Physics, 22.09.2020 14:01 hsjsjsjdjjd
A tortoise and hare start from rest and have a race. As the race begins, both accelerate forward. The hare accelerates uniformly at a rate of 1.4 m/s2 for 4.9 seconds. It then continues at a constant speed for 11 seconds, before getting tired and slowing down with constant acceleration coming to rest 102 meters from where it started. The tortoise accelerates uniformly for the entire distance, finally catching the hare just as the hare comes to a stop.
1) How fast is the hare going 2.4 seconds after it starts?
2) How fast is the hare going 8.9 seconds after it starts?
3) How far does the hare travel before it begins to slow down?
4) What is the acceleration of the hare once it begins to slow down?
Answers: 1
Physics, 22.06.2019 05:00
Aperson walking 1 mile everyday for exercise, leaving her front porch at 9: 00 am and returning to her front porch at 9: 25 am. what is the total displacement of her daily walk? a) 1 mileb) 0c) 25 minutes d) none of the above
Answers: 1
Physics, 22.06.2019 23:00
As seen in a us weather map, the h (or high) and l (or low) symbols indicate regions where surface air pressures are high or low, respectively, compared to surrounding areas. an h is plotted where the air pressure is highest and an l is plotted where the air pressure is lowest. proceeding outward and away from the center of a high pressure system, the air pressure "
Answers: 1
Physics, 23.06.2019 02:30
Intro: a solid ball of radius rb has a uniform charge density Ď. part a: what is the magnitude of the electric field e(r) at a distance r> rb from the center of the ball? express your answer in terms of Ď, rb, r, and Ďľ0. part b: what is the magnitude of the electric field e(r) at a distance r express your answer in terms of Ď, rb, r, and Ďľ0. part c: let e(r) represent the electric field due to the charged ball throughout all of space. which of the following statements about the electric field are true? check all that apply. e(0) = 0 e(rb)=0 limrââe(r)=0 the maximum electric field occurs when r=0 the maximum electric field occurs when r=rb the maximum electric field occurs as rââ.
Answers: 1
A tortoise and hare start from rest and have a race. As the race begins, both accelerate forward. Th...
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