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A pendulum of mass 0.25 kg and length L= 1.0 m is attached to a line which is fixed at point P, and makes an angle of 15 degrees with respect to the vertical. The mass rotates in a horizontal circle at constant speed of 1.5 m/s. Determine the following:
a) The force of tension in the line
b) The radius r of the circle the pendulum traces out.
c) The period and frequency of the motion.
Two 2.7cm -diameter disks face each other, 2.7mm apart. They are charged to ±14nC. What is the electric field strength between the disks
David is driving a steady 24 when he passes Tina, who is sitting in her car at rest. Tina begins to accelerate at a steady 2.70 at the instant while David passes. How far does Tina drive before passing David.
What is linear charge density of the insulating shell
Ships A and B leave port together. For the next two hours, ship A travels at 40.0mph in a direction 55.0, What is the distance between the two ships two hours after they depart
Determine the same situation, but now let the initial speed v0 of the first ball be given and treat the height h of the building as an unknown. What should the height of the building be for both balls to reach the ground at the same time for v0= 8..
A small coin, initially at rest, begins falling. If the clock starts when the coin begins to fall, what is the magnitude of the coin\'s displacement
Capacitors C1 = 6.03 ?F and C2 = 2.45 ?F are charged as a parallel combination across a 298 V battery, Calculate the resulting charge on capacitor C1 and C2
A boy in a moving bus at +6 m/s observes a car moving at -3 m/s. What is the actual velocity of the car
A rocket takes off vertically from the launchpad with no initial velocity but a constant upward acceleration of 2.25 m/s2. What is the maximum height the rocket will reach above the launchpad
A molecule of DNA (deoxyribonucleic acid) is 2.09 µm long. The ends of the molecule become singly ionized: negative on one end, compute the effective spring constant of the molecule
Two loudspeakers on a concert stage are vibrating in phase. A listener is 57m from the left speaker and 30m from the right one. The listener can respond to all frequencies from 20 to 20 000 Hz.
A shopper pushes a cart 39 m south down one aisle and then turns 90.0° west and moves 22 m. He then makes another 90.0° turn and moves 14 m.
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