unlike magnetic strips, which store only account information, an E-pusre or e-wallet stores funds on an integrated circuit chip.
- A digital wallet is an app used to carry out financial transactions on mobile devices (or electronic wallet).our passwords and payment details are securely stored there. Instead of carrying our cards with us while shopping, these programs let us pay using our mobile. we input and save the details of our credit card, debit card, or bank account so that we may use our smartphone to make purchases later on.
- The purpose of digital wallets is to increase access to financial goods and services by utilizing the capabilities of mobile devices. Due to its ability to safely and conveniently store all of a user's payment information, digital wallets effectively do away with the need to carry a traditional wallet.
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Answer:
300 kJ
Explanation:
There are two energy flows in this process.
Heat lost by iron + heat gained by water = 0
q₁ + q₂ = 0
-300 kJ + q₂ = 0
q₂ = 300 kJ
The water gained 300 kJ.
Answer:
(a) 
(b) 
Explanation:
Given:
- Limiting tension of snapping of the rope, T= 387 N
- Weight of the object to be lifted,
- ∴mass,
- height of letting down the weight, h = 6.1 m
(a)
Now,
The force to be compensated for being on the verge of snapping:
(T-w) = 62 N
Therefore, we need to produce and acceleration equivalent to the above force.
∵
(b)
From the equation of motion ,we have:
....................(2)
where:
u= initial velocity= 0 (here, starting from rest)
v= final velocity = ?
s= displacement =h =6.1 m
Now, putting the values in eq. (2)
is the velocity with which the body will hit the ground in the given conditions.
Answer:
These two forces are called action and reaction forces and are the subject of Newton's third law of motion. Formally stated, Newton's third law is: For every action, there is an equal and opposite reaction. The statement means that in every interaction, there is a pair of forces acting on the two interacting objects.
