Question

Please Please Please Help Me In These Physics Questions!!!!!!!!!!!!!!!! ASAP!!!!!!!!

Answer 1

#11: Impulse(I)=FΔt; Δt=T final - T initial/or rather given time
                       =4.16×10⁻⁴(1.84×10⁶)
                       =7.65×10²Ns
#12: Spring Force(F)=kx; k-spring constant
                                         x-extension
by making k subject of the formula:
spring constant(k)=F/x
 =3.92×10²/3.84×10⁻³
                             =1.02×10*5N/m
#13: Spring potential(U)= 1/2 kx²
                                      = 1/2(9.33×10³)(4.95×10⁻²)²
                                      =1.14×10*1J
#14: Centripetal Force(Fc)=m(v²/r)
                                          =ma; v²/r=a

         making m subject of formula:
                                       m=Fc/a
                                          =7.56×10³/6.14×10*-1
                                          =1.23×10*4kg
#15: From definition of Fc, it can be noted that acceleration a=v²/r
        making v(speed) subject of formula;
                                         v=√ar
                                           =√4.92×10⁻¹ (2.43×10¹)
                                           =3.46×10*0m/s           

Hope this helps!