Sarah N H

This page lists questions and answers that were posted by visitors named Sarah N H.

Questions

The following questions were asked by visitors named Sarah N H.

A guitar string 60 cm in length, with a diameter of 1.4 mm and a tension of 289 N, emits a note with a frequence of 147 Hz. Find the frequency in each of the followig situations: a)the tension isreduced to 196N b)a string of the same material, 45 cm long...

Sam is sitting in her fishing boat watching a trout swim below the surface. She guesses the apparent depth of the trout at 2.0m. She estimates that her eyes are about 1.0 m above the water's surface, and that the angle at which she's observing the trout i...

Cathy takes the bus home from work. In her hand she holds a 2 kg cake box, tied together with a string. As she ascends the steps into the bus,the box accelerates upward at a rate of 2.5m/s^2. what is the force exerted on the string? Fg=ma =2*9.8 =19.6N Fn...

according the graph sown, the net force acting on an object varies wth the object's displacement.calculate the work down by the force on the object at the various displacements listed below (i won't bother telling you since you don't have a graphy, but I...

its the second part of the question that I don't understand: according the graph shown, the net force acting on an object varies wth the object's displacement. Calculate the work down by the force on the object at the various displacements listed below (i...

PARTS C AND D ARE WHAT I'M HAVING TROUBLE WITH. a tobaggan of mass 20kg is dragged horizontally across snow by someone who exerts a force of 45N. the tobaggan travels 8m under the action of the force and has a final speed of 2.6 m/s. a)calculate the actua...

DRWLS: PLEASE SEE ADDITIONAL INFO AT THE BOTTOM its the second part of the question that I don't understand: according the graph shown, the net force acting on an object varies wth the object's displacement. Calculate the work down by the force on the obj...

the diagram shows a skateboarder starting a run from Position P (2.5m) at 2.6 m/s. The mass of the skateboarder system (boarde + board) = 74.5kg. Assume that frictional forces can be ignored. a)calculate the speed of the skateboarder at position a(1.5 m)...

Answers

The following answers were posted by visitors named Sarah N H.

thanks Bob. Can you please help me with question A as well?

Bob - thanks for the reply. I have figured out the angle of incidence to be 32.3 degrees, but do not know how to caluclate the depth as underwater heigh is given (the only heigh is 1 m above water which I don't think i useful)...can you please help me mor...

* I meant, NO underwater height is given

I figured out the angle to be 32 degrees but still don't know how to figure out the height...

Bob: your website, when I rearrange the formula, would be real depth = X/tani...What is the 'x" in my problem? DRWLS: I am solving for the actual depth, the apparent depth is given...do I still use your same formula? Thankyou both.

I have drawn them all, but just want to make sure that I should be dividing 2 metres into tan1 (which is 32, to give me a real depth of 3 metres. Can you please verify that?