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A ball of mass m makes a head-on elastic collision with a second ball (at rest) and rebounds with a speed equal to 0.390 its original speed. What is the mass of the second ball?
Two thin lenses with a focal length of magnitude 12.0cm, the first is diverging and the second is converging, are located 9.00cm apart. Can you help me determine if the image is real or virtual
Estimate the initial speed of that car assuming a level road.What would be the equilibrium temperature when a 252 block of copper at 275 is placed in a 136 aluminum calorimeter cup containing 807 of water at 14.90.
A clock has a pendulum that performs one full swing every 1.5 s (back and forth). What is the length of the pendulum
What is the speed of the projectile
A rocket, which is in deep space and initially at rest relative to an inertial reference frame, has a mass of 59.6 × 105 kg, of which 7.27 × 105 kg is fuel. What is the rocket's thrust
q1. how high does a rocket have to go above the earths surface until its weight is 0.8 times its weight on the earths
A uniform rope of uniform weight W hangs between two trees. The ends of the rope are the same height and they each make and angle theta with the trees. What is the tension at either end of the rope. Find the tension at the middle of the rope.
When at rest, two trains have sirens that emit a frequency of 300 Hz. The trains travel toward one another and toward an observer stationed between them, What is the speed of the second train
A 2.9-kg box is sliding along a frictionless horizontal surface with a speed of 1.8 m/s when it encounters a spring. Determine the initial speed the box would need in order to compress the spring by 1.2 cm
A projectile of mass 0.1kg travelling horizontally through the air with speed v(t) experiences a drag force D(t) whose magnitude is given by: D(t)=0.001[v(t)]^2. Calculate the speed of the projectile
You bike at 11.5 m/s directly away from your neighbor\'s trumpet sound and toward the sound of another neighbor\'s trombone, What frequency is the trombonist producing
At one time, television sets used "rabbit-ears" antennas. Such an antenna consists of a pair of metal rods. The length of each rod can be adjusted to be one-quarter of a wavelength of an electromagnetic wave whose frequency is 125 MHz. How long is ea..
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