On foot= 1 kilometer per 5 minutes
Bike= I kilometer per 2 minutes
3 minutes fast per mile on bike
Answer:
False.
Explanation:
Lets assume our positive direction to the right (this reasoning works for any direction). A negative velocity would then be then directed to the left. If it varies as such that it aproaches to zero, it means that the variation is directed to the right, and that is where the direction of the acceleration must be pointing. In other words, its losing its velocity, so the acceleration must point opposite to the velocity. Then it means the acceleration is positive.
Answer:
5 atoms of Boron
Explanation:
Boron makes up approximately 15.944% of the mass and the rest of the 84.056% is Fluorine. There is 5 Atoms because Boron atomic mass is 10.811 in 1 molecule of BF3 and you wanted 5 Molecules.
For any electromagnetic wave, the relationship between frequency and wavelength is given by
where
is the wavelength
c is the speed of light (the speed of the electromagnetic wave)
f is the frequency
For the X-rays in our problem, the frequency is
, while the speed of light is
, so the wavelength of this radiation is
A. long-wave radiation occupies a smaller percentage than short-wave radiation
