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Two billiard balls of equal mass undergo a perfectly elastic head-on collision. If one ball's initial speed was 2.00m/s, and the other's was 2.80m/s in the opposite direction, what will be their speeds after the collision?
A friend in a spaceship travels past you at a high speed. Hetells you that his ship is 24 m long andthat the identical ship you are sitting in is 18 m long. According to your observations, what is the speed of your friend's ship
A 35-turn circular coil of wire has a diameter of 0.57 m. find the strength of the average emf generated in the coil
A circular wire loop of area 0.18m squared carries a current of 4 A. the coil lies in a horizontal plane with the current flowing in the counterclockwise direction when viewed from above. At this point the earth’s magnetic field is 1.2x10^-4 T direct..
Steve Romeo is throwing pebbles gently up to Sara Juliet's window, and he wants the pebbles to hit the window with only a horizontal component of velocity. Compute how fast are the pebbles going when they hit her window
a cannon fires a 9 lb projectile with an initial velocity of 60 ms at an angle of 15 degrees. assuming that air
While in outer space, a small however powerful, spherical shaped light source is turned on with us. The light source delivers 1.00 kW/m2 at1.00 cm from its center. There is a small particle of space dust at rest, 10.0 cm away from the center of the l..
Two parallel square metal plates (side length: 13 cm) are separated by a dielectric material with a dielectric constant 3.9 and a thickness of 2.4 mm. Find the energy stored on the capacitor
Suppose I mis-measure the apparent ?ux from a galaxy by 10%, and that I’m using the Tully-Fisher relationship to derive the galaxy’s distance. Assuming that the Tully-Fisher relationship and my measurement of the rotation speed of the galaxy are ..
Two capacitors, C1 = 25 µF and C2 = 3.0 µF, are connected in parallel and charged with a 140 V power supply. Calculate the total energy stored in two capacitors.
The number of radioactive nuclei present at the start of an experiment is 4.701015. The number present 22 days later is 8.441014. What is the half-life (in days) of the nuclei?
A bag of potato chips contains 2.00 L of air when it is sealed at sea level at a pressure of 1.00 at m and a temperature of 20.0°C. What will be the volume of the air in the bag if you take it with you, still sealed, to a higher altitude where the te..
A playground is on the flat roof of a city school, 4.6 m above the street below (see figure). The vertical wall of the building is h = 6.10 m high, forming a 1.5-m-high railing around the playground.
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