 · 10⁻¹⁹ J

(a) Ekmax = ?

The Einstein equation for photo effect is:

ε = Wf + Ekmax  ⇒ Ekmax = ε - Wf

Ekmax = 8 · 10⁻¹⁹ - 6.7 · 10⁻¹⁹ = 1.3 · 10⁻¹⁹ J

Ekmax =  1.3 · 10⁻¹⁹ J

(b)  ε = ? eV

the relationship between 1 eV and 1 J is:

1 eV = 1.6 · 10⁻¹⁹ J

so the energy of one photon in eV equals:

ε = 8 · 10⁻¹⁹ J = 8 · 10⁻¹⁹ / 1.6 · 10⁻¹⁹ eV = 5 eV

ε = 5 eV

(c)  f = ?

the energy of a single photon is calculated according to the formula:

ε = h · f  

where is:

h = 6.62 ·  10⁻³⁴ J s    plank constant

and f  frequency of each photon (electromagnetic radiation)

f = ε / h = 8 · 10⁻¹⁹ J / 6.62 ·  10⁻³⁴ J s = 1.21 · 10¹⁵ s⁻¹ =  1.21 · 10¹⁵ Hz

f = 1.21 · 10¹⁵ Hz

God is with you!!!

8 0
3 years ago
Other questions:
  • The product of the synthesis reaction between sodium and chlorine gas is ?
    5·1 answer
  • A Carnot engine is operated between two heat reservoirs at temperatures of 550 K and 300 K . 1.) If the engine receives 6.70 kJ
    12·1 answer
  • How much force is required to drag a 90 lb. box up this "frictionless" inclined plane? 109 lb. 10 lb. 81 lb. 9 lb.
    12·2 answers
  • The unit of electric potential or electromotive force is the
    5·1 answer
  • You're planning a party and need enough soda for 60 guests. Assuming each guest drinks 10 fl. oz of soda, how may liters of soda
    12·1 answer
  • The coefficient of friction on a surface is 0.25. A box requires 100N to slide it across the surface. What is the weight of the
    15·1 answer
  • USE THE PICTURE THANKS WILL GIVE B WRONG ANSWER=report lol love ya
    5·1 answer
  • What is the mass of a black hole which has the radius of the sun(696,340 km).​
    14·1 answer
  • 1. The law of reflection states that the angle of _______ is equal to the angle ofreflection
    11·1 answer
  • WILL GIVE BRAINLIEST!!!!!!!!!!!!!!!! WORTH 30 POINTS!!!!!!!!1 HELP!!!!! SHOW YOUR WORK!!!!!!!!!! Part II MATH: Newton’s 2nd Law
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!