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An ant travels in a perfectly straight line in the –x direction some distance. It turns, and then travels several new displacements, 30.0O above the +x axis, again, in a straight line, for some distance. The final leg of its little ant journey is a displacement of 15 cm, 40.0O below the +x axis, and its back at its starting point. What are the magnitudes of the first two displacements?
An Emergency Vehicle Siren is designed to emit an 8000 Hz sound. You hear a 9143 Hz tone as it approaches you at 40.0m/s and a 7273 Hz tone as it recedes at 32 m/s. What is the temperature of the air
Many communications satellites orbit the earth in geostationary orbits. (They appear to remain in the same positions in the sky for observers on the earth's surface.) If such a satellite orbits at a height of 40,000 km, estimation the time delay in a..
A guitar string produces 4 beats per second when sounded with a 350-Hz tuning fork and 9 beats per second when sounded with a 355-Hz tuning fork. What is the vibrational frequency of the string
q1. a 75-kg person sits on a 3.7-kg chair. each leg of the chair makes contact with the floor in a circle that is 1.5
a ski gondola is connected to the top of a hill by a steel cable of length 660 m and diameter 1.5 cm. as the gondola
what is the net force of a 4.0 n force and an 9.0 n force acting on an object for each of the following conditions?a
What is the current in amperes in a wire of radius. The parallel plates in a capacitor, with a plate area of 8.70 cm2 and an air-filled separation of 3.30 mm, are charged by a 8.90 V battery.
A person weighs 75 N on the surface of the moon and 427 N on the surface of the Earth. What is the acceleration of gravity on the surface of the moon
The string in a yo-yo is wound around an axle of radius 0.537 cm. The yo-yo has both rotational and translational motion, like a rolling object, and has mass 0.320 kg and outer radius 1.97 cm. How long does it take to fall
A baseball player runs 27.4meters from batter's box to first base,overruns first base by 3.0 meters,and then returns to first base. Compared to the total distance traveled by the player,magnitude of the players total displacement from the batters ..
A 73.0 kg base runner begins his slide into second base when he is moving at a speed of 4.1 m/s. The coefficient of friction among his clothes and Earth is 0.70. He slides so that his speed is zero just as he reaches the base.
An automobile has a vertical radio antenna 1.1m long. Theautomobile travels at 79.4 km/h on a horizontal road where Earth'smagnetic field is 58.5 μT directed toward the north and downward at an angle of 46.9o below the horizontal.
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