Tangential speed = radius of track times angular velocity.v=r omega.(180,000/60x60)=r omega.2pi r = 2,400 metres -> r = 2,400/(2pi)(180,000/60x60)=2,400/(2pi) omega(180,000x2pi/60x60x2,400)= omega****************************************
The formular for determinatio of mass number is this:
Mass number = number of proton + number of neutron
From the question, we are told that:
Mass number = 39
Proton number = 19
Number of proton = ?
Number of neutron = mass number - number of proton
Number of neutron= 39 - 19 = 20
Therefore, number of neurtron = 20.
The answer is B the transverse waves move perpendicular to the direction the wave travels.
Longshore currents are affected by the velocity and angle of a wave. When a wave breaks at a more acute (steep) angle on a beach, encounters a steeper beach slope, or is very high, longshore currents increase in velocity. ... This process, known as “longshore drift,” can cause significant beach erosion.
