Question

A body vibrate in s.h.m with a frequency of 100Hz and a mplitude of 4cm.find the period,the acceleration at the middle and at the end of the path oscillation,the velocity at the middle and at end of path of oscillation

Answer 1

4 cm = 0.04 meter
y = 0.04 sin (2 pi t/T)
when 200 pi t = 2 pi , t =T
T =0.01 second
say x = A sin (2pi t/T)
then
v = 2 pi/T A cos(2 pi t/T)
a = -(2 pi/T)^2 A sin (2pi t/T) = -(2 pi/T) x
I think you can plug in x = 0, x = A = 0.04

Answer 2

X-ray technicians wear protective gear to keep them safe from the X-rays. Why are X-rays dangerous?(1 point)

They have long wavelengths that can penetrate materials, and their low energy can damage matter.
They have long wavelengths that can penetrate materials, and their low energy can damage matter.

They have short wavelengths that can penetrate materials, and their high energy can damage matter.
They have short wavelengths that can penetrate materials, and their high energy can damage matter.

They have long wavelengths that can penetrate materials, and their high energy can damage matter.
They have long wavelengths that can penetrate materials, and their high energy can damage matter.

They have short wavelengths that can penetrate materials, and their low energy can damage matter.?
help pls