Position the end of a spanner wrench on the hex nut on the bottom of the bleeder valve and slowly rotate it counterclockwise to loosen it. After a few seconds, you will notice some brake fluid leaking out of the valve into the hose.The bleeder valve helps remove air from the caliper so your brakes work properly. Start your vehicle, and drive it slowly down a quiet neighborhood street to test the brakes. Press on the brake pedal to make sure the caliper works properly and doesn’t make any noise while you’re driving.Don’t drive too fast while you’re testing your brakes just in case something were to go wrong.
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One-sentence summary -- Open the bleeder valve on the caliper until it starts leaking brake fluid. Take your vehicle for a test drive to make sure the brakes work properly.

Q: Kicking your attacker’s knees is a reliable way to cause them substantial pain and to keep them from being able to run after you very quickly. Since the knees are only a couple of feet off the ground, the attacker also won’t be able to grab your foot when you’re kicking. Kick the front of their knee if you want to cause serious injury and either side of the knee to instantly destabilize the attacker. or scratch your attacker in their eyes. Form your dominant hand into a fist and punch your attacker in the eyes. You can also try scratching at the person’s eyes if you have long fingernails. The eyes are one of the most vulnerable spots of the body, and a quick strike to the eyes can quickly change a would-be attacker’s mind. They’ll also be temporarily unable to see, giving you a chance to escape.  Keep in mind that you’re not trying to blind your aggressor, just inflict some damage so you can escape the scene. If you have pepper spray with you, spray it into your attacker’s eyes to temporarily blind them and cause a great deal of pain. Or, try stabbing them in the eyes with your keys. The nose is also a vulnerable, sensitive area. To harm your attacker, give them a punch in the nose. You can also hit them in the nose with the base of your open palm. Alternately, if your attacker is within 2 feet (0.61 m) of you, try hitting them in the nose with an elbow. Hitting your attacker in the nose will leave them in immense pain and should give you time to quickly leave the area. If the person attacking you leaves their throat uncovered, jab a punch at their neck. Aim for the Adam’s apple or for the soft patch between their collarbones at the base of their neck. A firm hit to either of these spots will temporarily cut off the attacker’s airflow and give you a chance to make an escape. Be aware that a hard punch to the Adam’s apple could collapse someone’s airway and kill them. Unless you are literally fighting for your life, don’t hit the attacker as hard as you can in the Adam’s apple. A solid kick to a man’s groin is a reliable way to incapacitate him for several minutes; he may even drop to the ground in agony. When you’re lining up your kick, aim for the center of the groin directly in between your attacker’s legs.  Keep in mind that your attacker will likely be expecting a kick in the groin and may quickly move away or block your kick. If you’re being attacked by a woman, kicking her in the groin isn’t necessarily a bad idea, but it won’t be as effective as it will against a man. As soon as you have a chance to disengage from the fight, escape as fast as you can and seek help. Immediately call 911 dispatch and explain what is going on. If you happen to see a police officer, stop them and ask for their help. Whether you’re speaking to a 911 dispatcher or a cop, give a statement of what happened. Never try to “finish” a fight. If you see that your opponent is in pain (e.g., because of a blow to the throat, eyes, or groin), don’t wait around to see if they are ok. Run away and get to safety: your car, inside a building, or in a crowd of people where the assailant won’t be able to find you.
A: Hit their knees with your feet or elbow to reduce their mobility. Jab Hit the attacker in the nose with a fist or open hand. Punch the aggressor in their Adam’s apple or at the base of their throat. Kick your assailant in the groin if you’re being attacked by a man. Make your escape while your assailant is incapacitated.

Article: For this experiment, you’ll need a Bunsen burner, a six-inch metal rod, 10 g of wax, and 4 metal tacks. If you cannot secure the metal rod to the Bunsen burner, you will also need heat resistant gloves. You can buy wax and metal tacks at a craft store. Mold the wax around the flat end of the tacks so that they will stick to the metal rod.  Put one tack every inch along the length of the metal rod. Make sure that they are all on the same side of the rod. You should have six tacks connected to the metal rod in all. Light a match or a lighter and then turn the gas tap on the Bunsen burner slightly to the left to allow gas to release from the spigot. You will hear a slight hissing when the gas is on. Place the flame over the gas spigot and the Bunsen burner will light. Be careful. Once you’ve lit the Bunsen burner you can secure the metal rod over it.  The whole rod doesn’t need to be over the burner, just the outermost inch or so. If you have heat resistant gloves and no other way to secure the metal rod over the burner, you can hold the rod there. Keep a steady hand. As the metal rod conducts heat the tacks closest to the burner will start to fall off.  The wax will melt and the tacks will drop off onto the table. Once the final tack falls off you can turn off the Bunsen burner. Be careful not to touch the rod with your bare hands. This experiment illustrates how metal conducts heat. You can visualize how one end of the metal rod got hot rather than the entire rod heating up at an equal pace. This is based on where the Bunsen burner was placed. If you placed the burner in the middle of the rod, the heat would start in the middle and extend outwards in either direction.
Question: What is a summary of what this article is about?
Gather your materials. Use the wax to secure the tacks. Turn your Bunsen burner on and secure the rod. Watch as the tacks fall off.