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A roller coaster at an amusement park has a dip that bottoms out in a vertical circle of radius r. A passenger feels the seat of the car pushing upward on her with a force equal to three times her weight as she goes through the dip. If r = 18.0 meter, find how fast is the roller coaster traveling at the bottom of the dip? m/s
A certain light truck can go around a flat curve having a radius of 150 m with a maximum speed of 32.0 m/s. With what maximum speed can it go
At time t = 0, a battery of 10 v is connected across points A and B in the given circuit. If the capacitors have no charge initially, at what time (in secs) does the voltage across them become 4 v?
One kilogram of dry air at STP conditions is exposed to 1.00 R of X-rays. One roentgen is defined by Equation 32.1 in Section 32.1. An equivalent definition can be based on the fact that an exposure of one roentgen deposits 8.30 x 10-3 J of energy pe..
Jill ( 60kg) is swinging on a rope swing that is 4m long, at what frequency does Jill need to pump her legs to get the swing going higher
An electron follows a helical path in a uniform magnetic field of magnitude 0.501 T. Calculate the electron speed
What would be the nature and height of the image?
you are given a spherical mirror and wish to determine its properties. you place an object on its axis 39.30 cm in
A whale comes to the surface to breathe and then dives at an angle of 20 degree below the horizontal.
How many revolutions per minute would a 29 {rm m}-diameter Ferris wheel require to make for the passengers to feel "weightless" at topmost point.
Susie Maroney from Australia set a women's record in long-distance swimming by swimming 93.625 km in 24 h. If she had a mass of 55 kg, how much kinetic energy did she have
If the mass of both weights is 225 gm, the first mass is located 20 north of east, the second mass is placed 20 south of east, and the transducer sensitivity is 0.5 volts/Newton, how large a voltage do you expect to measure? suppose the transducer..
A parallel-plate capacitor C is charged up to a potential V with a charge of magnitude Q on each plate. What is the potential difference across the plates in terms of V
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