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Q1. A 2.5g copper penny is given a charge of -0.50 mC.
How many excess electrons make up this charge?
What is the percentage of the mass of these excess electrons to the mass of the penny?
Q2. A proton is travelling to the right at. It has a head-on perfectly elastic collision with a carbon atom. The mass of the carbon atom is 12 times the mass of the proton. What are the speeds of each after the collision? What is the direction of the proton after the collision? What is the direction of the carbon atom after the collision?
A 100 kg car travelling at 20 m/s collides with a 100 kg car traveling at 8 m/s in opposite direction, a) if the two cars stick together, what is their final velocity
You're driving down the highway late one night at 17 {rm m}/{rm s} when a deer steps onto the road 45 {rm m} in front of you. Your reaction time before stepping on the brakes is 0.50 {rm s} and the maximum deceleration of your car is 12 {rm m/s^2}..
An iron bar 40 cm long is braised to a copper bar 50 cm long and of the same diameter. What is the heat flow down the rod if its cross-sectional area is 2.50 cm2
A resistor of 370 is connected in series with a capacitor of 52.0 µF capacitance. The phase shift between the current and voltage at f = 10.3 Hz is
Consider an airplane of wing area 6.8 m^2 (both wings combined) flying through air of density 1.13 kg/m^3. What is the net upward lift force on the plane
A 2150 kg truck is traveling east through an intersection at 1.5 m/s when it is hit simultaneously from the side and the rear. What are their speed and direction just after the collision
In proton-antiproton annihilation, a proton and an antiproton (a negatively charged particle with the mass of a proton) collide and disappear, producing electromagnetic radiation, Find the total energy of the radiation
As a function of time, the velocity of the football can be written as . (If the acceleration of an object is constant, find the average acceleration vector of the football
A merry-go-round starts from rest and reaches the angular speed of 4 rpm in the first two minutes. What would be the angular acceleration of the merry-go-round
A space craft is designed to be rotating column, in order to simulate artifical gravity. find angular frequency must be maintained to simulate surface gravity
An inductor has an inductance of 0.074 H. The voltage across this inductor is 30 V and has a frequency of 850 Hz
question1consider a radius1.0cm circular nondiverging pencil beam of 3x108 photons one-third with an energy of 1 mev
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