m = mass of the ball attached to friction less surface = 2 kg
r = radius of the circle in which the ball moves = 0.5 meter
T = tension force in the string = 16 N
F = centripetal force
centripetal force is given as
F = m v²/r
the centripetal force required to move in circle is being provided by the tension force here , hence we can write
T = F
T = m v²/r
Tr = m v²
v² = Tr/m
v = √(Tr/m)
inserting the values in the equation above
v = √(16 (0.5)/2)
v = 2 m/s
8. Energy travels in what direction?
9. Draw how the amplitude is measured.
8. This type of wave is known as a longitudinal wave , so named because the energy travels along the direction of vibration of the particles.
9. Amplitude is generally calculated by looking on a graph of a wave and measuring the height of the wave from the resting position. The amplitude is a measure of the strength or intensity of the wave. For example, when looking at a sound wave, the amplitude will measure the loudness of the sound.
Thermal energy transformation is taking place.
KINEMATICS
Uniform or constant motion in a straight line (rectilinear). Speed or velocity constant and/or acceleration constant. If motion is up and down and/or has an up and down component then acceleration omn earth will be g. g is about 10m/s/s.
speed = distance/time
velocity = displacement/time
s=distance ... u=initial speed ... v = final speed ... a = acceleration ... t = time
v=u+at
v^2=u^2+2as
s=ut+1/2at^2
Most of the mass is located in the nucleus as suggested by Rutherford's gold foil experiment.