yes
yes, but only when the brakes are applied.
vacuum leak 65 power brakes run off a vacuum, when you apply your brakes you stop the air leak. 65;
because you did not step on your clutch pedal
Vibration when applying brakes is most likely warped rotors. Another cause could be loose caliper bolts.
worn front end parts (steering or suspension) could cause a car to shake when appling the brakes.
More than likely you have a warped rotor. Have your brake pads replaced and the rotors turned or replaced. Also, some cars will automatically pump the brakes in an emergency, or panic braking. This can be felt as if you rapidly pumped the brakes several times in quick succession.
because the alignment is off Warped or out of round brake rotors/drums.
A caliper is a measuring tool that measures either the inside or outside diameter of something. Disc brakes on a car use a caliper to push the brake pads against the rotor to stop the car.
You increase the frictional force by applying the brakes.
simple hydrolics. You have a canistor (master cylinder) which holds the fluid. When you push on the pedal, The cylinder opens and pushes fluid to the brakes which push against a disc to slow the momentum
Normally this is caused by a warped rotor. Have your brakes inspected and rotors turned or replaced.