Well,
For the first one, the answer would be C, because all organisms in Kingdom Animalia must eat in order to survive.
For the second one, all of the options are in Kingdom Animalia, but worms (A) and clams (C) are invertebrates. So that leaves options B and D.
(a) The required magnitude of the electric field when the point charge is an electron is 5.57 x 10⁻¹¹ N/C.
(b) The required magnitude of the electric field when the point charge is an proton is 1.02 x 10⁻⁷ N/C.
<h3>
Magnitude of electric field </h3>
The magnitude of electric field is given by the following equation.
F = qE
But F = mg
mg = qE
E = mg/q
where;
- E is the electric field
- m is mass of the particle
- g is acceleration due to gravity
- q is charge of the particle
<h3>For an electron</h3>
E = (9.11 x 10⁻³¹ x 9.8)/(1.602 x 10⁻¹⁹)
E = 5.57 x 10⁻¹¹ N/C
<h3>For proton</h3>
E = (1.67 x 10⁻²⁷ x 9.8)/(1.602 x 10⁻¹⁹)
E = 1.02 x 10⁻⁷ N/C
Thus, the required vertical electric field is greater when the charge is proton.
Learn more about electric field here: brainly.com/question/14372859
#SPJ1
First, let's put 22 km/h in m/s:
![22 \frac{km}{h} \times \frac{1000m}{1km} \times \frac{1h}{3600s}=6.11 \frac{m}{s}](https://tex.z-dn.net/?f=22%20%5Cfrac%7Bkm%7D%7Bh%7D%20%5Ctimes%20%20%5Cfrac%7B1000m%7D%7B1km%7D%20%20%5Ctimes%20%20%5Cfrac%7B1h%7D%7B3600s%7D%3D6.11%20%5Cfrac%7Bm%7D%7Bs%7D%20%20)
Now the radial force required to keep an object of mass m, moving in circular motion around a radius R, is given by
![F_{rad}=m \frac{v^2}{R}](https://tex.z-dn.net/?f=F_%7Brad%7D%3Dm%20%5Cfrac%7Bv%5E2%7D%7BR%7D%20)
The force of friction is given by the normal force (here, just the weight, mg) times the static coefficient of friction:
![F_{fric}= mg \mu_{s}](https://tex.z-dn.net/?f=F_%7Bfric%7D%3D%20mg%20%5Cmu_%7Bs%7D)
Notice we don't use the kinetic coefficient even though the bike is moving. This is because when the tires meet the road they are momentarily stationary with the road surface. Otherwise the bike is skidding.
Now set these equal, since friction is the only thing providing the ability to accelerate (turn) without skidding off the road in a line tangent to the curve:
Decreased it because you can float a lot
The energy of a wave will remain constant if which of the following changes are made to it is given below
Explanation:
1.In electromagnetic waves, energy is transferred through vibrations of electric and magnetic fields. In sound waves, energy is transferred through vibration of air particles or particles of a solid through which the sound travels. In water waves, energy is transferred through the vibration of the water particles.
2.First of all for light which is a electromagnetic wave c=frequency*wavelength. As the wavelength increases the frequency decreases. This can be physically understood as the increase in red shift of the light. Also energy =h*frequency,hence increasing wavelength decreases the energy carried by the photon.
3.Wave frequency is related to wave energy. the more energy in a wave, the higher its frequency. The lower the frequency is, the less energy in the wave.