True
Variables is changing. It is any factor, trait or condition that can exist in differing amounts or types. An experiment has three types: Independent, Dependent and Controlled.
Answer:
a) 0.64 b) 2.17m/s^2 c) 8.668joules
Explanation:
The block was on the ramp, the ramp was inclined at 20degree. A force of 5N was acting horizontal to the but not parallel to the ramp,
Frictional force = horizontal component of the weight of the block along the ramp + the applied force since the block was just about move
Frictional force = mgsin20o + 5N = 6.71+5N = 11.71
The force of normal = the vertical component of the weight of the block =mgcos20o = 18.44
Coefficient of static friction = 11.71/18.44= 0.64
Remember that g = acceleration due to gravity (9.81m/s^2) and m = mass (2kg)
b) coefficient of kinetic friction = frictional force/ normal force
Fr = 0.4* mgcos 20o = 7.375N
F due to motion = ma = total force - frictional force
Ma = 11.71 - 7.375 = 4.335
a= 4.335/2(mass of the block) = 2.17m/s^2
C) work done = net force *distance = 4.335*2= 8.67Joules
Answer:
huh what do u want tho its nothing bad
Explanation:
Answer:
The the intensity at an 11° angle to the axis in terms of the intensity of the central maximum is
Explanation:
From the question we are told that
The width of the slit is 
The wavelength is 
The angle is 
The intensity of at 
to the axis in terms of the intensity of the central maximum. is mathematically represented as
![I_c = \frac{I}{I_o} = [ \frac{sin \beta }{\beta }] ^2](https://tex.z-dn.net/?f=I_c%20%3D%20%5Cfrac%7BI%7D%7BI_o%7D%20%20%3D%20%5B%20%5Cfrac%7Bsin%20%5Cbeta%20%20%7D%7B%5Cbeta%20%7D%5D%20%5E2)
Where 
is mathematically represented as
substituting values
So
![I_c = \frac{I}{I_o} = [ \frac{sin (708.1) }{(708.1)}] ^2](https://tex.z-dn.net/?f=I_c%20%3D%20%5Cfrac%7BI%7D%7BI_o%7D%20%20%3D%20%5B%20%5Cfrac%7Bsin%20%28708.1%29%20%20%7D%7B%28708.1%29%7D%5D%20%5E2)
