Physics, 17.12.2019 17:31 hjlhdjfhjh
Acar at the indianapolis-500 accelerates uniformly from the pit area, going from rest to 305 km/h in a semicircular arc with a radius of 196 m.
determine the tangential acceleration of the car when it is halfway through the turn, assuming constant tangential acceleration.
m/s2
determine the radial acceleration of the car at this time.
m/s2
if the curve were flat, what would the coefficient of static friction have to be between the tires and the roadbed to provide this acceleration with no slipping or skidding?
Answers: 3
Physics, 21.06.2019 15:50
The metal wire in an incandescent lightbulb glows when the light is switched on and stops glowing when it is switched off. this simple process iswhich kind of a change? a.a physical changeb. a chemical changec. a nuclear changed. an ionic change
Answers: 1
Physics, 22.06.2019 05:40
An ideal polarizer with its transmission axis rotated 30 degrees to the vertical is placed in a beam of unpolarized light of intensity 10w/m^2. after passing through the polarizer, what is the intensity of the beam? a. 8.7 w/m^2 b. 7.5 w/m^2 c. 5.0 w/m^2 d. 10 w/m^2 e. 2.5 w/m^2
Answers: 1
Physics, 22.06.2019 16:30
Place several e-field sensors at a few points on different equipotential lines, and look at the relationship between the electric field and the equipotential lines. which statement is true? 1-at any point, the electric field is perpendicular to the equipotential line at that point, and it is directed toward lines of higher voltages. 2-at any point, the electric field is perpendicular to the equipotential line at that point, and it is directed toward lines of lower voltages. 3-at any point, the electric field is parallel to the equipotential line at that point.
Answers: 1
Physics, 22.06.2019 17:00
In the future, people will only enjoy one sport: electrodisc. in this sport, you gain points when you cause metallic discs hovering on a field to exchange charge. you are an electrodisc player playing the popular four disc variant. the disks have charges of qa = β8.0 Β΅c, qb = β2.0 Β΅c, qc = +5.0 Β΅c, and qd = +12.0 Β΅c. (1) you bring two disks together and then separate them. you measure the resulting charge of these two disks and find that it is +5.0 Β΅c per disk. which two disks did you bring together? (a) a and b (b) a and c (c)a and d (d)b and c(e) b and d (f) c and d. (2) you bring three disks together and then separate them. you measure the resulting charge of these three disks and find that it is +3.0 Β΅c per disk. which three disks did you bring together? a, b, and c (a) a, b, and d (c) a, c, and d (d) b, c, and d. (3) given the resulting charge of each disk measured in (b) is +3.0 Β΅c, how many electrons would you need to add to a disk of this charge to electrically neutralize it? electrons
Answers: 3
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