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Question1
A 8kg mass moves in a circular path of 4m radius on a frictionless horizontal table. It is attached to a string that passes through a frictionless hole in the center of the table. A second 28kg mass is attached to the other end of the string. The acceleration of gravity is 9.8m/s^2. Establish the period.
Question2
The radius of curvature of the track at the top of a loop-the-loop on a roller coaster is 12.0m. At the top of the loop, force the seat exerts on a passenger is 0.40 times her weight. How fast is the roller coaster moving at the top of the loop?
The rotor in a certain electric motor is a flat, rectangular coil with 88 turns of wire and dimensions 2.33 cm by 4.20 cm, What is the average power of the motor
How much time would it take for her to emit a net radiant.
A +20 nC point charge is placed on the x axis at x =2.0 m, What is the direction of the electric field at the origin
In a car collision, the driver's body must change speed from a high value to zero. This is true whether or not an airbag is used, How does it reduce injury
A car is designed to get its energy from a rotating flywheel (solid disk) with a radius of 1.50 m and a mass of 475 kg. Find the kinetic energy stored in the flywheel
In which scenario do you experience the larges acceleration? Explain why using physical principles you have learned.
A square aluminum plate 10.0cm on a side carries an electric charge of -2.88x10^-12C.
Find the electric field at the position of the electron. What is the potential difference in volts between the plates.
The nucleus of an atom consists of protons and neutrons (no electrons). A nucleus of a carbon-12 isotope contains six protons and six neutrons.
A light string is wrapped around a 0.20-kg hollow 0.080-m-radius hoop. What is the angular acceleration of the hoop
what is the magnitue of the magnetic field in the centre of a solenoid with a current of 1.25 A, Describe the right hand rule for solenoids
A research submarine has a 40.0cm -diameter window 8.30cm thick. The manufacturer says the window can withstand forces up to 1.10×106N
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