A bicycle can be used to generate electric power by attaching a loop to the axle and letting it rotate in a magnetic field. Suppose such a device is attached to a bicycle with a 65 cm diameter wheel.
(a) What is the velocity (in m/s) of the bicycle if the generator's angular velocity is 63 rad/s?
(b) What is the maximum emf of the generator when the bicycle moves at 3.5 m/s, noting that it was 17 V under the original conditions?

report!

explanation:

physics means: "the branch of science concerned with the nature and properties of matter and energy. the subject matter of physics, distinguished from that of chemistry and biology, includes mechanics, heat, light and other radiation, sound, electricity, magnetism, and the structure of atoms."

weight of the box is given as

here this is placed on the inclined of angle 42 degree

now this weight will have two components one is along the incline other is perpendicular to it

so here we need to apply a force parallel to incline opposite to its component of weight

so here the component of weight is given as

here we have

so it requires 75 n force to move it upwards

answer: the metamorphic rocks are formed when they are exposed to high pressure and high temperatures. this happens when one of the earth's plates comes in contact with the other plate by traveling in opposite directions, straight into each other or slipping under one another. the friction that is caused by this activity results in   melting of rocks and when it cools they are known as metamorphic rocks. this process needs a controlled amount of pressure and temperature otherwise it may turn into magma.