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a) A stone is thrown vertically upward at a speed of 28.40 m/s at time t=0. A second stone is thrown upward with the same speed 2.570 seconds later. At what time are the two stones the same height?
b) At what height do the two stones pass each other?
c) What is the upward speed of the second stone as they pass each other?
Two speakers, one directly behind the other, are each generating a 275 Hz sound wave. What is the smallest separation distance between the speakers that would produce destructive interference at a listener standing in front of them? Assume that th..
A solid spherical mass M2 = 30 kg and radius 20 cm is concentric with a spherical shell M1 = 60 kg, determine the gravitational force on mass m
Thermal expansion increases the length of a clock's pendulum by a fractional increase of 4.9×10-5. Under these conditions, how much error in timekeeping accumulates over 1 day
An electron is then fired directly toward the center of the shell, from point P at distance r from the center of the shell (r >> R). What initial speed v0 is needed for the electron to just reach the shell before reversing direction.
q1. an electric field of 254000 nc points due west at the certain spot. what are the magnitude and direction of the
A 70-kg astronaut floating in space in a 110-kgMMU (manned maneuvering unit) experiences an acceleration of 0.029 m/s2 when he fires one of the MMU's thrusters. What is the thrust of the thruster
Two sinusoidal waves, identical except for phase, travel in the same direction along a string, what is the resultant amplitude of the two waves
A 2m long pendulum with a mass of 250gr collides with a 95gr sticky ball seating in the pendulum's path and at the edge of a horizontal surface. The collision takes place while the pendulum is passing by its lowest point.
A block of mass M is held motionless on a frictionless inclined plane by means of a string attached to a vertical wall as shown in the diagram.what is the magnitude of the tension t in string.
A current of 15.0 mA is maintained in a single circular loop with a circumference of 3.30 m. find the magnitude of the torque exerted by the magnetic field on the loop
a 39 ohm resistor is connectes to a battery, a voltmeter reads 9.8 V. when the resistor is repaced with a 9.1 ohm resister. the voltmeter reading drops to 8.0 V.
Use Gauss's Law and Ampere's Law to find both the capacitance per unit length and the inductance per unit length of a coaxial cable with an outer radius of 4.5mm and an inner radius of 1.5mm
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