Science & Mathematics - 9 November 2006

2006-11-09 00:11:32 · 15 answers · asked by notgethithatonharry 2 in Zoology

How long it takes a tadpole to become a frog?

2006-11-09 00:08:09 · 6 answers · asked by Georgia K 1 in Zoology

2006-11-09 00:04:33 · 8 answers · asked by anaconda 1 in Physics

2006-11-09 00:03:55 · 9 answers · asked by robertf_9999 1 in Physics

1.A car's velocity as a function of time is given by Vsubscript of x(t)=alpha+beta*t^2,where alpha=3m/s & beta=0.100m/s^3.a.)calculate the average acceleration for the time interval t= 0 to t=5 sec.b.)calculate the instanteneous acceleration for i.)t=0;ii.)t=5 sec

2.A dog running in an open field has components of velocity Vsubscript x=2.6 m/s and Vsubscript y=-1.8 m/s at tsubscript 1 =10 s .For the time interval from t subscript 1 =10 s to t subscript 2 = 20 s,the average acceleration of the dog has magnitude 0.45 m/s^2 and the direction 31 degree measured from the +x-axis toward + y-axis. At tsubscript 2 =20 s, a.)What are the x and y components of the dog's velocity? b.)what are the magnitude and direction of the dog's velocity

3. Jillian angrily throws her engagement ring staright up from the roof of a building,12 m above the ground, with an initial speed of 5 m/s.you may ignore air resistance.For the motion from herhand to the ground,what are the magnitude & direction of a.)the average velocity of the ring? b.)the average acceletarion of the ring? c.)in how many seconds after being thrown does the ring strike the ground? d.) what is the speed of the ring just before it strikes the ground?

2006-11-09 00:01:43 · 2 answers · asked by khenzkey_wawa08 1 in Physics

2006-11-09 00:00:01 · 4 answers · asked by george_mrx 1 in Engineering