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a rifle with a mass of 2.5 kg fires a bullet with a mass of 0.0045kg. the bullet moves with a muzzle velocity of 350m/s after the rifle is fired.
What is the momentum of the bullet after the rifle is fired?
A line of charge starts at x = +x0 and extends to positive infinity. The linear charge density is ? = ?0x0/x, Determine the electric field at the origin
The total mass of helium in a balloon is 131 kg. What is the volume of the balloon
The acceleration of a particle is given by ax(t)=? 1.90m/s2 +( 2.90m/s3 )t, Find the initial velocity v0x such that the particle will have the same x-coordinate at time t= 4.04s
A somewhat longer cable replaces the old and is attached to the steel bar 5 m from its upper end, connecting to the same place on the wall as before and maintaining the same angle between the bar and the wall.
An aluminum ball does not fit through a brass ring at 20oC. The diameter of the ball is 2.001 cm, At what temperature does the ball just fit through the ring
A hydrogen atom has a radius of about 0.05 nm. estimate the electron's kinetic energy in three dimensions.
A 0.24-kg ball on a stick is whirled on a vertical circle at a constant speed. calculate the tension in the stick
Calculate the rate of heat conduction through house walls that are 13.0cm thick and that have an average thermal conductivity twice that of glass wool. Assume there are no windows or doors.
A student is standing on a ladder as shown in the figure to the right. Each leg of the ladder is 2.7 m long and is hidged at point C. What is the tension in the tierod
How many 95W light bulbs can you use in a 120V circuit without tripping a 17A circuit breaker? (The bulbs are connected in parallel, which means that the potential difference across each light bulb is V.)
The surface area of the eardrum is about 8 x 10^-5 m^2. What is the power transmitted to the eardrum by a soundwave of 40 dB if no sound is reflected
If a circular wire loop of radius 10 were held in this magnetic field, what current would be induced in the loop
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