Answer:
![a=0.6\ m/s^2](https://tex.z-dn.net/?f=a%3D0.6%5C%20m%2Fs%5E2)
Explanation:
The attached figure shows the whole description. Considering the applied force is 100 N.
The acceleration of both blocks A and B, ![a=0.8\ m/s^2](https://tex.z-dn.net/?f=a%3D0.8%5C%20m%2Fs%5E2)
Firstly calculating the mass m using the second law of motion as :
F = ma
m is the mass
![m=\dfrac{F}{a}](https://tex.z-dn.net/?f=m%3D%5Cdfrac%7BF%7D%7Ba%7D)
![m=\dfrac{100\ N}{0.8\ m/s^2}](https://tex.z-dn.net/?f=m%3D%5Cdfrac%7B100%5C%20N%7D%7B0.8%5C%20m%2Fs%5E2%7D)
m = 125 kg
It suddenly encounters a surface that supplies 25.0 N a friction, F' = 25 N
![(F-F')=ma](https://tex.z-dn.net/?f=%28F-F%27%29%3Dma)
![(100-25)=125\times a](https://tex.z-dn.net/?f=%28100-25%29%3D125%5Ctimes%20a)
![a=\dfrac{75}{125}=0.6\ m/s^2](https://tex.z-dn.net/?f=a%3D%5Cdfrac%7B75%7D%7B125%7D%3D0.6%5C%20m%2Fs%5E2)
So, the new acceleration of the block is
. Hence, this is the required solution.
Answer:Near-field communication
Explanation:
Near Field Communication is an umbrella term that applies to location-aware technologies that allow devices to communicate securely with each other over short distances. Near-field communication is a short-range wirelessconnectivity standard that uses magnetic field induction to enable communication between devices when they're touched together, or brought within a few centimeters to each other.It also specifies a way for the devices to establish a peer-to-peer network to exchange data. After the peer to peer network has been configured, another wireless communication technology, such as Bluetooth or Wi-Fi, can be used for longer-range communication or for transferring larger amounts of data.
Celestial bodies in the universe like the stars, gain their energy by nuclear fusion. This is a nuclear reaction that emits radiation by joining subatomic particles together to yield another new element. This cause by instability of certain elements due to their high neutron-to-proton ratio. The most stable element there is, is Fe-26. Elements lighter than Fe-26 are most likely to undergo nuclear fusion (combining), while elements heavier than Fe-26 are most likely to undergo nuclear fission (breaking).
So that is how the Sun gains its energy. It is very abundant in hydrogen, such that hydrogen undergoes nuclear fusion. Two protons from two hydrogen atoms combine at very very high temperatures to form a Helium atom. Therefore, a high-mass star life is very abundant in Hydrogen, while a low-mass star life is very abundant in Helium.
no. energy is not created or destroyed, just transformed.
a hot light source is less efficient than a cold one ... heat is not light ...