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a circular roller coaster has radius 30 m. The speed at the bottom is 37.0 m/s. A 50 kg girl is sitting on a scale. What does it read in kilograms at the top of the ride?
a ball leaves a 0.60 meter high table with an initial horizontal velocity of 2.4 ms. predict the time required for the
A 2.50 cm by 2.50 cm parallel-plate capacitor has a 2.30 mm spacing. The electric field strength inside the capacitor is 6.00×10^4. What is the potential difference across the capacitor
The maximum speed of a small girl on a swing is 3.96m/s. Calculate how high above the ground is she at her highest point
A proton is moving along the axis of a uniformly charged thing ring of 20nC/cm. The radius of the ring is 5cm. what initial speed does it need to be able to cross the plane of the ring
When two parallel slits are illuminated with monochromatic light of wavelength 632.8 nm, What is the distance between the parallel slits
An ideal step-down transformer has a primary coil of 300 turns and a secondary coil of 28 turns. What is the voltage in the secondary coil
A man driving a car toward a large vertical wall sounds his horn. The car is traveling at 81 km/h. What is the frequency of the car's horn
A hollow non-conductiong sphere has a uniform charge density ?. The inner and outer radius of the sphere are r1 and r2m respectively. What is the total charge of this sphere
At very fast car races the sound of the engine as a car approaches is much different than when it passes you. How fast would the car need to be going to have the change in frequency be one octave
A solenoid 3.0 cm long consists of 8942 loops of wire. If the magnetic field inside the solenoid is 1.0 T, what is the magnitude of the current that flows through it
Rivets can be cooled before they are put in place, thus when they reach equilibrium temperature they are more firmly fixed in place. If the volume expansion of iron is 35.0 X 10-6 K-1
If you know the mass of a star and a planet's radius and speed at perihelion (closest approach to the star), What is its speed and distance from the Sun at aphelion
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