Question

Please help me on this.

9. Suppose A = B^n C^m, where A has dimensions L^10 T^4, B has dimensions L^2 T ^− 1, and C has dimensions L^2T ^2. Then the exponents n and m have the values:   

Group of answer choices

n = -1  and m = 2

n = 3/5 and  m =4/5

n = 2 and m= 3

n = 4/5 and m = −1/5

n = 1/4 and m = 3/4

13. Consider the position of a particle moving along the x-axis to be given by  

x = 4 t ³ +  5 t ² where x is meters and t in seconds. What is the instantaneous acceleration of the particle at t = 4 s. Please round your answer to the nearest whole number (integer).

Use this equation: a = d 2 x d t 2 This is the second derivative x of with respect to  t.

20. A ball is shot vertically upward with a given initial velocity. It reaches a maximum height of 115 m before it stops momentarily. What is the initial velocity (in m/s) of the ball? Take the acceleration due to gravity, g = 9.80 m/s². Please round your answer to one decimal place.

Answer 1

Note:As per HOMEWORKLIB RULES only 1Q per chance, please post the other questions separately

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