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A rocket-driven sled running on a straight, level track is used to investigate the effects of large accelerations on humans. One such sled can attain a speed of 1640 km/h in 2.00 s, starting from rest. Find (a) the acceleration (assumed constant) in terms of g and (b) the distance traveled.
A certain laser outputs pure blue light (photon energy 3.1 eV) with power 400 milliwatts (0.4watts). How many photons per second does this laser emit
A projectile is launched from a 300 m high cliff at an angle of 30? with an initial velocity of 150 m/s. (g=9.8m/s2). determine the Magnitude of the velocity on impact
A woman stands at the edge of a carousel that is rotating without friction at 0.80 rad/s. The carousel has a radius of 2.0m and a moment of inertia of 600 kg m2. What is now the angular speed of the carousel
A Cessna aircraft has a lift-off speed of 120 km/h. How long does it take the aircraft to become airborne
Assume the radii you use for the experiment are 6cm and 8cm. how much would the critical velocity change
A hydrogen atom that is initially at rest absorbs a photon with an energy of 21 eV. What is the momentum of the atom
Electric current is creating magnetic field. If an electric current is flowing througha coild wire such that it circles every loop in clockwise directionwhile moving from the begining of the coil to its end, where wouldbe north and south poles of ..
A fire helicopter carries a 649 kg bucket of water at the end of a 18.7 m long cable. Flying back from a fire at a constant speed of 44.2 m/s, Determine the force of air resistance on the bucket
You hike 2/3 of the way to the top of the hill at a speed of 3.5 miles per H and run the final third at a speed of 5.6 miles per H
a swimming pool measures 10 meters wide by 50 meters long by 4 meters deep. what is the water pressure at this point
Starting from rest, your friend dives from a high cliff into a deep lake below, yelling in excitement at the thrill of free-fall on her way down. How long has your friend been in the air when she emits the yell whose frequency shift you hear
Anemometers (pictured) are used to measure wind speeds. Wind striking the cups causes the assembly to rotate; a gauge measures the frequency of this rotation and translates the data into wind speed. calculate the number of turns in the coil wire
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