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An object is dropped from rest from a height of 4.1 multiply.gif 107 m above the surface of the Earth. If there is no air resistance, what is its speed when it strikes the Earth?
In the absence of air resistance, a projectile is launched from and returns to ground level. It follows a trajectory similar and has a range of 26 m. Suppose the launch speed is doubled, and the projectile is fired at the same angle above the grou..
A 1.2µF capacitor is charged to a potential difference of 11.0V. The wires connecting the capacitor to the battery are next disconnected from the battery and connected across a second, initially uncharged, capacitor. The potential difference across t..
An ideal gas in a container is at a temperature of 92.2°C. What is the average translational kinetic energy of a gas molecule
An electron moves in a circular path perpendicular to a magnetic field of magnitude 0.230 T, find the speed of the electron and the radius of the circular path
In 1911, Ernest Rutherford discovered the nucleus of the atom by observing the scattering of helium nuclei from gold nuclei. If a helium nucleus with a mass of 6.68 10-27 kg.
Announcers at a certain radio station say that they are at "95 FM on your dial," meaning that they transmit at a frequency of 95 MHz (95 megahertz, or 95 million cycles per second). What is the wavelength of the radio waves from this station?
The larger the mass of a star, the shorter its Main Sequence lifetime becomes. Estimat the Main Sequence lifetime of a star with a mass of 6 Msolar
Two loudspeakers, 5.0 m apart and facing each other, play identical sounds of the same frequency, What is the frequency of the sound (in Hz)
A thin rod with length L has a linear density that varies as D = dm/dx = Ax, Calculate the moment of inertia of the rod for an axis at the left end, perpendicular to the rod. Compare your result to that of a uniform rod
A proposed ocean thermal-energy conversion (OTEC) system is a heat engine that would operate between warm water (17°C) at the ocean's surface, What is the maximum possible efficiency of the system
A submarine dives 90.0 m at an angle of 8.0° below the horizontal. What are the horizontal and vertical components of submarine's displacement? (Imagine that upward and the direction of the submarine's horizontal motion is positive.)
When they oppose one another, the box accelerates at 0.240 m/s2 in the direction of F2. (a) What is the magnitude of F1? (b) What is the magnitude of F2?
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