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A radar station locates a sinking ship at range 17.5 km and bearing 136° clockwise from north. From the same station, a rescue plane is at horizontal range 19.6 km, 163° clockwise from north, with elevation 1.85 km.
(a) Write the displacement vector from plane to ship, letting i represent east, j north, and k up.
(b) How far apart are the plane and ship?
A ball (m= .450 kg) is placed at the top of a ramp 1.00 m high. what is the ball's velocity at the bottom of the ramp
Photons with wavelength 670 nm are capable of producing photoelectrons from a particular substance. Determine the substance's work function and cutoff wavelength
An elevator weighing 2500 N ascends at a constant speed of 8.0 m/s. How much power must the motor supply to do this
A 48.21 {rm kg} ice skater spins about the vertical axis through her body with her arms horizontally outstretched, making 2.20 turns each second. The distance from one hand to the other is 1.5 {rm m}. Biometric measurements indicate that each hand na..
A 5.0 µC point charge is placed in an external uniform electric field of 1.60 104 N/C. At what distance from the charge is the net electric field zero
A stone takes 0.28s to travel past a window 2.2m tall. From what height above top of the window did the stone fall?
Points A and B have electric potentials of 243 V and 129 V, respectively. When an electron released from rest at point A arrives at point C its kinetic energy is KA. When the electron is released from rest at point B, however, its kinetic energy when..
a tennis player receieves a srve with the ball travelling horizontally towards him at 50 m/s: what was the change in momentum of the ball
A wooden raft has a mass of 92kg. When empty it floats in water (density 1000 kg/m3) with 48 percent of its volume submerged. What mass of sand can be put on the raft without it sinking.
The potential energy of a particle moving in the x-y plane is U=a/(x^2+y^2)^1/2, where a is a constant. What is the force on the particle
An object is placed 8cm in front of a converging lens with a focal length of 18cm. What is the lateral magnification
A 4.000 liter container is filled to the brim with ethanol at 20.0 °C. The container is heated to 30.0 °C. What is the volume expansion coefficient of the container material
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