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Determination of the Initial Velocity of a Projectile from Range-Fall Measurements. After the horizontal projectile leaves the gun, what are the accelerations in the x and y directions?
Question on constant speed
an emergency vehicle siren is designed to emit an 8000 hz sound. you hear a 9143 hz tone as it approaches you at 40.0ms
A car is moving at a constant velocity for 3s until it is 3.0 m from a yellow light. It slows to a stop in 2.0s. It remains stopped for 50s and then speeds up for 2s.
a mixing beater consists of three thin rods each 10.0 cm long. the rods diverge from a central hub separated from each
The amplitude of a lightly damped oscillator decreases by 1.7% during each cycle. What percentage of the mechanical energy of the oscillator is lost
A proton accelerates from rest in a uniform electric field of650 N/C. At some time later, its speed is1.40 x 106 m/s. What is the magnitude of the acceleration of the proton?
when a current flows in an aluminum wire of diameter 4.35 mm the drift speed of the conduction electrons is 2.57 times
Two crates, of mass 77 kg and 108 kg, arein contact and at rest on a horizontal surface (Fig. 4-47). A 729 Nforce is exerted on the 77 kg crate.If the coefficient of kineticfriction is 0.15, calculate the following: the force that eachcrate exerts..
Suppose 4.00 g of hydrogen is separatedinto electrons and protons. Suppose also the protons are placed atthe earth's North Pole and the electrons are placed at the SouthPole. What is the resulting compressional force on the Earth?
At a distance r away from a point charge q, the electric potential is V = 600 V and the magnitude of the electric field is E = 200 N/C
Reaction time is the shortest time interval elapsed after the driver of a car decides to apply the break. (For example, the time wasted immediately after the driver sees a child standing on the road). Will the driver be able to stop in time
Two students stand opposite each other on the rim of the merry-go-round of 6m diameter and rotating at 12 rev/minute. Calculate the coriolis force on the ball
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