What was the speed of Object A when it meets Object B?* 10 points
100
distance (metres)
object A>
Robject B
time (seconds)
O 5 m/s
O 0.2 m/s
Ο Ο Ο Ο
O 200 m/s
O 10 m/s

Which is the correct symbol for an isotope of iodine with 53 protons and 78 neutrons?

Acertain radio station broadcasts radio waves that have a wavelength of 298cm what is its broadcast frequency?

An ideal otto cycle has a compression ratio of 10.5, takes in air at 90 kpa and 40°c, and is repeated 2500 times per minute. using constant specific heats at room temperature, determine the thermal efficiency of this cycle and the rate of heat input if the cycle is to produce 90 kw of power.