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Explosives are used to blow a rock apart. The explosion blows the rock into three fragments. Two fragments go off at a 104 degree angle to each other--a 5.3 kg piece at 34.1 m/s and a 6.2 kg piece at 29.4 m/s. Calculate the speed of the third piece, if it has a mass of 5.7 kg.
A rescue plane wants to drop supplies to isolated mountain climbers on a rocky ridge 235 m below. With what speed do the supplies land in the latter case
An object has a total energy of 4.20 1015 J and a kinetic energy of 2.40 1015 J. What is the magnitude of the object's relativistic momentum
A light ray is incident from air onto the surface of a very quiet lake. what is the index of refraction of the water
A newly discovered planet has twice mass of the earth, but the acceleration because of gravity on the new planet's surface is exactly the same as the acceleration due to gravity on the earth's surface. What is the radius Rp of the new planet in te..
a charge experiences a 0.50- nforce in the positive direction a . if this charge is replaced with a charge find the
A long straight wire is aligned north-south and carries current in the northerly direction. What is the direction of the magnetic field created directly above the wire
Use the absolute derivative DA?/Du=dA?/du??(from ?? to ?)A? dx^?/du to prove that the inner (scalar) product of two vectors is preserved under parallel transport on a path if the connection defined on the manifold is a metric connection.
two particles are fixed to an x axis particle 1 of charge q1 2.43 x 10-8 c at x 22.4 cm and particle 2 of charge q2
On an air track, a 400g glider moving to the right at2.00 m/s collides elastically with a 500g glider moving in theopposite direction at 3.00 m/s. Find the velocity of first glider after the collision
An 8 g bullet leaves a gun at 700 m/s.? what is the maximum height that this bullet could reach
A spring-loaded pellet gun is designed to fire 2.50 g projectiles horizontally at a speed of 50.7 m/s. What maximum force is required to load the gun
A 60.0kg skier starts out at the top of a hill from rest and does 2000J of work with his poles while skiing down 2000m to the base 90.0km lower than the top. calculate the average friction force acting on him
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