Ping-pong ball with an average density
A piece of balsa wood with density 0.50g/cm^3 is released under water. What is the initial acceleration?? Repeat for a piece of maple with density 0.750 g/cm^3? Repeat for a ping-pong ball with an average density of 0.125 g/cm^3.
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Before throwing a 1.49 kg discus, an ath- lete rotates it along a circular path of radius 1.18 m. The maximum speed of the discuss is 25.2 m/s. Determine the magnitude of its maximum radial acceleration.
A spaceship and an asteroid are moving in the same direction away from Earth with speeds of 0.83c and 0.39c, respectively. What is the relative speed between the spaceship and the asteroid?
61.0-Ω resistor is connected in parallel with a 122.0-Ω resistor. This parallel group is connected in series with a 18.0-Ω resistor. The total combination is connected across a 15.0-V battery. Find the current in the 122.0-&Omega
A parallel-plate capacitor is formed from two 1.0 {rm cm} times 1.0 {rm cm} electrodes spaced 3.0 {rm mm} apart. The electric field strength inside the capacitor is 1.0times10^{6};{rm{N/C}}. What is the charge (in {rm nC}) on positive electrode?
A piece of balsa wood with density 0.50g/cm^3 is released under water.What is the initial acceleration?? Repeat for a piece of maple with density 0.750 g/cm^3? Repeat for a ping-pong ball with an average density of 0.125 g/cm^3.
The spaceship moves past the Earth with a speed of 0.81c in a direction parallel to the floor of the ship. Find the angle the ladder makes with the floor, as seen by an observer on Earth. in °
A source emits sound uniformly in all directions. A radial line is drawn from this source. On this line, determine the radial positions of two points, 0.782 m apart, such that the intensity level at one point is 1.71 dB greater than that at the o
A water-skier is moving at a speed of 14.2 m/s. When she skis in the same direction as a traveling wave, she springs upward every 0.820 s because of the wave crests. When she skis in the direction opposite to that in which the wave moves, she spri
Mars has mass of 6.4 * 10 ^ 26 g and a radius of 3400 km. Phobos has a mass of 1.1 *10 ^19 g and radius of 11 km. Phobos orbits mars with a semimajor axis of 9380 km. What is the mean denisit of Mars and Phoos in g/ cm^3?
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