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Q1. The maximum tension that a 0.5m string can tolerate is 14N. A 2.5kg ball is attracted to the string being whirled in a vertical circle. What is the maximum speed the ball can have at the top of the circle?
Q2. An electron passes through a slit of width 7.89 x 10-8 m. What is the uncertainty in the electron's momentum component in the direction perpendicular to the slit but in the plane containing the slit?
One side of the roof of a building slopes up at 34.0°. A student throws a Frisbee onto the roof. It strikes with a speed of 15.0 m/s and does not bounce, but slides straight up incline. The coefficient of kinetic friction between plastic and roof is ..
Driving in your car with a constant speed of 13 m/s, you encounter a bump in the road that has a circular cross section, as indicated in the figure. If the radius of curvature of the bump is r = 29 m, find the apparent weight of a 59-kg person in you..
Compute average magnetic flux through turn of inner solenoid
What is speed of the car just before it lands safely
A 100 arrow is shot perpendicularly from a bow whose effective spring constant is 500. If the bow is drawn 75 before shooting the arrow, to what height does arrow rise.
You and a friend each drive 67 km. You travel at 88.1 km/h, your friend at 952.6 km/h. How long would your friend wait for you at the end of the trip.
What is the dissimilarity between sprinters and nonathletes
The distance between the first and fifth minimum on a screen 60 cm behind the slits is 6.0 mm. What is the wavelength of the light used in this experiment.
Young's double-slit experiment is performed with 570 nm light and a distance of 2.00 m between the slits and the screen. The tenth interference minimum is observed 7.64 mm from the central maximum. Settle on the spacing of the slits.
He is sitting on a set of bathroom scales. He notes that scales show four times his normal weight. What is the radius of the loop, in meters.
What tension is necessary to tune string properly
A professor's office door is 0.94 wide, 2.2 high, 4.0 thick; has the mass of 23, and pivots on frictionless hinges. A "door closer" is attached to door and top of the door frame. When the door is open and at rest, the door closer exerts a torque of 5..
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