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A car moving at a constant speed of 30m/s suddenly stalls at the bottom of a hill. The car undergoes a constant acceleration of -2m/s sq (opposite it's motion) while ascending the hill. Write the equations for the position and velocity as functions of time, taking x=0 at the bottom of the hill where Vo= 30m/s. Determine the maximum distance traveled by the car up the hill after stalling.
Pick what you think are the most reasonable choices for each parameter in the Drake equation and justify your choice. estimate the likely nearest distance to such a civilization
A female orb spider has a mass of 0.50g . She is suspended from a tree branch by a 1.1m length of 0.0020mm--diameter silk. how long does it take to reach the spider
A 266 kg log is pulled up a ramp by means of a rope that is parallel to the surface of the ramp. Find the tension in the rope
An ideal gas at 20 C consists of 2.2 X 10^{22} atoms. 4.3 J of thermal energy are removed from the gas. What the new temperature in C.
A concrete highway is built of slabs 8.0 m long (20°C). How wide should expansion cracks between the slabs be (at 20°C) to prevent buckling if the range of temperature is -35°C to +45°C.
Two spheres, fastened to "pucks" riding on a frictionless air track, are charged with +2 × 10-8 C, and +6 × 10-8 C, correspondingly. Both objects have the same mass. As they repel.
A hollow, thin-walled sphere of mass 12.0kg and diameter 47.0cm is rotating about an axle through its center. At the time 4.00s , find the angular momentum of the sphere
A long, current-carrying solenoid with an air core has 1670 turns per meter of length and a radius of 0.0194 m. What is the mutual inductance of this system?
An electric blanket is connected to a 120-V outlet, What is the resistance of the heater wire in the blanket
A 2.6-kg 10-cm-radius cylinder, initially at rest, is free to rotate about the axis of the cylinder. Find the magnitude of the torque exerted by the rope
Calculate the total number of electrons bombarding the target of an X-ray tube operated at 100 mA for 0.1 seconds
A woman holds a tube of lipstick 5.1 cm from a spherical mirror and notices that the image of the tube is inverted, Calculate the focal length of the mirror.
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