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A flowerpot is knocked odd a balcony from a height (d) above the sidewalk. It falls toward an unsuspecting man of height (h) who is standing below. Assume the man requires a time interval of (?t) to respond to the warning. How close to the sidewalk can the flowerpot fall before it is too late for a warning shouted from the balcony to reach the man in time? Use the symbol (v) for the speed of sound.
An athlete executing a long jump leaves the ground at a 35° angle and lands 7.30 m away.
A thin film with index of refraction n = 1.48 is placed in one arm of a Michelson interferometer, perpendicular to the optical path. what is the film thickness
A 1.33kg dense mass is on the end of 4.50m "string", What Would be the period of the pendulum on earth
A uniform 250 ladder rests against a perfectly smooth wall, making a 40.0 angle with the wall. What is the friction force on the ladder at the floor
if you have a 20 by 20 square opening and you need an equalaterial triangle to span the opening what are the smallest
A softball of mass 0.220 kg that is moving with a speed of 5.5 m/s (in the positive direction) collides head-on and elastically with another ball initially at rest. Calculate the mass of the target ball
A plane heads due north while a crosswind blows west. The plane's resultant velocity is 620 km/h, 22° west of north. What is the velocity of the wind
The arm in Coulomb's torsion balance was a rod with a charged ball at one end and a counterweight on the other. what is the torque exerted on the balance arm
q1. shell fired from a cannon has a muzzle speed speed as it leaves the barrel of 800 fts. the barrel makes an angle
question1air is blown throughout a circular and horizontal venturi tube. the diameters of narrow and wider sections of
What is the minimum initial speed of the dart if it is to hit a monkey before it hits the ground, which is 11.2 m below the initial position of the monkey, if x=50m and h=10m?
Derive the magnitude of the angular momentum vector of the electron in the ground state in tritium.
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