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A woman is standing in the ocean, and she notices that after a wave crest passes by, five more crests pass in a time of 57.1 s. The distance among two successive crests is 36.4 m. What are the wave's
(a) period, (b) speed, (c) wavelength, and (d) frequency?
A piece of lead [c = 128 J/(kg·C°)] is heated from 18.0° C to 31.0° C. The same amount of heat is added to a piece of copper [c = 387 J/(kg·C°)]. Determine the final temperature Tf of the copper
A pole-vaulter is nearly motionless as he clears the bar, set 4.2m;m above the ground. He then falls onto a thick pad. The top of the pad is 80 cm{rm cm} above the ground, and it compresses by 50cm;cm as he comes to rest
What is the work done by the centripetal force on an object with a mass of 2 kg moving with a constant velocity of 3 m/s
Two geekie physics students with a combined mass of 122 kg jump into their old car to run out for some late night pizza. What is mass of the car
A very long, straight solenoid with a cross-sectional area of 6.00cm squared is wound with 40 turns of wire per centimeter, What is the average induced emf in the secondary coil
A jet plane begins a dive with an initial speed of 135 m/s and accelerates along its path at 20 m/s^2, find the acceleration of the plane at the bottom of the circular path
questionair has a small regularly negligible index of refraction. it is 1.0002926. this causes the sun to actually be
In each of two coils the rate of change of the magnetic flux in a single loop is the same. The emf induced in coil 1, which has 243loops, is 3.36 V. The emf induced in coil 2 is 4.75 V. How many loops does coil 2 have?
A metal rod with a diameter of 2.30 cm and length of 1.10 m has one end immersed in ice at 32oF and the other end in water at 212oF. what is the thermal conductivity of this metal
A figure skater begins spinning counterclockwise at an angularspeed of 4.7 π rad/s. during a 4.9 s interval, she slowly pulsher arms inward and finally spins at 8.2 π rad/s. what is heraverage angular acceleration during this time interval?
The turntable of a record player has an angular speed of 9.7
A 40 kg box is sliding down a ramp angled at 15 degrees down from the horizontal. find the force of friction between the box and the ramp
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