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A student reading his physics book on a lake dock notices that the distance between two incoming waves is about 0.85m, and then measures the time of arrival between the crests to be 1.7s.
What is the approximate speed of the waves?
Each of the four wheels has a diameter of 70 mm, and a mass of m = 0.50 kg. The board has a mass M = 5.0 kg. While it isn't completely accurate (since there are bearings at the hub of the wheel), you choose to approximate each wheel as a solid cyl..
A motorcycle traveling with a constant acceleration of 2.0 m/s sq crosses a 100 m long bridge in 4.23 sec. What was the velocity at the end of the bridge
A certain solar collector can absorb 3000 Btu in 8.7 hr. Another panel is added, and together they collect 81000 Btu in 3.2 hr. How long (hr) would it take the new panel alone to collect 81000 Btu?
A 50 ice skater spins about a vertical axis through her body with her arms horizontally outstretched, making 2.50 turns each second. The distance from one hand to the other is 1.5 . Biometric measurements indicate that each hand typically creates ..
A spring of unknown force constant is attached to a rod so that it hangs vertically. With no mass attached, the spring has a length of 12.0 cm. Determine the force constant for this spring
What is an absorption spectra? Explain why a green leaf looks green. Is it the same reason a red leaf looks red? Explain your answer.
a hydrogen atom exists in an excited state for typically around 10 nanoseconds. how many revolutions would bohrs theory
Here's the question: If you have two metal plates 0.50cm apart, and you drop a bit of liquid (mass of 2.6 x 10^-12 g), How many electrons appear on the drop
A solenoid 3 centimeter long consists of 3762 loops of wire. If the magnetic field inside the solenoid is 3 T. Find the magnitude of the current that flows through it
A copper wire is 7.00 m long and has a cross-sectional area of 1.00 10-4 m2. what is the maximum torque that can act on it
You are in a hot-air balloon that, relative to the ground, has a velocity of 4.65 m/s in a direction due east. find direction of the hawk's velocity relative to the ground
A flywheel turns through 26 rev as it slows from an angular speed of 6.3 rad/s to a stop.
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