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Question: A fire hose ejects a stream of water at an angle of 36.5 degrees above the horizontal. The water leaves the nozzle with a speed of 27.0 m/s. Assuming that the water behaves like a projectile, how far from a building should the fire hose be located to hit the highest possible fire?
Two long parallel wires 40 cm apart are carrying currents of 10 A and 20 A in the opposite direction. What is the magnitude of the magnetic field halfway between the wires
Two point charges, +3.09 µC and -6.05 µC, are separated by 1.33 m. What is the electric potential midway between them?
If N= 200, r = 5 cm, I = 2.5 A, B = 0.25 T Plane of coil makes an angle of 60 degree, with field line. Calculate torque that must be applied to prevent
let ?1 and ?2 be the ground state and first excited state wave functions for a particle in a deep potential well of width L. calculate the uncertainty in momentum
A 2.10-cm-high object is situated 16.9 cm in front of a concave mirror that has a radius of curvature of 9.91 cm. compute the location and the height of the image
A setup similar to the one shown in the figure below is often used in hospitals to support and apply a horizontal traction force to an injured leg. (Let m = 6.05 kg and ? = 81.0°.) What is the traction force exerted to the right on the leg?
A transformer has 100 turns in its primary windings and 500 turns in its secondary winding. calculate the secondary voltage and current
Solid argon has a density of 1650 kg/m3. The atomic weight of argon is 40. Assuming each atom occupies a cubical volume, what is the distance between the argon atoms
A 1.80-kg rock is released from rest at a height of 18.0 m. Ignore air resistance and determine(a)the kinetic energy at 18.0 m,(b)the gravitational potential energy at 18.0 m,(c)the total mechanical energy at 18.0 m,(d)the kinetic energy at 0 m,(e)th..
Your eye (diameter 2.5 cm) is able to focus the image of a tree on your retina. What is the size of the image of the tree on your retina
An extension cord made of two wires of diameter 0.129 cm (no. 16 copper wire) and of length 2.4 m (8 ft) is connected to an electric heater which draws 13.5 A on a 120-V line
The leg and the cast in Fig 4.20 below weigh 220 N (w1). Determine the weight w2 and the angle α needed so that no force is exerted on the hip joint by the leg plus the cast.
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