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
Step2247 [10]
3 years ago
6

Can you answer this question about work and force?

Physics
1 answer:
velikii [3]3 years ago
8 0
112.5 Joule....its for A
You might be interested in
What are the agonist and antagonist muscle of a wrist joint???
oksian1 [2.3K]
Wrist flexors are the agonist muscles, while wrist extensors are the muscle antagonists. The specific names are the flexor digitorum and the extensor digitorum.
4 0
3 years ago
Read 2 more answers
Zeros are never significant digits true or false
liraira [26]
This affirmative is false
7 0
3 years ago
Read 2 more answers
The work function for tungsten metal is 4.52eV a. What is the cutoff (threshold) wavelength for tungsten? b. What is the maximum
Tanya [424]

Answer: a) 274.34 nm; b) 1.74 eV c) 1.74 V

Explanation: In order to solve this problem we have to consider the energy balance for the photoelectric effect on tungsten:

h*ν = Ek+W ; where h is the Planck constant, ek the kinetic energy of electrons and W the work funcion of the metal catode.

In order to calculate the cutoff wavelength we have to consider that Ek=0

in this case  h*ν=W

(h*c)/λ=4.52 eV

λ= (h*c)/4.52 eV

λ= (1240 eV*nm)/(4.52 eV)=274.34 nm

From this h*ν = Ek+W;  we can calculate the kinetic energy for a radiation wavelength of 198 nm

then we have

(h*c)/(λ)-W= Ek

Ek=(1240 eV*nm)/(198 nm)-4.52 eV=1.74 eV

Finally, if we want to stop these electrons we have to applied a stop potental equal to 1.74 V . At this potential the photo-current drop to zero. This potential is lower to the catode, so this  acts to slow down the ejected electrons from the catode.

5 0
3 years ago
To maintain your body temperature your body converts chemical potential energy into thermal energy true or false
max2010maxim [7]
 It's is True that your body temperature your body converts chemical potential energy into thermal energy
7 0
3 years ago
Read 2 more answers
The diagram shows a screwdriver being used as a lever to open a tin
Musya8 [376]

Answer:

(a) Most reactive {}       Metal B

{}                                    Metal D

{}                                    Metal A

Least reactive {}           Metal C

(b) (i) Bubbles should form very slowly

(ii) No reaction takes place

Explanation:

(a) The given metals arranged in their order of reactivity are;

Most reactive {}       Metal B

{}                               Metal D

{}                               Metal A

Least reactive {}      Metal C

The other of reactivity is based on the nature of their reactivity of the metals in air

(b) (i) Based on the reactivity of the metals in air, whereby metal A reacts very slowly and an oxide is formed, we have that, based on the reactivity of the metal A, when mixed with dilute hydrochloric acid, bubbles should form very slowly

(ii) Similarly, given that metal C is unreactive, we have that when small pieces of metal C are added to dilute hydrochloric acid, no reaction takes place.

7 0
3 years ago
Other questions:
  • 2. Două surse coerente oscileaza cu frecventa de 1 Hz, iar undele generate de elel se propaga pe suprafața apei cu viteza de 1,
    7·1 answer
  • Prisons are typically under whose control?
    8·1 answer
  • What is the acceleration of a skier that goes from 2.50 m/s to 14.5 m/s while traveling 505 m down a slope?
    10·1 answer
  • Calculate the kinetic energy of a car that travels at a speed of 20 m/s and has a mass of 1200 Kg
    15·1 answer
  • Explain what the ionosphere is and how it interacts with some radio waves.
    13·1 answer
  • An object is moving in a straight line at constant speed. A resultant torce begins to act upon
    6·1 answer
  • Answer this please.____
    13·1 answer
  • A merry go round at the park is spinning. You stand on the outer edge and are traveling at constant speed of 5 m/s. You walk hal
    10·1 answer
  • Pressure due to a heel of the pointed shoe is greater than the pressure of the elphant legs​
    11·1 answer
  • An object of mass M is placed on a disk that can rotate. One end of a string is tied to the object while the other end of the st
    10·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!