yes there is hand operated rear brakes
No. Some more intended as child's bikes are fitted with coaster brakes.
Yes, you can have a foot brake AKA coaster brake on a BMX. But it's not that common, apart from on bikes most intended for kids doing casual riding. For dedicated riding, people prefer hand-operated brakes, as they make it faster to get back on power after braking.
Hand operated
Airplanes do not have gas pedals. Instead they use a throttle lever which is hand operated. Some planes come with pedals that are used to operate the rudder or brakes.
No.
hand operated vacuum pump . hook up and and apply vacuum and open bleeder and keep applying vacuum then close bleeder. repeat x4
The handbrake is only used for parking.
A Bicycle Pump is used to pump the tyres on Bikes it is normally a simple hand operated device which pushes air through a tube atached to a nozel which is screwed to the Valve on a Bicycle inatube the air is then forced into the Bicycle Tire.
with your hands
Hand brakes are attached to the rear brakes in most vehicles. Start with making sure the rear brakes are in good working order and adjusted. Most vehicles will have a cable adjustment connected with the front cable that leads to the hand brake. Make this cable adjustment after the rear brakes have been inspected and adjusted.
the piston is operated by the crankshaft