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?
(a) 4 × 10-25 kilograms
(b) 3 × 10-27 seconds
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A plane with a wingspan of 35.0 m is flying horizontally at a speed of 280 m/s over a location where the Earth's magnetic field is 45.0 ?T at 55° below the horizontal. What voltage is generated between the wingtips?
a. 3.6E–1 V b. 2.5E–1 V c. 6.3E–1 V d. 4.4E–1 V
Explain how gravity is used to explain the presence of the tides we experience on Earth
What will be an ideal response?
You put one ear on a steel railroad track while your friend a distance of 400 m away taps on the rail with a stone. You will hear the sound through the steel rail in _________ and through the air where the speed of sound is 344 m/s in _______
a. 0.08 s b. 0.5 s c. 1.2 s d. 2.4 s
In a hydraulic garage lift, the small piston has a radius of 5.0 cm and the large piston has a radius of 15 cm
What force must be applied on the small piston in order to lift a car weighing 20,000 N on the large piston? Assume the pistons each have negligible weight. A) 6.7 × 103 N B) 5.0 × 103 N C) 2.9 × 103 N D) 2.2 × 103 N