Answer:
A+B+C=7j+k
Explanation:
A=3i+4j
B=2i-2j+4k
C=i+5j-3k
A=3i+4j
+
B=<u>2</u><u>i</u><u>-</u><u>2</u><u>j</u><u>+</u><u>4</u><u>k</u>
i+2j+4k
A+B=i+2j+4k
+
C=<u>-i+</u><u>5</u><u>j</u><u>-</u><u>3</u><u>k</u>
7j+k
A+B+C=7j+k
Answer:
Relative to Carlos the Whataburger is moving at 0 speed.
Explanation:
Carlos speed, = 35 m/s
speed of another car, = -25 m/s
The speed of the Whataburger, = 35 m/s since it is in the same car as Carlos.
The relative of the Whataburger to Carlos is given as;
Therefore, Relative to Carlos the Whataburger is moving at 0 speed.
Answer:
Time = 0.187 secs
Explanation:
Parameters given:
Speed of hot air balloon = 1.60 m/s
Speed of toss = 10.7 m/s
Distance between passenger and friend at time of toss = 2m
To find the time given, we can simply divide the distance between the passenger and her friend by the speed of the toss. Mathematically,
Time = distance/speed
Time = 2/10.7
Time = 0.187 secs
Therefore, it takes 0.187 seconds for the camera to get to her.
Answer:
2270 full wavelengths.
Explanation:
The wavelength of the sound wave (assuming sound speed of ) is
.
Now, assuming the distance to the last row is 1947m, the number of wavelengths that fit into this distance are
which is 2270 full wavelengths.
Hence, there are 2270 full wavelengths between the stage and the last row of the crowd.