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related to: Need+for+Speed

1. ### Physics question: What is the height from which a car of mass m = 1350 kg must be dropped in order to acquire a speed v = 100km/h?

I so wanted to answer this question. However, my answer is "Anonymous" as your post is Anonymous. There is no need for an Anonymous question in this category,

1 Answers Ā· Science & Mathematics Ā· 22/11/2020

2. ### Some Physics HW :)?

Ā Ā  First up... don't forget to choose aĀ  BESTĀ  answer... !! speed , that is tangential velocity,Ā  v,Ā Ā  isĀ  :Ā Ā  Ā Ā Ā Ā Ā Ā  v =Ā  ( 2Ļr ) * ( # rev )Ā  /Ā  t All the objects have theĀ  sameĀ  value for Ā  2Ļr,Ā  just convert Ā  rĀ  to meters instead of cm beforeĀ  any calculations...

1 Answers Ā· Science & Mathematics Ā· 09/11/2020

3. ### I need help with physics. I don't understand what I'm suppose to do?

...39;d say velocity, because it is squared. But one could argue for radius, because it's in the denominator (and so small radii lead to big ...

1 Answers Ā· Science & Mathematics Ā· 10/11/2020

4. ### Modern Physics Question?

The cooled atoms have nothing to do with the answer. If you've calculated photons per second (and remember that ĀµW = ĀµJ/s), then you're done. photons/s = power (J/s) / energy per photon (J...

1 Answers Ā· Science & Mathematics Ā· 06/11/2020

5. ### Physics help?

mg tanĪø = mvĀ²/r vĀ²= r/m * mg tanĪø, but mass cancels v = ā(rg tanĪø) v = ā140*9.80665 * 0.3249 = 21.1m/sĀ  ((76.0 kph)) Your answer is correct except for missing units.

2 Answers Ā· Science & Mathematics Ā· 31/10/2020

6. ### HELP WITH PHYSICS?

...vertical component = 26sin22 = 9.7 m/s (b) time, t = horizontal distance / horizontal component of speed = 27.4/24 = 1.1 s (c) ball's height, s = ut+Ā½gtĀ² ...where u...

1 Answers Ā· Science & Mathematics Ā· 27/10/2020

7. ### Red light has a wavelength of 650 nm. Green light has a wavelength of 550 nm. The speed of light is 3Ć108 m/s?

... 2. f = 3e8m/s / 550e-9m = 5.45e14 Hz (or s^-1) 3. Doppler for stationary source: f = fā * (c+v)/c 5.45 = 4.62*(3e8 + v) / 3e8 ignoring...

1 Answers Ā· Science & Mathematics Ā· 27/10/2020

8. ### If time stops, would the laws physics and biology still apply?

...anything with a fist or whatever. Same problem. Yes, your body would need food and water at an accelerated rate... but ***not from your perspective...

3 Answers Ā· Science & Mathematics Ā· 26/10/2020

9. ### I need help with 2 questions?

... Ā  Ā  Ā Ļ = torque in Nā¢m Ā  Ļ = Ī±I torque required for that accel. Ā  P = ĻĻ power to hold that speed with Ļ friction Ā  Īø = Īøā + Ļāt + Ā½Ī±tĀ²...

1 Answers Ā· Science & Mathematics Ā· 26/10/2020

10. ### Phys help?

...Ā½*0.906rev/sĀ²*(0.193s)Ā² = 0.0748 revs C. For speeds , we need to convert the angular velocities to rads: v_t = 0.475*2Ļ rad/s...

2 Answers Ā· Science & Mathematics Ā· 31/10/2020