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A small airplane accelerates from rest at a constant acceleration of 1.2 m/s^2 along the runway. The plane rises from the runway after traveling 150 m from its starting point. How long did this take?
A 4.00 kg mass is connected by a light cord to a 3.00 kg mass on a smooth surface. The pulley rotates about a frictionless axle and has a moment of inertia of .5 kg m2 and a radius of .30 m.
At the local grocery store, you push a 12.7-kg shopping cart. You stop for a moment to add a bag of dog food to your cart. What was the mass of the dog food
A dentist's drill starts from rest. After 2.90 s of constant angular acceleration it turns at a rate of 2.2 104 rev/min. Find the drill's angular acceleration
24.0g of copper pellets are removed from a 300 ? C oven and immediately dropped into 120mL of water at 24.0 ? C in an insulated cup. What will the new water temperature be
A small object begins a free-fall from a height of H = 82.5 m at t0 = 0 s. At what height from the ground will the two objects first meet
In a friendly game of handball, you hit the ball essentially at ground level and send it toward the wall with a speed of 13 m/s at an angle of 24° above horizontal. How high is the ball when it hits the wall
When playing fortissimo (very loudly), a trumpet emits sound energy at a rate of 0.750 W out of a bell (opening) of diameter 13.2 cm. What is the sound intensity level right in front of the trumpet
A)Determine the magnitude and direction of the electric field at a point 7.8 meters from this charge B) How far from this charge does the electric field have a magnitude of 2 N/C
A 120cm3 box contains helium at a pressure of 1.50atm and a temperature of 80.0?C. What is the initial thermal energy of each gas
Infrared light of wavelength 1.17 um illuminates a 0.34-mm-diameter hole. What is the angle of the first dark fringe in degrees
A potter's wheel (a solid, uniform disk) of mass 6.0kg and radius 25cm spins about its central axis with an angular speed of the wheel is 15rpm, Find the new angular speed of the system in rpm
Two ice skaters, Daniel (mass 65.0 kg) and Rebecca (mass 45.0kg), are practicing. Daniel stops to tie his shoelace and,while at rest, find direction of Daniel's velocity after the collision
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