Jupiter subtends an angle of 1.67 10-4 rad when viewed by the unaided eye and 3.20 10-2 rad when viewed through an astronomical telescope that has a 0.043-m focal length eyepiece. Determine the focal length of the telescope's objective lens.

Awheel rotates without friction about a stationary horizontal axis at the center of the wheel. a constant tangential force equal to 82.0 n is applied to the rim of the wheel. the wheel has radius 0.150 m . starting from rest, the wheel has an angular speed of 12.8 rev/s after 3.88 s. what is the moment of inertia of the wheel?

What is the length x of the side of the triangle below? (hint: use the cosine function)

Which terms describe the purpose of antennas on devices that use radio waves? transmit and receivemodify and amplifyamplify and receivemodify and transmit