Answer:
The mass of the body is 2.2 kg.
Explanation:
Given that,
Force acting on a body 1, ![F_1=20\ N](https://tex.z-dn.net/?f=F_1%3D20%5C%20N)
Force acting on a body 2, ![F_2=35\ N](https://tex.z-dn.net/?f=F_2%3D35%5C%20N)
Direction, ![\theta=80^{\circ}](https://tex.z-dn.net/?f=%5Ctheta%3D80%5E%7B%5Ccirc%7D)
Acceleration, ![a=20\ m/s^2](https://tex.z-dn.net/?f=a%3D20%5C%20m%2Fs%5E2)
To find,
Mass of the body.
Solution,
Let F is the net force acting on the body. It is given by :
![F=\sqrt{F_1^2+F_2^2+2F_1F_2\ cos\theta}](https://tex.z-dn.net/?f=F%3D%5Csqrt%7BF_1%5E2%2BF_2%5E2%2B2F_1F_2%5C%20cos%5Ctheta%7D)
![F=\sqrt{20^2+35^2+2\times 20\times 35\ cos(80)}](https://tex.z-dn.net/?f=F%3D%5Csqrt%7B20%5E2%2B35%5E2%2B2%5Ctimes%2020%5Ctimes%2035%5C%20cos%2880%29%7D)
F = 43.22 N
Second law of motion is given by :
F = ma
![m=\dfrac{F}{a}](https://tex.z-dn.net/?f=m%3D%5Cdfrac%7BF%7D%7Ba%7D)
![m=\dfrac{43.22\ N}{20\ m/s^2}](https://tex.z-dn.net/?f=m%3D%5Cdfrac%7B43.22%5C%20N%7D%7B20%5C%20m%2Fs%5E2%7D)
m = 2.16 kg
or
m = 2.2 kg
So, the mass of the body is 2.2 kg.
Nuclear fusion is the process by which multiple nuclei join together to form a heavier nucleus.
Nuclear fusion of light elements releases the energy that causes stars to shine and hydrogen bombs to explode.
Nuclear fusion of heavy elements (absorbing energy) occurs in the extremely high-energy conditions of supernova explosions.
Nuclear fusion in stars and supernovae is the primary process by which new natural elements are created.
It is this reaction that is harnessed in fusion power.
It takes considerable energy to force nuclei to fuse, even those of the lightest element, hydrogen.
Answer:
3.96 meters / sec
Explanation:
The skaters Kinetic Energy is converted to Potential Energy ( ignoring friction)
KE = PE
1/2 * 55 * v^2 = 55 * 9.81 * .8
solve for v = 3.96 m/s
To solve this problem it is necessary to express the term of the wavelength of continuous x-rays according to the Planck constant, the speed of light, the charge of the electron and the voltage. This definition is expressed mathematically as
![\lambda = \frac{hc}{eV}](https://tex.z-dn.net/?f=%5Clambda%20%3D%20%5Cfrac%7Bhc%7D%7BeV%7D)
Here,
h is Planck's constant
c is speed of light
e is charge of electron
V is the potential to which the electrons are accelerated.
From this definition we can see that the wavelength is independent of the mass of the target material. Therefore the wavelength will remain the same.