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Ships A and B leave port together. For the next two hours, ship a travels at 15 mph in a direction 20° west of north while the ship B travels 20° east of north at 20 mph.
1. What is the speed of ship A as seen by ship B?
2. What is the distance among the two ships two hours after they depart?
Betty Bodycheck (mB = 54.7 kg, vB = 22.0 km/h in the positive x-direction) and Sally Slasher (mS = 42.4 kg, vS = 28.0 km/h in the positive y-direction) are both racing to get to a hockey puck. Find both Betty's and Sally's Kinetic Energies
An automatic dryer spins wet clothes at an angular speed of 4.2 rad/s. How long does it take the dryer to come up to speed
A parallel plate capacitor is make of two circular thin plates of radius 15 cm separated by 2.5 mm of a material with dielectric constant32. what is the charge resident on each plate
A straight wire rests on a level surface and is oriented along the east-west axis. A compass is placed above the wire and parallel to the surface. When a current flows in the wire eastward, in what direction will the north end of the compass point?
A potter's wheel having a radius 0.49 meter and a moment of inertia 12.8 kg•m2 is rotating freely at 51 rev/min. Determine what the effective coefficient of kinetic friction between the wheel and the wet rag
a 500kg truck moving at 30 ms strikes a parked 300kg car. they connect together and move forward.a what kind of
q1. a school yard teeter totter with a total length of 6.0 m and a mass of 36 kg is pivoted at its center. a 19 kg
Calculate the orbital period of Neptune (in yr) from knowledge of G, the mass of the sun (M = 1.99*10^30 kg), and the orbital radius of Neptune of 3.00*10^1A.U
Starting from rest, a disk rotates about its central axis with constant angular acceleration. In 5.0 s, it rotates 5 rad. What was the angular acceleration during this time
A 76 W light bulb with a resistance of 178 ? is connected to a power supply with a 117 V. What is the internal resistance of the power supply
A potter's wheel having a radius 0.47 m and a moment of inertia 10.9 kg•m2 is rotating freely at 46 rev/min. The potter can stop the wheel in 7.0 s by pressing a wet rag against the rim and exerting a radically inward force of 68 N. Find out the effe..
The volume flow rate in an artery supplying the brain is 3.0 x 10-6 m3/s. If the radius of the artery is 5.4 mm, determine the average blood speed
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