Which president was the first to appear on television?

Which president served as a senator from Delaware for 36 years? Which president was the first to be born in a hospital? Which president installed the first telephone in the White House? Which president was the first to ride in an automobile while in office? Which president gave radio addresses known as "fireside chats"? Which president delivered the shortest inaugural address, just 135 words? Which president delivered the longest inaugural address, in cold rain, and died a month later? Which president's inaugural address included "Ask not what your country can do for you"?