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1. ### Physics HELP?

... = 0.16² + v² for v in m/s and so v = 0.61 m/s ◄ The bee needs to build in a easterly component to ...wind. So his resultant southerly speed is v - 0.63m/s * cos15º...

1 Answers · Science & Mathematics · 12/09/2019

2. ### Physics help!! While sitting on a tree branch 12 m above the ground, you drop a chestnut. When the chestnut has fallen 2.0 m?

Now find the time time for first nut to fall to the ground. 12=1/2 g t^2. Time to fall...nut cover the distance. s=vo(t-t1) +1/2 g(t-t1)^2= 1/2 g t^2 Now solve for v0, the initial velocity of the second nut.

1 Answers · Science & Mathematics · 12/09/2019

3. ### Physics Question: An electron with a speed of 7.28 × 108 cm/s in the positive direction of an x axis enters an electric field?

Then I've mistaken you for another poster that posted this question and then ...7.05e6 m/s = 7.05e8 cm/s Actually, we don't need the velocity V. We need the % KE lost, which...

2 Answers · Science & Mathematics · 08/09/2019

4. ### Physics? If two people were competing in a 1-km race. Who would win given the circumstances below and the accelerations being constant?

...reach their max. Tleg2 maintain that speed through the race. P1 for the first leg we know - constant velocity - distance...!) We already know the time, but we need to find DISTANCE for the second leg...

1 Answers · Science & Mathematics · 05/09/2019

5. ### Can someone help me answer these two questions for physics?

...direction. The ball has lost no speed, so we assume that no energy is lost...as the angle of reflection. We would need to see how the wall is ... or 50 meters. As for the direction, use arctan(3/4) to find the...

3 Answers · Science & Mathematics · 26/08/2019

6. ### I need help with my physics test?

No one is answering 8 questions for 10 points, maybe list each question individually. The solution to number 1 is in the Comment section

3 Answers · Science & Mathematics · 03/09/2019

7. ### Consider an elevator car (lift) with a mass of 700kg which call carry up to 600kg of passengers. Use g = 10ms^-2.?

The speed is not needed for the total energy required if any gain in kinetic energy at the beginning is used in permitting the elevator to coast to a stop. E = mgh = ( 700+600)*10 * 9 = 117 kJ approximately.

2 Answers · Science & Mathematics · 15/08/2019

8. ### ball rolling on a hemisphere.?

a) (mVmax^2) / r = m g Vmax = sqrt(g / r) b) L = r m sqrt(2/3)Vmax L = m sqrt(2 g r / 3) c) Em = 1/2 m V^2 - m g r (1 - cosα) V^2 = [Vmax^2 + 2 g r (1 - cosα)] then Em = 1/2 m [Vmax^2 + 2 g r (1 - cosα)] - m g r (1 - cosα) Em = 1/2 m...

2 Answers · Science & Mathematics · 06/08/2019

9. ### NEED PHYSICS HELP ON THIS SPECIFIC QUESTION...?

(1/2)v^2 = (1/2)(65^2)+9.8(125) solve for v

1 Answers · Science & Mathematics · 31/07/2019

10. ### A possible way to enhance and open a dormant time portal?

Nice implementation of kozyrev torsion theories. First you need to determine the ambient speed of time propagation and its relation to the time span it traverse. Is it a...

5 Answers · Science & Mathematics · 23/07/2019