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how much should be invested now (to the nearest $)to receive $ 24000 per annum in perpetuity if the annual rate of interest is
1. 0 answers
2. 472 views
An infinitely long wire carries a current I=100amp . Below the wire a rod of length L=10cm is forced to move at a constant speed
1. 1 answer
2. 662 views
When the sun is in the zenith and the sky is perfectly clear, the solar power we receive on the surface of the earth is roughly
1. 3 answers
2. 1,065 views
A man of mass 70 kg is in free fall in the air. He reaches a terminal speed of about v_term = 54 m/s. (Note that v_term >>
1. 2 answers
2. 545 views
A man of mass 70 kg is in free fall in the air. He reaches a terminal speed of about v_term = 54 m/s. (Note that v_term >>
1. 0 answers
2. 348 views
When the sun is in the zenith and the sky is perfectly clear, the solar power we receive on the surface of the earth is roughly
1. 0 answers
2. 607 views

It should be in watts. so 2/PI kw-hr should be 2*1000/(PI*3600)watts or ? please
a)m=0.6, v=6 k=1/2*m*v^2 b)m=0.6, k=25 k=1/2*m*v^2 v=sqrt(2*k/m) c)w=k_2-k_1
k=25, x=2cm=0.02m w=1/2*k*x^2
m=58gm=0.058kg, u=0, V=45m/s, s=44cm=0.44m so, v^2=u^2+2*a*s a=2301.136m/s^2 F=ma F=0.058*2301.136=133.466N check it if correct

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