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Ted is sitting in his lawn chair when Stella flies directly overhead, going southeast at 114.5 m/s. Five seconds later, a firecracker explodes 190 m east of Ted. What are the coordinates of the explosion in Stella's reference frame? Let Stella be at the origin, with her x-axis pointing to the east. What are the X and Y components?
The current indoor world record time in the 200-m race is 19.92 s, held by Frank Fredericks of Namibia (1996), Find the mean speed in meters per second corresponding to the record time for the 200-m event
A heat rate of 3kW is conducted through a section of an insulatingmaterial of cross-sectional area 10m2 and thickness2.5cm. If the inner (hot) surface temperature is 415oCand the thermal conductivity of the material is 0.2 W/m.K, what is the outer su..
You are on a roof, 14.0 m above ground. Dr singer who is 1.78 m tall is 5.0m from the building entrance. How long is the egg in the air
A planet orbits a star once every 2.99 107 s in a nearly circular orbit of radius 1.51 1011 m. determine the tangential speed of the planet
A 160 g trick baseball is thrown at 63 km/h . It explodes in flight into two pieces, How much energy, in joules, do the pieces gain in the explosion
A series RLC circuit has R = 500 ?, L = 35.1 mH, and C = 88.3 pF. What is the impedance of the circuit at resonance
A hockey puck is sliding across a frozen pond with an initial speed of 9.7 ms. It comes to rest after sliding a distance of 44.0 m. What is the coefficient of kinetic friction between puck and ice.
q1. a very long non conducting cylinder of diameter 10.0 cm carries charge distributed uniformly over its surface. each
Our closest stellar neighbor , alfa-centauri , is 4.3 light years away.it has been suggested that TV programs from our planet have reached this star and may have been viewed by the hypothetical inhabitants of a hypothetical planet orbiting this st..
You are standing on a sheet of ice that covers the football stadium parking lot in Buffalo; there is negligible friction between your feet and the ice. what is your speed after the collision
Two equal forces are applied to a door. The first force is applied at the midpoint of the door; the second force is applied at the doorknob. Which force exerts the greater torque
An eagle with a 2.1m wingspan flaps its wings back and forth 20 times per minute, each stroke extending from 45 degrees above the horizontal to 45 degrees below. what is the average angular velocity of the wing
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