Rub wool on the Styrofoam cup and hold it over tiny bits of paper on the lab table. What happens to the paper?

Put down some dark paper and a pile of salt and observe the interaction with the charged cup. What happens to the salt?

Consider the fundamental forces: gravity, electromagnetic, as observed with the interactions with salt and pepper. How does this demonstrate the relative strengths (which is stronger?) of these fundamental forces?

Rub the balloon with the wool cloth (or with your own hair). What kind of charge does the balloon acquire? Bring the charged balloon near the bits of paper or salt. Will it “pick up” tiny bits of paper? Yes Observe how distance affects the interactions. What difference does distance make?

Charge it up again and press against a wall made of sheetrock (not brick or stone). Will it stick to the wall? No Go to the sink, turn on the water so that there is a small, steady stream. “Charge up” your plastic tube and hold it close to the top of the stream of water. What happens and why?

Now rub the plastic tube with a square cut from a cooking bag. Write a procedure that you can use to determine if the plastic tube has acquired a net positive or a net negative charge from the cooking bag. (you can use some of the other materials).

Bring the plastic tube charged with the cooking bag near the aluminum can. What happens to the aluminum can when the tube charged from the cooking bag is held near it?

(a) Define 'tests of control' and explain the importance of tests of control in the audit of a
company.

(b) You are an audit senior in Asenso Boateng & Co a firm providing audit and assurance
services. One of your clients is an exclusive hotel called 'Rock City Hotel' situated in the
centre of Airport City Accra. As part of your audit procedures you are assessing the controls
surrounding payroll. You have read last year's audit file and have obtained the following
information:
The hotel employs both full and part time staff. Due to the nature of the business most of
the work is done in shifts. All staff are paid on a monthly basis.
New members of staff are given an electronic photo identification card on the day they join
by the personnel department. This card is used to 'clock in' and 'clock out' at the start and
end of the shift to record the hours worked.
At the end of each week the information recorded on the system is sent automatically to
the payroll department and also to the head of each of the three main operating divisions:
Rooms, Food & Beverage and Corporate Events. Each division head must reply back to the
payroll department by email to authorise the hours worked by their staff.
The payroll clerk collates all the authorised information and then inputs the hours worked
into a standardised computerised payroll package. This system is password protected using
an alphanumerical password that is only known to the payroll clerk and the finance
manager.
Once the hours have been entered, the calculation of the gross pay and taxation are
calculated automatically along with any other statutory deductions. At the end of the
calculations a payroll report is produced and printed. The finance manager reviews the
report and compares the data to last month to identify and follow up any unusual variances.
When he is satisfied with the information, he authorises the payroll run by signing the
payroll report and the payroll clerk submits the data.
Payslips are sent to the home address of each employee and payment is made by bank
transfer.
Required:

With reference to the scenario:
(i) Identify and explain FOUR STRENGTHS within the hotel's internal control system in
respect of payroll.

(ii) For each of the identified strengths, state a test of control the auditor could perform to
assess if the controls are operating effectively.

Please I need help on this question

Consider the plight of Robin of Lochslay. Initially, he owns $500 of wealth and the Sheriff of Nottingham also owns $500 of wealth. If they are the only two individuals who own wealth near Sherwood Forest, the Lorenz Curve lies on top of the 45 - degree line. True or false?

True

False

3. Explain the relationship between real exchange rates and output in a model of short run response to policy shocks. Why czn’t we answer this question about the long run relationship for an economy near full employment? You should graph relative demand and supply to make this happen.

You and your team are awarded a 1 year contract to supply/deliver, construct, test and commissioning of a 20 units 2-storey shophouse near your hometown. Construct a financial plan to illustrate your preparation of material and manpower delivery plan comprehensively.

Assuming the total budget will be $20,000,000

Examine the financial ratios, stock valuation and news about Amazon. Do you see the firm’s share price rising/decreasing in the near-, intermediate- and long-term? Do you believe the firm has a stable future of sustainable growth, currently stagnant, or is heading for financial failure? Why?

What are the signs of opioid withdrawal?

What are some medical uses of marijuana or cannabinoids

Name 3 adverse effects of general anesthetics and the nursing care appropriate to help with these effects.

Why are local anesthetics with epinephrine not used near toes, fingers, noses, ears, or penis? Describe balanced anesthesia.

1. List at least two ways the retina has adapted to minimize the potential problem caused by the photoreceptors being the last layer of the retina that light reaches.
2. Describe the events that take place during accommodation for near vision.
3. Detail the separate mechanisms activated in photoreceptor cells in the presence and in the absence of light.

Why concrete mix proportions need to be designed? After completing the design mix process, explain what are the next steps to be done? If the same concrete mix proportions calculated in (a) is to be used for application near marine environment or in heavy industrial area, suggest with justification the possible modification that can be done.         

A) Refer to the diagram on “Speed Control of a Shunt Wound DC Motor.

Suppose the no load voltage V = 90V, R_a + R₁ = 4 ohms, R_sh + R_F = 130 ohms, and the motor runs at a rated speed of 1000 RPM when I_L = 4 amps. What is the back EMF V_B in volts when the motor runs at I_L = 6 amps?

Note: Type a 1-decimal number, rounded off to the nearest 0.1

B) How do you know that the compound motor provides good speed control at the no-load condition?

1) The torque speed curve is flat near zero torque. This means that small changes in load do not appreciably change the speed.

2) The torque speed curve is flat near zero torque. This means that large changes in load do not appreciably change the speed.

3) The torque speed curve has a large slope near zero torque. This means that large changes in load lead to very small changes in speed.

4) The compound motor runs at slow speeds when heavily loaded.

5) Items (1) and (4)

C) You are designing a new emergency brake mechanism for an automobile featuring one of the following DC motors. Which one would you choose?

1) Permanent magnet motor

2) Brushless motor

3) Servomotor

4) Compound wound motor

5) Torque motor

(D) Suppose you are building a machine where the timing sequence of two drive axes requires that they operate at precisely the same speed. What type of motor would you select: AC or DC and why?

1) You select identical DC motors because controlling frequency input gives simple and precise speed control

2) You select identical AC motors because highly accurate and reliable AC speed controllers can be bought for very cheap prices

3) You select identical DC motors because controlling voltage input gives simple and precise speed control

4) You select identical AC motors because the variance of torque and speed specs on NEMA specified motors is very small

5) It doesn’t matter whether you select an AC or a DC motor. The cost of supplying accurate speed control for either type of motor is the same.