Answer:
a) 42 m/s, positive direction (to the east), b) 42 m/s, negative direction (to the west).
Explanation:
a) Let consider that Car A is moving at positive direction. Then, the relative velocity of Car A as seen by the driver of Car B is:
42 m/s, positive direction (to the east).
b) The relative velocity of Car B as seen by the drive of Car A is:
42 m/s, negative direction (to the west).
Answer:
0072.00kW
Explanation:
1,200 hours multiply by 60W will give you 72000kW. Convert it to kW. That will give you 0072.00kW.
Answer: C
Gravitational Force
Weak Nuclear Force
Electromagnetic Force
Strong Nuclear Force
Explanation: i did the quiz on, a p e x
Answer:
Option B, The grating with 6000 lines produces the greater dispersion
Explanation:
The diffraction ability of the grating is equal to the angular dispersion which depends on the dispersion angle.
As per the equation
where
represent the angular dispersion, m represents the order, a represent the spacing of the lines with in the grit and D represents the diffraction angle.
As per the equation, angular dispersion is inversely proportional to the number of lines (grit line spacing). Thus, the spacing should be minimum to produce greater angular dispersion.
Hence, option B is correct