Rank of the radiation particles according to their ability to penetrate solid objects, from the best able to penetrate to the least able to penetrate:
C ) gamma particle, beta particle, alpha particle.
Explanation:
Sound travels faster In solids than liquid than gases
Speed of sound is highest in solids, and higher in liquids and slower in gases. Example- Sound travels in air with the speed of 330 m/s, In steel it travels with a speed of 5920 m/s, In liquids it travels with a speed of 5000 m/s.
Hope this helps you
Answer:
gs = 0.6 m/s^2
Explanation:
Given data:
velocity = 12 m/s
height s = 12t -(1/2) g_s t^2
Given velocity is the derivatives of height
when velocity tend to 0 , maximum height is reached
at t = 20 sec ball reached the max height, so
Answer:
velocity maximum = 21.6 ft /s
frequency = 16.88 Hz
Explanation:
Amplitude, A = 0.24 in = 0.02 ft
maximum acceleration, a = 225 ft/s\
The formula for maximum acceleration is
a = ω² A
225 = ω² x 0.02
ω² = 11250
ω = 106.06 rad/s
Maximum velocity, v = ω A
v = 106.06 x 0.02 = 2.1 ft/s
Let f be the frequency
ω = 2 x 3.14 x f
f = 106.06 / (2 x 3.14) = 16.88 Hz
