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Find the wavelength of a train whistle heard by a fixed observer as the train moves toward the observer with a velocity of 40.0 m/s. A wind blows at 7.0 m/s from the observer to the train. The whistle has a natural frequency of 500.0 Hz.
You drive 96km/h east for 29min , then 76km/h north for 46min . Let the +x-axis point east and the +y-axis north. Find your average speed for the entire trip
A child and sled with a combined mass of 57.0 kg slide down a frictionless slope. what is the height of the hill
At a recent rock concert, a dB meter registered 122 dB when placed 2.20 m in front of a loudspeaker on the stage. Determine the power output of the speaker
Block A has a mass of 3.00 kg and rests on a smooth table and is connected to the block B which has a mass of 2.00 kg after passing over an ideal pulley Block B is released from rest. How long does it take Block B to travel 80 cm
A 1250 W radiant heater is constructed to operate at 240 V. What is the resistance of the heating coil
A 12.5 cm tall soft drink can has a mass of 17.0 g and contains 364 g of soda when full. Where is its center of mass when half full
Kikyo shot an arrow in the vertical direction at the initial velocity was v0 = 68.6 m/s. How high can the arrow reach vertically
On a very muddy football field, a 120 kg linebacker tackles an 80 kg halfback. Immediately before the collision, the linebacker is slipping with a velocity of 8.8 m/s north, What is the direction of this velocity
A small 12 gram bug stands at one end of a thin uniform bar that is initially at rest on a smooth horizontal table. Find the angular speed of bar after frisky insect leaps
An immersion heater has a resistance of 5.0 ohms while drawing a current of 3.0 amperes. How much electrical energy is delivered to the heater duing 200 seconds of operaion
for an unpolarized electric field i.e. the electric field has polarization components both parallel and perpendicular
During a particular thunderstorm, the electric potential difference between a cloud and the ground is Vcloud - Vground = 4.10 108 V, What is the change in an electron's electric potential energy
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