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Question: How many coulombs (C) of positive charge are there in 1.32 kg of plutonium, given that its atomic mass is 244 and each plutonium atom has 94 protons?
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A 97.0-kg bungee jumper steps off a bridge with a light bungee cord tied to her and to the bridge. The unstretched length of the cord is 12.0 m. The jumper reaches reaches the bottom of her motion 36.0 m below the bridge before bouncing back. We w..
A 57 gram tennis ball is served at 45 meters per second. If the ball started from rest what impulse was applied to the ball by the racket
A projectile (mass = 0.28 kilogram) is fired at and embeds itself in a target (mass = 2.02 kilogram). Find what percentage of the projectile incident kinetic energy does the target (with the projectile in it) carry off after being struck
It takes 25 turns to drive a screw completely into a block of wood. Because the friction force between the wood and the screw is proportional to the contact area between the wood, what is the total work (in J) required to drive in the screw
A spherical shell has an outside radius of 2.6cm and an inside radius of a. The shell wall has uniform thickness and is made of a material with density 4.70g/ cm3. The space inside the shell is filled with a liquid having a density of 1.23g/cm3.
If a person exerts 44 N of force on the back of a seat while stopping in 0.4 seconds, what is the impulse on the seat back?
a car wheel with a diameter of 30 inches has a linear velocity of 30 mph. What is the angular displacement of the car whell during the 10 seconds of acceleration
A Carnot cycle uses a cold reservoir at 280 K. In each cycle, 2500 J of heat is supplied and 1200 J of work is done. What is the temperature of the hot reservoir
The Higgs boson was recently observed in experiment. Consider two strategies for Higgs production in a high-energy particle accelerator through collisions of proton and antiproton: proton + antiproton -> Higgs.
The floor of a railroad flatcar is loaded with loose crates having a coefficient of static friction of 0.20 with the floor. find in how short a distance the train can be stopped at constant acceleration without causing the crates to slide over the f..
problem 1. my son jumps on his stomp rocket and it takes off with an initial speed of 9.8 ms starting from the
a dipole consists of charges e and -e separated by 0.61 nm. it is in an electric field e 2.9 times 104 nc.a what is
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