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Your adventurous friend Lola goes bungee jumping. She leaps from a bridge that is 100 m above a river. Her bungee cord has an un-stretched length of 50 m and a spring contsant of k= 600 N/m. Lola has a mass of 55 kg.
a) How fast is she falling when she just starts to stretch the cord?
b) How long does it take for Lola to reach this point?
c) What is her height above the river at her lowest point?
d) What type of mechanical energy system does Lola and the cord have before she jump? At the instant Lola comes to rest at her lowest point?
6.00g of nitrogen gas at 22.0 degree celsius and an initial pressure of 4.00atm undergo an isobaric expansion until the volume has tripled, What amount of heat energy is transferred from the gas as its pressure decreases
what is the direction of its velocity relative to the frame of reference.
Given that Neptune is about 30 AU from the sun, how many years does it take to complete an orbit around the Sun? Using this information
A 1.20 liter flask contains a certain quantity of ideal gas at 305 K. next an equal number of molecules of the same gas are added to the flask, after which the absolute pressure is 1.30 times its original value. What is the final temperature.
An ideal gas initially at 20°C and 199 kPa has a volume of 3.40 L. It undergoes a quasi-static, isothermal expansion until its pressure is reduced to 94 kPa. (a) Find the work done by the gas. J (b) Find the heat added to the gas during the expans..
The pilot of an airplane traveling 180 km/h wants to drop supplies to flood victims isolated on a patch of land 150 m below. The supplies should be dropped explain how many seconds before the plane is directly overhead?
Object A, which has been charged to + 29.2 nC, is at the origin. Object B, which has been charged to - 28.9 nC, is at ( x,y ) = ( 0.0;{rm cm},; 1.50 cm ).What is the y-component of force (vec{F}_{rm A ; on ; B})_{rm y} on B due to A.
A train is travelling up a 4.8^circ incline at a speed of 3.25m/s while the last car breaks free and begins to coast without friction.
Find tension in the back muscle and the compressional force
A grinding wheel 0.45 in diam rotates at 2900. What is acceleration of a point on the edge of the grinding wheel.
A 5.01E+4 kg space probe is traveling at a speed of 12600 m/s through deep space. Retrorockets are fired along the line of motion to reduce the probe's speed, What is the final speed of the probe?
A small helium-neon laser emits red visible light with a power of 3.2 mW in a beam with a diameter of 2.5 mm. what is the total energy contained in a 1.00 m length of the beam
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