A cyclist travels at
a speed of 20 km/hr How far will he travels in 50 minutes.

16.7 km.

Step-by-step explanation:

1) use the formula: S=v*t, where S - distance, v - velosity, t - time.

2) the velocity should be converted from km/h into km/min: v=20 km/h=20/60 km/min=1/3 km/min;

3) after the substitution into the formula:

S=1/3*50=50/3≈16.7 km.

the answer is: d) o, f, and kr.

atomic radius of bromine (br) is 114 pm.

atomic radius of oxygen (o) is 73 pm.

atomic radius of fluorine (f) is 72 pm.

atomic radius of krypron (kr) is 112 pm.

the atomic radius of a chemical element is a measure of the size of its atom.

the atomic radius varies with increasing atomic number, but usually increases because of increasing of number of electrons.

the atomic radius decreases across the periods because an increasing number of protons, because greater attraction between the protons and electrons.

answer: your answer is c

step-by-step explanation: