Search results

Anyone help me with this question please ? :) Write balanced ionic equations for the following: a) zinc is placed in a copper sulfate solution. b) lead is added to a solution containing Ag+ ions. c) iron is placed in a solution containing Na+ and Pb2+ ions.

Ah ! Thanks :) Silly mistake on my half.

An square ammeter coil has 80 turns of wire each of area 16.0cm^2. It is pivoted in a radial magnetic field of intensity 0.25T. a) Calculate the magnitude of toque acting on the coil when 60mA flows through it. My Working: Torque = nBIACosθ = 80 x 0.25 x 0.06 x (0.16)^2 = 0.03072...

An electricity substation delivers a current of 10A at a voltage of 6kV to an office complex. The office complex uses a transformer to provide a current of 230 A at a voltage of 240 V. (a) Explain why AC is preferable to DC as an input current for transformers. (2 marks) AC is more...

Question 21 (5 marks) (a) Explain the relationship between the current in the primary coil and the current in the secondary coil of an ideal step-down transformer in relation to the conservation of energy. (3 marks) The Principal of Conservation of Energy states that energy cannot be...

A square coil of PQRS with sides 0.05m and 250 coils carries 1.6A and lies in a 0.4T magenetic field directed from left to right. The plane of the coil is parallel to the field with PQ perpendicular to the field. a) Calculate the magnitude of the force on side PQ. b) Calculate the magnitude...

Could someone help me with these, any help would be greatly appreciated. :)

I did mine on PLA. So I dont know if I can help. But I got most of my information from the Resource section of BOS. I recommend you give that a go if you already haven't. I know a member 'P!xel' that did his assignment on PHB. Try get in contact with him. :)

Thanks dude :)

When two glucose units join together they form sucrose, commonly referred to as table sugar, which is a ___________. Polyamides can be formed from either one or two different monons but these monomers must have the functional groups: __________ and amine at the end. Proteins such as wool...

It's also in the Dot Point book, thanks :)

A 5.0cm square coil with 150turns of wire is in a magnetic field of intensity 0.25T. The plane of the coil makes an angle of 30 degrees with the magnetic field. The coil carries a current of 3.0 A. a) Calculate the magnitude of the force acting on each side of the coil. I've done the...

Differentiate x√x Thanks. :)

1.A projectile has a time of flight of 7.5 s and a range of 1200m. Calculate: a) its horizontal velocity Δx = u(x) x t 1200=7.5u u(x) = 160m/s b) its maximum height c) the velocity with which it is projected 2. A cannon ball is fired at 80ms-1 at an angle of 45 degrees to the...

Oh Cool, Thanks for your time dude! :)

A projectile is fired horizontally at 150ms-1 from the top of a 196 m high cliff. Calculate: a) its time of flight b) its range c) its velocity on hitting the ground Thanks for any help guys ! :) Really appreciated.

Thats the same question I'm stuck with, got part a), which was easy. But I cant seem to get part b). Anyone help ? :)

Any one happen to be studying 'Emma' by Jane Austen by any chance ?

The storyline isnt too bad, its just getting through it and staying awake which was my biggest problem. If i did read it, i think i wouldn't mind it. But overall its not something I'd want to do again. :)