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A dog running in an open field has components of velocity = 3.2 and = -1.6 at time = 10.4 . For the time interval from = 10.4 to = 19.3 , the average acceleration of the dog has magnitude 0.43 and direction 30.0 measured from the toward the . At time = 19.3 , what are the x-component of the dog's velocity? 2-At time = 19.3 , what are the y-component of the dog's velocity? Express your answer using two significant figures.
a 72 kg block is hanging in the air suspended by a rope, tied up and over a frictionless pully, to a second block of unkown mass. calculate the mass of the block on top of the cliff
Charge A and charge B are 2.5 m apart. Charge A is 1.4C and charge B is 2.5C. Charge C, which is 2.0 C, is situated between them and force on charge C is zero. How far from charge A is Charge C.
A juggler performs in a room whose ceiling is 3.0 m above thelevel of his hands. He throws a ball upward so that it just reachesthe ceiling. What is the time required for the ball to reach the ceiling
Calculate the energy and velocity of the a-particle - prove that the final energy of the a-particle is given by
A pendulum of length 7.87 m is released from rest at an angle of 22.4 º from the vertical. What is the maximum speed of the pendulum
Particle A andparticle B are held together with a compressed springbetween them. When they are released, the spring pushes them apart,and they then fly off in opposite directions, what are the kinetic energies of each particle
A dolphin located in sea water at a temperature of 25°C emits a sound directed toward the bottom of the ocean 160 m below. How much time passes before it hears an echo
A person pulls a toboggan for a distance of 50.0 m along the snow with a rope directed 25.0° above the snow. The tension in the rope is 78.0 N. How much work is done on the toboggan by the tension force
What fraction of incident intensity is transmitted by system
Presume that you loft the ball with the initial speed of v = 17.6m/s, at an angle of θ = 50.7° above the horizontal. At this instant your opponent is d = 11.19m away from the ball. He begins moving away from you 0.35s later, hoping to reach the ba..
a 8.4 kg mass is attached to a light cord that passes over a massless frictionless pulley. the other end of the cord is
A 8.97-cm-long thin glass rod is uniformly charged to +40.5 nC. A small glass bead, charged to +5.3 nC, is 4.92 cm from the center of the rod, What is the force (magnitude) on the bead
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