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The figure below shows a plastic ring of radius R =50.4 cm. Two small charged beads are on the ring: Bead 1 of charge+2.33 μC is fixed in place at the left side; bead 2 of charge+6.02 μC can be moved along the ring. The two beads produce anet electric field of magnitude E atthe center of the ring. At what (a) positiveand (b) negativevalue of angle θ shouldbead 2 be positioned such that E =2.25 × 105 N/C?
A plane drops a package of food to stranded caribou on an ice flow in the Artic circle. How far short of the target should it drop the package
The x-position of a particle is given by the expression x(t)=(4.0 m)cos(4.0?t+ 5.0?) , where x is in meters and t is in seconds. What is the maximum velocity of the particle
q1. a guitar string is 82 cm long and has a mass of 3.6 g. from the bridge to the support post l is 60 cm and the
A force of k is applied to an object for a small fraction of a second, t_k, less than the duration of one frame, t_f. Our simulation doesn't support applying forces for less than an entire frame, so if we wanted to simulate the effect of force k over..
A bat moving at 7.2 m/s is chasing a flying insect. The bat emits a 43 kHz chirp and receives back an echo at 43.68 kHz. At what speed is the bat gaining on its prey
rail car that weighs 43 N is accelerated at 8.9 m/s/s for 4.5 seconds. How much work is done on the rail car
a 200-O resistor, a 40.0-mH inductor and a 2.00 uF capacitor are connected in series with a 120-V rms source at 1000 Hz. What is the phase angle of this circuit
A small glass bead has been charged to 60.0 . A metal ball bearing 2.70 above the bead feels a 1.50×10?2 downward electric force. What is the charge on the ball bearing
What is the average power dissipation in a series of RC circuit if R=5.00 k-ohm, C=3.00 ?F and V= (170V)cos300t
A person wants to push an 80-kg box across the floor. The coefficient of friction between the box and the floor is 0.5. What is the normal force experienced by the box as it sits on the floor
Question on a planet similar to Earth
how many joules of potential energy does 1.5-kg book gain when it is elevated 2 m? when it is elevated 4 mlet g 10
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