Physics, 27.06.2019 03:50 shartman22
As a city planner, you receive complaints from local residents about the safety of nearby roads and streets. one complaint concerns a stop sign at the corner of pine street and 1st street. residents complain that the speed limit in the area ( 89 km/h) is too high to allow vehicles to stop in time. under normal conditions this is not a problem, but when fog rolls in visibility can reduce to only 47 meters. because fog is a common occurrence in this region, you decide to investigate. the state highway department states that the effective coefficient of friction between a rolling wheel and asphalt ranges between 0.689 and 0.770 , whereas the effective coefficient of friction between a skidding (locked) wheel and asphalt ranges between 0.450 and 0.617 . vehicles of all types travel on the road, from small cars with a mass of 571 kg to large trucks with a mass of 3991 kg. considering that some drivers will brake properly when slowing down and others will skid to stop, calculate the minimum and maximum braking distance needed to ensure that all vehicles traveling at the posted speed limit can stop before reaching the intersection.
Answers: 1
Physics, 22.06.2019 11:00
The dot diagram represents the motion of the motorcycle as it moves from left to right
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Physics, 22.06.2019 19:30
Coal contains energy. a. light b. kinetic c. chemical d. mechanical
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Physics, 22.06.2019 19:50
An electron moves with a constant horizontal velocity of 3.0 × 106 m/s and no initial vertical velocity as it enters a deflector inside a tv tube. the electron strikes the screen after traveling 26 cm horizontally and 19 cm vertically upward with no horizontal acceleration. what is the constant vertical acceleration provided by the deflector? (the effects of gravity can be ignored.)
Answers: 2
Physics, 23.06.2019 00:10
An astronaut floating in space is trying to use her jetpack to get back to her space station, but she is being pulled away by a nearby planet, as shown in the image below. her jetpack provides a constant thrust of 310 n. if she angles her jetpack in such a way that it cancels out the vertical force due to the planet's gravity, what is her net horizontal force? thaud 487 o a. 54.8 n toward the space station o b. 212.9 n toward the space station o c. 185.2 n toward the space station o d 956 n toward the space station
Answers: 1
As a city planner, you receive complaints from local residents about the safety of nearby roads and...
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