Answer:
Birds in different areas were exposed to different food sources.
Explanation:Im almost 100 percent this is it.
Hi,
Wavelength:
1.Wavelength m<span>easures the distance from one point of a wave to the same point on an adjacent wave.
2.Wavelengths are measured in nanometres.
3.The wavelength of the wave is inversely proportional to the energy of the wave.
Frequency:
1.Fr</span><span>equency represents how many waves are produced from the source per second.
2.F</span><span>requencies are measured in hertz or waves per second.
3.</span><span>The frequency is linearly proportional to the energy of the wave.
Hope this Helps you.</span>
Answer:
b. Friction decreased when he went from pavement to ice and then increased two more times.
Explanation:
Frictional force depends on the normal force of the surface and a friction coefficient.
![F_{f} = -\mu N](https://tex.z-dn.net/?f=F_%7Bf%7D%20%3D%20-%5Cmu%20N)
Since we're talking about the same car, the value of
will remain constant whereas μ will represent the change in the frictional coefficient of the surface. Now we consider the different surfaces, cars will slide in an icy road which means that the frictional coefficient is smaller than the pavement.
After Joshua returns to the pavement road, the resulting frictional force increases and will do so one more time when he reaches the gravel road. Gravel roads have greater frictional coefficients than pavement roads which means the frictional force will increase a second time.
Answer:
water at 4°c that's abnormal stage of water
Series,effective resistance =R₁+R₂+R₃...
parallel,effective resistance 1/R=1/R₁ +1/R₂ +1/R₃...
Here,effective resistance 1/R =1/7 +1/5+ 1/4+1/2
=1.092
R = 1/1.092 =0.915Ω
voltage V=9 V
current I=V/R
I=9 / 0.915
=9.83 A