Answer:
The value is 
The direction is into the surface
Explanation:
From the question we are told that
The mass density is 
The coefficient of kinetic friction is 
The current the wire carries is 
Generally the magnetic force acting on the wire is mathematically represented as
Here 
is the frictional force which is mathematically represented as
While 
is the magnetic force which is mathematically represented as
Here 
is the angle between the direction of the force and that of the current
So
So
=> ![B = \mu_k * \frac{m}{L} * [\frac{g}{I} ]](https://tex.z-dn.net/?f=B%20%20%3D%20%20%5Cmu_k%20%2A%20%20%5Cfrac%7Bm%7D%7BL%7D%20%2A%20%5B%5Cfrac%7Bg%7D%7BI%7D%20%5D)
=> ![B = 0.25 * 0.117 * [\frac{9.8}{1.24} ]](https://tex.z-dn.net/?f=B%20%20%3D%20%200.25%20%2A%20%200.117%20%20%2A%20%5B%5Cfrac%7B9.8%7D%7B1.24%7D%20%5D)
=>
Apply the right hand curling rule , the thumb pointing towards that direction of the current we see that the direction of the magnetic field is into the surface as shown on the first uploaded image
Answer:
14 m
Explanation:
Applying,
P.E = WH............ Equation 1
Where P.E = potential energy at the highest vertical height, W = weight of the toy rocket, H = Vertical height.
Note: At the highest vertical height, the kinetic energy is 0 J
Therefore,
Mechanical energy(M.E) = Potential Energy(P.E)
make H the subject of the equation
H = P.E/W......... Equation 2
From the question,
Given: W = 10 N, P.E = 140 J
Substitute these values in equation 2
H = 140/10
H = 14 m
Answer:
The answer is A)
Explanation:
An ionic compound is formed when one atom donates one or more electrons to one or more atoms of another element. Calcium has two valence electrons, which are donated to an atom of oxygen. So, an ionic compound is formed in the reaction involving one calcium atom with an oxygen atom.
During cellular respiration, our bodies take glucose molecules and breaks the bonds holding the molecules together. When these bonds are broken, the chemical energy stored in these bonds are released and used to make ATP molecules, a form of useable energy for us.
