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Runner A is initially 5.7 km west of a flagpole and is running with a constant velocity of 8.3 km/h due east. Runner B is initially 4.9 km east of the flagpole and is running with a constant velocity of 7.5 km/h due west. How far are the runners from the flagpole when their paths cross?
Two students with vibrating 440Hz tuning forks walk away from each other with equal speeds. How fast must they walk so that they each hear the frequency of 433 from the other fork.
An Argon ion laser has a gain bandwidth of 2 GHz. Find the number of standing wave cavity modes within the gain bandwidth of the argon ion laser
If the spring is not a perfect spring but instead the magnitude of the force exerted by the spring is k times the cube of the amount stretched or compressed
In order to drink from your glass you first need to lift it to your mouth. As you begin to lift your 0.20 kg glass of water, it is accelerating upwards at 0.090 m, What is the net force acting on the glass
A friend of yours is loudly singing a single note at 410 Hz when racing toward you at 26.1 m/s on a day when the speed of sound is 339 m/s. What frequency does your friend hear if you suddenly start singing at 410 Hz.
What should the charge (sign and magnitude) of a particle of mass 1.487 be for it to remain stationary while placed in a downward-directed electric field of magnitude 630.
A small, 100g cart is moving at 1.30m/s on an air track when it collides with a larger, 2.00kg cart at rest. What is the speed of the large cart after the collision
question1a 95 m long train begins uniform acceleration from rest. the front of the train has a speed of 25ms when it
Two point charges are on the y-axis. A 5.0 µC charge is located at y = 1.40 cm, and a -2.30 µC charge is located at y = -1.60 cm. Find the total electric potential at the origin
A 1.90-kg object attached to a spring moves without friction (b = 0) and is driven by an external force given by the expression F = 3.20sin(2?t), Find the resonance angular frequency of the system
Robert has just bought a new model rocket, and is trying to measure its flight characteristics. how much work is done by the drag force on the rocket during its ascent
A car travels at a constant speed around a circular track whose radius is 2.02 km. What is the magnitude of the centripetal acceleration of the car
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