Answer:
1. The predicted angle of diffraction with a 3 cm wavelength was degrees.
the answer is 57.3
2. The predicted angle of diffraction with a 4 cm wavelength was degrees.
the answer is 76.4
3. The predicted angle of diffraction with a 5 cm wavelength was degrees.
the answer is 95.5
Explanation:
Answer:
Most stars in the cluster are yellow or reddish in color. Most
Answer:
a) -4 N
b) +4 N
Explanation:
Draw a free body diagram for each block.
For the large block, there are 2 forces: 12 N pushing to the right, and F pushing to the left.
For the small block, there is 1 force, F pushing to the right.
There are also weight and normal forces in the vertical direction, but we can ignore those.
Sum of forces on the large block in the x direction:
∑F = ma
12 − F = 4a
Sum of forces on the small block in the x direction:
∑F = ma
F = 2a
2F = 4a
Substitute:
12 − F = 2F
12 = 3F
F = 4
The small block pushes on the large block 4 N to the left (-4 N).
The large block pushes on the small block 4 N to the right (+4 N).