Aforce f-( 6 x 10-3 n ) i̇-(4x 10-3 n) j-(8x 10.3 n) k is acting on a charge q -2x 10-9 c moving inside a uniform magnetic field with a velocity (2-106 m/s) i̇ + (3x 106 m/s) j. calculate the components of the magnetic field knowing that the x-component of the field is equal to zero.

massxgravity x heght=weightxheight= pe

4900=490xh

h=10

i believe the answer is a hope it and is correct

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.