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A bathtub is knocked off a ledge 20.0m above a road and falls toward an unsuspecting man 1.75-m tall who is standing below on the raod. How close to the road can the bathtub fall before it is too late for a warning shouted from the ledge to reach the man in time? (assume the man requires 0.300s to respond to the warning).
an automobile traveling 95 kmh ovetakes a 1.10 km long train traveling in same direction. the train speed is 75 kmh.
The nearest star to Earth is 4.3 light years away. How long does the trip take according to earth observers
A vertical spring with a spring constant of470N/m is mounted on the floor. From directly above the spring, which is unstrained, a 0.30 kg block is dropped from rest.
An electric field is constant at every point on a square surface that is 0.80 m on a side. Calculate the electric flux E passing through the surface
The weight of the heavy object is W = 200N. Assume that the system is in equilibrium. What is the tension in each of the three vertical segments of the rope? What is the tension in the cable that suspends the left pulley to the ceiling?
a 16.0-kg enters a water slide that has a entrance 2.50 m above the ground exit. when the child exits her speed is 3.50
A 103 kg fullback runs at the line of scrimmage. A constant force of 3399 N must be exerted on him to bring him to rest in a distance of 1.2 m in a time interval of 0.27 s. How fast was he running initially
stronomers discover an exoplanet (a planet of a star other than the Sun) that has an orbital period of 3.13 Earth years in its circular orbit around its sun, Find the radius of the exoplanet\'s orbit
you are to determine the power rating of the motor in an elevator system. the elevator with a full load weights 2000 kg
The oxygen molecule O2 has a total mass of 5.30 x 10-26 kilogram and a rotational inertia of 1.94 x 10-46 kg·m2 about an axis through the center of the line joining the atoms and perpendicular to that line. Find the molecule angular speed about th..
A Swimmer speed in still water is 1.85m/s. If the boat is traveling north directly across a river whose westward current has a speed of 1.2m/s. At what upstream angle must the boat head
X-rays with wavelengths of 0.2597 nm are detected at a scattering angle of = 170° in a Compton-scattering experiment. calculate the energy of an incident photon
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