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1. ### physics motion question.

... question. Is it 4 m at t = 2 s? Assume it is the case. Average velocity = (12 - 4)/(10 - 2) m/s = 1 m/s 3. Position...

2. ### 急!!F.1 Maths q thx !!! 22point

1. (a) The cost of the mixture = \$(72x + 97y)/(x + y) (b) (72x + 97y)/(x + y) = 82 72x + 97y = 82...10) - 82 × (15 + 10) = \$(120 - 82) × 25 = \$950 ===== 2. (a) Time interval that Winnie rests = [(60 - 58) + 14] min = 16 min (b...

分類：科學及數學 > 數學 2014年08月16日

3. ### reflection of light(20point)

... backward at 1 m/s. (b) In a time interval of 1 s, the distance between the boy and mirror becomes (3..., the displacement of the boy's image during this 1 s period = [4 - (3 - 1)] m = 2 m The speed...

4. ### Physics Problem

...conservation, mg(12.3) = (1/2)m(7.235)^2 + (1/2).(1.5)(7.235/0.5)^2 where m is the mass of stone, and g is the acceleration due to gravity (taken to be 10...

5. ### Exercise and Heart rate

... you plenty of feedback both during and after a session, teaching you... you make sure you work out at the right planned intensities...recovery days, enough recovery between intervals , etc.)Enables you to track and...

分類：科學及數學 > 生物學 2014年02月16日

6. ### PHYSICS UNIVERSITY

Apply equation: s= ut + (1/2)at^2 to the stone with s = 12.7 m, u = 0 m/s, t = 2.9 s, a =? hence, 12.7 = (1/2)a.(2.9...

7. ### Mechanics question

... a = 0.2. a) the velocity after an interval of 16 s from standstill Given u...u + at = 0 + 0.2*16 = 3.2 m/s b) the time required to attain a velocity...m/s and the distance travelled during that time. (i) Given u = 8.5...

8. ### Physics Wave Question (Urgent)

...586 radians i.e. at t = 2.586/92.6 s = 0.02793 s Therefore, time interval = (0.02793 - 0.006) s = 0.02193 s (b) since 2.pi/入 = 2.15 where 入 is the wavelength hence, 入 = 2.pi/2.15 m = 2.922 m Speed of wave = 入/T...

9. ### Physics Astronomy Q!20點!

...be given from nothing. The information you provided is the apparent magnitude at a specified time interval . It is by no means any position.Is that the only information...

10. ### 統計學 Hypothesis tests

...0.35, p_2 = 0.5, s.d. of p_1 = 0.06158, s.d. of p_2 = 0.06445 a 99% confidence interval of the proportion of passengers, who were given a pill, got...

分類：科學及數學 > 數學 2012年12月04日