If the magnitude of the cross product of two vectors is one-half the dot product of the same vectors, what is the angle between the two vectors?

What will be an ideal response?


26.6°

Physics & Space Science

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Free Fall: A test rocket at ground level is fired straight up from rest with a net upward acceleration of 20 m/s2. After 4.0 s, the motor turns off but the rocket continues to coast upward with insignificant air resistance. What maximum elevation does the rocket reach?

A. 160 m B. 330 m C. 320 m D. 410 m E. 490 m

Physics & Space Science

One of two identical buildings is nearby; the other is twice as far away as the first. The angular size of the more distant building is ________ the nearby building's angular size.

A. the same as B. one half C. two times D. four times E. one fourth

Physics & Space Science

Novae always occur in a close binary star system

Indicate whether the statement is true or false

Physics & Space Science

Secondary wavelets spread from a wave with

A) reduced speed. B) an unchanging speed. C) an increased speed. D) none of the above

Physics & Space Science