Ahorizontal rectangular surface has dimensions 3.20 cm by 3.90 cm and is in a uniform magnetic field that is directed at an angle of 32.0 ∘ above the horizontal. part awhat must the magnitude of the magnetic field be to produce a flux of 3.80 ×10−4 wb through the surface? express your answer with the appropriate units.

Explanation:

given,

dimension of rectangular surface = 3.20 cm x 3.90 cm

angle of magnetic field above horizontal = 32°

θ = 90° - 32° = 58°

flux = Ф = 3.80 ×10⁻⁴ Wb

Magnetic filed = ?

The magnetic field produced is equal to  

note: the given question is incomplete.

complete question is given below.

which is an example of kinetic energy?

a. the energy stored in ethanol  

b. a hockey puck sliding across the ice  

c. a compressed spring  

d. a ball sitting at the top of a ramp

solution: the kinetic energy is the energy posses by the virtue of the motion of the object.

in the given options, a, c and d are the example of potential energy because it is the energy posses by the virtue of the rest of the object. but option b has the kinetic energy as the object is in motion.

hence, a hockey puck sliding across the ice   is the apex example of kinetic energy.

so, the option (b) a hockey puck sliding across the ice   is the correct option.