Answer: The ratio of carnivorous species to all mammal species is 1:20
Explanation:
250:5000 = 250/250 = 1
250:5000 = 5000/250 = 20
Answer = 1:20
Answer:
- Because the mass is also 6 times greater, so the acceleration is the same.
Explanation:
Force is mass multiplied by acceleration. This is (in one dimension):
Now, we can see what acceleration will every rock feel:
Lets call the force over the first rock, that has a mass , and lets call the force over the second rock, that has a mass . We can write the following equations:
and
.
We also know that:
, so:
.
But the mass is also six times greater.
so...
.
Now, lets obtain the acceleration. For the first rock we got:
and for the second rock
But this is the same acceleration that the first rock has! So, the kinematics will be the same.
Answer:
Explanation:
log10 function is required to convert dB into intensity of a sound. Both are measures of loudness of a sound and the relationship can be expressed as follows:
dB = 10 log10(I/Io), where Io is 10^-12 W/m^2
Substituting, 82 = 10 log10(I/10^-12)
I = 0.0001585 W/m^2
or 1.58*10^-4 W/m^2
By definition, we have that the speed is given by:
Where,
d: distance traveled
t: time to travel said distance
Substituting values we have:
Then, rounding the obtained speed we have:
Answer:
Kenneth's average speed is:
v = 4.8 mph