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A golfer hits a shot to a green that is elevated 2.80 m above the point where the ball is struck. The ball leaves the club at a speed of 17.7 m/s at an angle of 41.0? above the horizontal. It rises to its maximum height and then falls down to the green. Ignoring air resistance, find the speed of the ball just before it lands.
A jet with mass m = 130000.0 kg jet accelerates down the runway for takeoff at 1.5 m/s2. What is the net horizontal force on the airplane as it accelerates for takeoff
A particle moves with constant acceleration a . The expression vi+at represents the particle's velocity at what instant in time? Here are the choices.
The loaded cab of an elevator has a mass of 3.0 x10^3 kg and moves 171 m up the shaft in 23s at constant speed. At what average rate does the force from the cable do work on the cab.
A solid cylinder (radius = 0.200 m, height = 0.170 m) has a mass of 19.8 kg. This cylinder is floating in water. How much of the height of the cylinder is in the oil
When you submerge a 1 kg gold statue into the water and measure the volume of displaced water, show that, for pure gold, the volume of water displaced will be 51.8 cm^3.
A coffee filter of mass 1.5 grams dropped from a height of 2 m reaches the ground with a speed of 0.7 m/s. How much kinetic energy Kair did the air molecules gain from the falling coffee filter? begin from the Energy Principle, and choose as the s..
A sound wave travels in air with frequency 1372 Hz. (Assume the temperature of the air is 20 degrees C). If we can hear the sound at a level of 25 dB, what is its intensity? (The minimum intensity audible to humar ear is I= 1.0 x 10^-12 W/m^2). What ..
Potassium is an essential element that normally comprises about 0.30% of a person's body mass. What's the potassium activity in a 69kg person
a jet cruising at 26400 feet descends 96 miles away from a jet cruising at 31680 feet which is 120 miles from logan
A 2.5 meter long elastic cord is fixed at both ends. at what frequency should this cord be vibrated such that a n-10 standing wave is produced
The plates of a parallel-plate capacitor are 3.00mmapart, and each carries a charge of magnitude 75.0nC. The plates are in vacuum. What is the area of each plate
A weather balloon is designed to expand to a maximum radius of 24 m at its working altitude, where the air pressure is 0.030 atm and the temperature is 200 K. what is its radius at liftoff
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