2.062s
0.970s
0.485s
0.242s
Correct answer is C
t = \(\frac{2x}{v} = \frac{2 \times 80}{330} = 0.485s\)
0.0
1
2
5
Correct answer is C
No explanation has been provided for this answer.
A magnified and virtual image of a near object is produced by
prism binoculas
astronomical telescope
periscope
simple microscope
Correct answer is D
No explanation has been provided for this answer.
Downward from left to right
Upwards from left to right
Downwards from right to left
Upwards from the origin
Correct answer is A
No explanation has been provided for this answer.
atmospheric pressure is higher at the surface than at the higher altitudes
speed of sound is less than that of light
temperature of the atmosphere decreases with altitude
atmospheric density decreases with altitude
Correct answer is B
No explanation has been provided for this answer.