Solving for Time in Scalar Product Equation

  • Thread starter Thread starter kkershaw
  • Start date Start date
  • Tags Tags
    Factorial
AI Thread Summary
The discussion revolves around solving the equation d = !(v + 0)t for time (t), with given values of d = 0.984 and v = 1.9. The user is confused about the "!" symbol in the equation, which is not standard in this context. Another participant suggests that it might be a notation error and proposes that the equation could be d = |(v + 0)t|, indicating a scalar product of velocity and time. The user attempts to solve for t by ignoring the "!" but finds that their calculated value does not yield the correct result. Clarification on the equation's notation is essential for accurate problem-solving.
kkershaw
Messages
1
Reaction score
0

Homework Statement


I am solving for t using this equation: d = !(v + 0)t;
My d=.984 and v=1.9
I don't know what to do with the "!"



Homework Equations


d = !(v + 0)t;



The Attempt at a Solution


In a problem with different numbers I was able to solve for t by dividing and ignoring the "!", then multiply by 2 for the answer.
.984/1.9= .518
.518 * 2 = 1.036 but this does not work.
 
Physics news on Phys.org
hi kkershaw

not too sure what you're trying to do - can you explain the whole problem...?
 
kkershaw said:

Homework Statement


I am solving for t using this equation: d = !(v + 0)t;
My d=.984 and v=1.9
I don't know what to do with the "!"

Are you sure it's not

d = |(v + 0)t| ?

expressing d as a scalar product of velocity (speed) and time?
 
TL;DR Summary: I came across this question from a Sri Lankan A-level textbook. Question - An ice cube with a length of 10 cm is immersed in water at 0 °C. An observer observes the ice cube from the water, and it seems to be 7.75 cm long. If the refractive index of water is 4/3, find the height of the ice cube immersed in the water. I could not understand how the apparent height of the ice cube in the water depends on the height of the ice cube immersed in the water. Does anyone have an...
Thread 'Variable mass system : water sprayed into a moving container'
Starting with the mass considerations #m(t)# is mass of water #M_{c}# mass of container and #M(t)# mass of total system $$M(t) = M_{C} + m(t)$$ $$\Rightarrow \frac{dM(t)}{dt} = \frac{dm(t)}{dt}$$ $$P_i = Mv + u \, dm$$ $$P_f = (M + dm)(v + dv)$$ $$\Delta P = M \, dv + (v - u) \, dm$$ $$F = \frac{dP}{dt} = M \frac{dv}{dt} + (v - u) \frac{dm}{dt}$$ $$F = u \frac{dm}{dt} = \rho A u^2$$ from conservation of momentum , the cannon recoils with the same force which it applies. $$\quad \frac{dm}{dt}...
Back
Top