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Compute all parts of given question:
Question: A 60kg bicyclist rides his 7.8kg bicycle with a speed of 15m/s.
Part I: How much work must be done by the brakes to bring the bike and rider to a stop?
Part II: How far does the bicycle travel if it takes 3.5s to come to rest?
Part III: What is the magnitude of the braking force?
I need help to find how much work must be done by the brakes to bring the bike and rider to a stop.
A circuit contains a 4.50-nF capacitor and a 4.00-mH inductor. By what factor does this angular frequency change if a 1.00-kilo ohms resistor is connected in series with the capacitor and the inductor
Neutrons (RBE = 2.0) and some unknown radiation type have the same biologically equivalent dose. What is the RBE for the unknown radiation
A student sits on a rotating stool holding two 3.0 kg objects. When his arms are extended horizontally, Find the new angular speed of the student
A helium-filled weather balloon has a 0.90 m radius at liftoff where air pressure is 1.0 atm, What is the pressure at the airborne location
Two skaters are traveling toward each other. The left skater has a mass of 75 kg while the right skater has a mass of 90 kg. Find the center-of-mass velocity of the two skaters in the pavement
A bullet with a mass of 4.0 g and a speed of 650 m/s is fired at a block of wood with a mass of 9.7×10?2 kg. What is the speed of the bullet when it exits the block
question a 450-loop circular armature coil with a diameter of 8.0 cm rotates at in a uniform magnetic field of strength
One type of slingshot can be made from a length of rope and aleather pocket for holding the stone. Determine the angular speed of the stone
If alpha particles are caused to fall through a potential difference of 1500 volts, determine their final speed if they were initially at rest. An alpha particle has mass 6.68*10^-27kg and charge of +2e. Alpha particles are Helium nuclei.
You shoot an arrow into the air. Two seconds later arrow has gone straight upward to a height of 30 meters above its launch point. a) What was the arrow's initial speed? b) How long did it take for the arrow to first reach a height of 15 meters ab..
A worker on scaffolding 65 ft above the ground needs to lift a 340 lb bucket of cement from ground to a point 30 feet above the ground by pulling on a rope weighing 5 lb/ft. How much work is required.
A dish of hot food has an emissivity of 0.40 and emits 20 W of thermal radiation. If you wrap it in aluminium foil, which has an emissivity of 0.008, how much power would it radiate.
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