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A fishing line has attached to it a hollow plastic float 2.15 cm in diameter and having a mass of 1.90 g. Find the mass of a lead weight that, when attached to the bottom of the float, will cause the float to be half submerged.
the security alarm on a parked car goes off and produces a frequency of 1220 Hz. The speed of sound is 343 m/s. At what speed are you driving
At which wavelengths (or energies) will you observe lines in infrared absorption (a phonon absorbs a photon) and raman scattering spectra? The temperature is 300 k. raman scattering is excited with a cw Argon laser at 514.5 nm.
The distance between successive crests of a sound wave is 33m. what is the approximate frequency of the sound wave
A very long, thin straight line of charge has a constant charge density of 20pC/cm. How far does the electron go before it comes back
A person pushes a 17.2-kg shopping cart at a constant velocity for a distance of 24.2 m on a flat horizontal surface. Determine the work done by the pushing force
A point charge q = ?2.3 nC is initially at rest adjacent to the negative plate of a capacitor, What is the potential difference between the plates
If you are designing a lander for Venus in the shape of a hemisphere 2.6m in diameter, how many newtons of inward force must it be prepared to withstand due to the Venusian atmosphere
Two cylinders each contain 0.30 mol of a diatomic gas at 300 K and a pressure of 3.0 atm. What is the final temperature of the gas in the cylinder A
water is flowing in a horizontal pipe of variable cross section. Where the cross-sectional area is 1.80x10^-2 m^2, What is the PRESSURE and VELOCITY
A body of mass M is at rest. It suddenly explodes into three pieces. One mass is .25M, moves due east at 12m/s. Find the velocity of the remianing piece
The balance wheel of a watch oscillates with angular amplitude 0.90? rad and period 0.68 s. Find the maximum angular speed of the wheel
What type of weather front will be responsible for the following weather forecast? "Cool today with rain becoming heavy by this afternoon. Slightly warmer tomorrow. "Winds south easterly becoming westerly to north westerly by the tomorrow morning."
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