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A special electronic sensor is embedded in the seat of a car that takes riders around a circular loop-the-loop at an amusement park. The sensor gauges the magnitude of the normal force that the seat exerts on a rider. The loop-the-loop ride is in the vertical plane and its radius is 21 m. sitting on the seat before the ride starts, a rider is level and stationary, and the electronic sensor reads 610 N. At the top of the loop, the rider is upside-down and moving, and the sensor reads 330 N. What is the speed of the rider at the top of the loop?
a child throws a penny off of the eiffel tower h 324m with a downward velocity of magnitude v0 13 ms. find the speed
Sunlight strikes a piece of crown glass at an angle of incidence of 40.0o. Calculate the difference in the angle of refraction between a red (660 nm) and a violet (410 nm) ray within the glass.
What is the resistance of a light bulb that uses an average power of 55 W when connected to a 60Hz power source with a peak voltage of 170 V? What is the resistance of a 80 Wbulb?
What least heat is needed to bring 80 of water at 20 to the boiling point and completely boil it away? (answere in Joules).
The springs of a 1,349.37 kg car compress 5.0 mm when its 68-kg driver gets into the driver's seat. If the car goes over a bump, what will be the frequency of vibrations
A single constant force F = (3 i + 4j) N acts on a 3.85 kgparticle. What is the change in the potential energy
The wire is cut at point P. Will the potential difference between points A and B increase, decrease, or remain the same? Give reason for.
how fast is the mass moving when leaves the spring. Two forces, and , act at a point. has a magnitude of 9.00 and is directed at an angle of 65.0 degrees above the negative x axis in the second quadrant. has a magnitude of 6.00 and is directed at a..
the mayor of your home town is worried that magnetic fields might cause cancer and proposes that the electric power
A magnetic field is perpendicular to the plane of a single-turn circular coil. The magnitude of the field is changing, so that an emf of 0.87 V and a current of 3.2 A are induced in the coil. The wire is the re-formed into a single-turn square coil, ..
Two 29.0%u2212cm -focal-length converging lenses are placed 14.0cm apart. An object is placed 39.0cm in front of one lens. Where will the final image formed by the second lens be located
A 4.0 kg mass is connected by a light cord to a 3.0kg mass ona smooth surface. The pulley rotates about a frictionlessaxle and has a moment of inertia of 0.5kg m^2 and a radius of.30m. Assuming that the cord does not slip on the pulley,
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