WITH Top10 AS
(SELECT TOP 5 VendorID, AVG(InvoiceTotal) AS AvgInvoiceFROM Invoices
GROUP BY VendorID
ORDER BY AvgInvoice DESC)
SELECT Invoices. VendorID, MAX(Invoices. InvoiceTotal) AS LargestInvoice
FROM Invoices JOIN
ON Invoices. VendorID = Top10.VendorID
GROUP BY Invoices. VendorID
ORDER BY LargestInvoice DESC;

1)When this query is executed, the result table will contain one row for:

a. each vendor
c. each invoice
b. each vendor in the Top10 table
d. each invoice in the Top10 table

2)When this query is executed, each row in the result table will show

a. he largest invoice amount related to that row
b. the average invoice amount related to that row
c. the largest invoice amount related to that row, but only if it’s larger than the average for all invoices
d. the largest invoice amount related to that row, but only if it’s larger then the average for all invoices related to that row

The percent efficiency of a machine can never be 100% (or greater), because in the real world some energy is always converted into a. heat b. work c. input force d. output force

How are calculation for velocity and speed different

Search coils and credit cards. one practical way to measure magnetic field strength uses a small, closely wound coil called a search coil. the coil is initially held with its plane perpendicular to a magnetic field. the coil is then either quickly rotated a quarter-turn about a diameter or quickly pulled out of the field. (a) derive the equation relating the total charge q that flows through a search coil to the magnetic-field magnitude b. the search coil has n turns, each with area a, and the flux through the coil is decreased from its initial maximum value to zero in a time ∆t. the resistance of the coil is r, and the total charge is q = i∆t, where i is the average current induced by the change in flux. (b) in a credit card reader, the magnetic strip on the back of a credit card is rapidly “swiped” past a coil within the reader. explain, using the same ideas that underlie the operation of a search coil, how the reader can decode the information stored in the pattern of magnetization on the strip. (c) is it necessary that the credit card be “swiped” through the reader at exactly the right speed? why or why not?