<span>Which electromagnetic waves have the shortest wavelengths and highest frequencies?
Gamma rays </span>
Answer: d boiling water
Explanation: the water is boiling and bubbling cause the molecules are so fast and they hit off each other
Answer:
Cumulonimbus
Hail development. Hail is a type of strong precipitation, which is shaped in rainstorms mists (Cumulonimbus). Tempests mists comprises of beads of fluid water (at temperatures lower than 0°с, the beads can be in a thermodynamically instable supercooled condition) and ice gems
Explanation:
Answer:
D) Acceleration is positive and increasing.
Explanation:
Acceleration is defined as the rate of change of velocity per unit time; in formulas:
where 
is the variation of velocity and 
is the variation in time.
The graph shows the velocity vs the time of a moving object. We can see that is the increment on the y-axis, while is the increment on the x axis: therefore, the ratio 
is the slope of the curve. In fact, in a velocity-time graph, the slope of the curve corresponds to the acceleration of the object.
In this particular graph, we see that the slope of the curve continues to increase: therefore, the acceleration is positive (because the slope is positive, since the velocity is increasing) and increasing (because the slope is increasing).
