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Two cannons are pointed directly towards each other, (one on the ground pointing upwards, A, second on a hill pointing downwards, B. both pointing at each other). When fired, the cannonballs will follow the trajectories, crossing each other’s path, in an arched manner. If we want cannonballs to hit each other, must the gun crews fire cannon A first, cannon B first, or must they fire simultaneously? Ignore any effects due to air resistance.
Two wires run parallel to each other with currents I1 = 9.3 A, and I2 = -17.1 A. find the magnitude of the force per meter of length
A commuter train blows its horn as it passes a passenger platform at a constant speed of 35.0 m/s. t is the frequency observed by a person on the platform as the train approaches
you must determine the acceleration of a rocket so that its equipment can be designed to survive. the rocket will have a burne time of t=30 second, what is maximum altitude of the rocket
q.1. a particle leaves the origin with an initial velocity 6.67 ms and a constant acceleration - 2.48 - 4.29 ms2.
assume that all gases are perfect and that data refer to 298.15 k unless otherwise stated. calculate delta h and delta
q1. throughout a hard sneeze your eyes may shut for 0.41 s. if you are driving a car at 98 kmh during such a sneeze how
a fluid at 690 kpa has aspecific volume of 0.25m3/kg and entersna process with a velocity of 150m/s. calculate the change in internal energy of the fluid
A horizontal spring with spring constant k is on a frictionless surface with one end of the spring fastened to a wall. The spring is compressed a distance ?x from its equilibrium length and a block of mass m is placed against it. If the spring is now..
a hot air balloon decends toward the ground with a velocity of 1.6 ms. a champagne bottle is opened to celebrate
In a model ac generator, a 498 turn rectangular coil, 10.0 cm by 29 cm, rotates at 122 rev/min in a uniform magnetic field of 0.62 T. What is the maximum emf induced in the coil
A predatory fish can accelerate from rest to 5 m/s in 0.28 s. What is the acceleration of the fish
Two small plastic spheres, one charged to 17nC and the other to -17nC are connected by a 25 mm long insulating rod, What is the maximum possible torque on the dipole
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