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An excellent laboratory vacuum has a pressure of 5.00 multiply.gif 10-18 atm, or 5.05 multiply.gif 10-13 Pa. How many gas molecules are there per cubic centimeter in such a vacuum at 290 K?
The record distance in the sport of throwing cowpats is 81.1 m. This record toss was set by Steve Urner of the United States in 1981, Determine the initial speed of the projectile
A beam of unpolarized light in air is incident at an angle of 59.0? (with respect to the normal) on a plane glass surface. What is the angle of refraction of the transmitted beam
A car travels at a constant speed around the circular track or a radius of 2.6 km. it goes around the track once in 360 seconds.
A parallel combination of a 1.11-?F capacitor and a 2.89-?F one is connected in series to a 4.65-?F capacitor. compute the charge of each capacitor
The planet Mercury has a mass that is 5.00% of that of Earth, and its gravitational acceleration is gmercury = 3.70 m/s2. a) How long does it take for a rock that is dropped from a height of 2.63 m to hit the ground on Mercury?
A 2500-kg sport utility vehicle travelling at 92 km/h can be stopped in 0.25 s if it hits a concrete wall. Assume a 60 kg person was in the car that hit this wall. The velocity of the person equals that of the car both before and after the crash, and..
The rotor of an electric motor has rotational inertia Im = 5.12 x 10-3 kg·m2 about its central axis.Calculate the number of revolutions of the rotor required to turn the probe through 31.3° about its central axis
State the direction as an angle with respect to the +x axis.
A Molecule of DNA is 2.17 um long. The ends of the molecule become strongly ionized: negative on one end, positive on the other. The helical molecule acts like a spring and compresses 0.78% upon becoming charged. Determine the effective spring con..
An oil drop whose mass is determined to be 3.3x10^-15 is held at rest between two large plates separated by 1cm while the potential difference between them is 340 V. How numerous excess electrons does this have here.
A hollow aluminium cylinder 20 cm deep has an internal capacity of 2.000 L at 20.00C. It is completely filled with turpentine and then warmed to 80.00C. (i) How much turpentine overflows? (ii) If it is then cooled back to 20.00 C, how far below th..
Find out the type of mirror and how far the object is
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