If a new force were discovered that had a range on the order of 10-18 meters: (a) predict the mass of the exchange particle. (b) how long is conservation of energy violated in the exchange of this particle?
What will be an ideal response?
(a) 4 × 10-25 kilograms
(b) 3 × 10-27 seconds
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Most of the modern large optical telescopes are refractors.
Answer the following statement true (T) or false (F)
A flatbed truck is carrying a 20.0-kg crate along a level road. The coefficient of static friction between the crate and the bed is 0.400, and the coefficient of kinetic friction is 0.300
What is the maximum acceleration that the truck can have if the crate is to stay in place relative to the truck? A) 8.00 m/s2 B) 3.92 m/s2 C) 196 m/s2 D) 78.5 m/s2 E) 7.84 m/s2
Fig. 10-3 illustrates a simplified roller bearing. The outer hollow cylinder has a radius of 1.20 cm and is stationary. The inner cylinder has a radius of 1.00 cm and is rotating at 9.00 rpm
Between the two cylinders are several small cylinders with a radius of 0.100 cm, which roll without slipping on both the inner and outer cylinders. Only one of these cylinders is shown in the figure. How long does it take a small cylinder to complete a full revolution around the inner cylinder? A) 6.00 s B) 14.7 s C) 5.64 s D) 0.542 s E) 1.38 s