[ Simple machine ] 1. In a machine 500N load is lifted upto 2m by applying an efforts
of 250N. if the effort covers a distance of 8m calculate:
a. MA
b. VR
load
c. Efficiency of a machine[Hint:MA=
effort
effort distance
VR=
Efficiency - Max100]
load distance

In positive numbers less than 1, the zeros between the decimal point and a non-zero number are blank significant

Determine the fraction of the magnitude of kinetic energy lost by a neutron (m1 = 1.01 u) when it collides head-on and elastically with a target particle at rest which is 21h (heavy hydrogen, m = 2.01 u).

Marcella is a four-year-old girl who is a victim of emotional child abuse. based on the child and family services improvement and innovation act of 2011, which action should the government take for marcella? a. the state should arrest marcella’s abuser. b. the state should find a home for marcella as soon as possible. c. the state should enforce stricter laws in the area where marcella resides. d. the state should provide medical assistance to marcella.