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1. ### A jet takes flight while travelling down a 1.80km. It barely makes it off the ground after it recahes the end of the runway, taking 37.9s. ?

acceleration a = 2d /t^2 = 3600/37.9^2 = 2.506 m/sec^2 end speed V = a*t*3.6 = 2.506*37.9*3.6 = 342 km/h

3 Answers · Science & Mathematics · 23/02/2020

2. ### Is it dangerous to swap sim cards for 1 sec with a stranger?

duh

1 Answers · Entertainment & Music · 23/02/2020

3. ### Am I wrong, or the test?

Yep, to explain the equations, it can be deduced by taking the force in the vertical direction, i.e. the propulsion force - the force of gravity. For the horizontal, since resistance s negligible, the only force is the propulsion force in the horizontal direction. Anyhow, when the height...

3 Answers · Science & Mathematics · 18/02/2020

4. ### help with physics!!!!?

... = 0.57*(7.5^2/2+9.8*2) = 27.2 joule caa = Va^2/L = 56.25 m/sec^2 Ta = m*(caa-g) = 0.57*(56.25-9.8) = 26.5 N North ...

2 Answers · Science & Mathematics · 14/02/2020

5. ### How much energy (in KJ) does a mole of photons with a frequency of 4.60 x 10^14 s^-1 have?

...per photon: E = 6.62 x 10^-34 Joules second x 4.60 x 10^14 sec^-1 E = 3.045 x 10^-19 Joules E per mole of photons...

1 Answers · Science & Mathematics · 11/02/2020

charge Q = 12.5 (A) * 5*10^-3 (sec) = 62.5 mA*sec (mCoul.) voltage V = E (V*A...

2 Answers · Science & Mathematics · 10/02/2020

7. ### Related rate help please!?

...the bottom of the ladder is moving away from the wall at 5/6 ft per sec, or 10 inches per second

2 Answers · Science & Mathematics · 09/02/2020

8. ### A baseball player uses a pitching machine to help him improve his batting average. He places the 48.6 kg machine on a frozen pond.?

Recoil speed RV = -mb*Vb/mm = -(56.2*10^-3*0.419*10^2)/48.6 = 0.048 m/sec

3 Answers · Science & Mathematics · 09/02/2020

9. ### A 61.5 kg ice skater moving to the right with a velocity of 2.95 m/s throws a 0.141 kg snowball to the right with a velocity of 37.8 m/s?

1) Momentum I = 61.5*2.95 Kg*m/sec is conserved, therefore Vis = (61.5*2.95 -0.141*37.8)/61.5 = 2.86 m/sec 2) V'is = (0.141*37.8)/(0.141+57.3) = 0.093 m/sec

2 Answers · Science & Mathematics · 09/02/2020

10. ### A revolutionary war cannon, with a mass of 2010 kg, fires a 21.9 kg ball horizontally. The cannonball has a speed of 106 m/s after it has l?

...+mc*Vc = 0 Vc = -mb*Vb/mc = 21.9*106/2010 = -1.15 m/sec Ball speed relative to the ground Vbg = Vb+Vc...

3 Answers · Science & Mathematics · 09/02/2020