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Q1. A small 150 g pebble is 3.4km deep in the ocean and is falling with a constant speed of 25 m/s. What force does the water exert on the falling pebble?
Q2. At a distance rl from point charge the magnitude of the electric field created by charge is 248 N/C. After a distance r2 from the charge, field has a magnitude of 132N/C. Find ration r2/r1.
The difference in piezometric pressure, pz,A – pz,B. Express both answers in kPa and pressure differences pA - pB.
What is the speed of crate hit ground
After the ambulance passes, the observed frequency of the siren is 493 Hz. Conclude the ambulance's speeds from these observations.
If the 2 kg mass slides on a horizontal frictionless surface, what is the speed of the mass 4 kg while it has fallen a distance 0.4 m downward from its rest position.
If she were to use the mattress as a trampoline losing contact with it for part of each cycle. What minimum amplitude of oscillation does she need.
The pilot of an aircraft wishes to fly due west in a 37.70 km/h wind blowing toward the south. The speed of the aircraft in the absence of the wind is 191 km/h.
A ship sets out to sail to a point 197 km due north. An unexpected storm blows the ship to a point 107 km due east of its starting point. In what direction must it now sail to reach its original destination.
An osprey's call is a distinct whistle at 2200 Hz. An osprey calls whereas diving at you, to drive you away from her nest. You hear call at 2220 Hz. How fast is the osprey approaching.
What is kinetic energy of the shell
If a person radiates about 66 W of power at room temperature, how long does it take for person to radiate away the energy acquired by consuming a 230 Calorie doughnut.
Compute an inductance of the sensor for air gaps
A 1.0 kg block is attached to a spring with spring constant 18.0 N/m. While the block is sitting at rest, a student hits it with the hammer and almost instantly gives it a speed of 41.0 cm/s. What is the amplitude of the subsequent oscillations? The ..
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