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- Following a prolonged period of marketing activity, a chain of private health clinics has recently opened a number of clinics in towns across a part...(Solved)
Following a prolonged period of marketing activity, a chain of private health clinics has recently opened a number of clinics in towns across a part of the country it had not previously operated in. The organization now wants to know whether and to what extent potential customers are aware of them. Your agency has been awarded the contract to carry out this research. The client wants the survey conducted face-to-face but does not want to use any form of street intercept for the survey as this is not permitted within some of the towns where they have opened their new clinics.
a) Describe at least two sampling methods which could be used for this survey, outlining the advantages and disadvantages of each of the methods chosen.
b) Which sampling method would you recommend? Give reasons for your choice.
Date posted: May 13, 2021.
- Last year, a large retail company, with 5,000 employees in branches around the country launched its Well At Work initiative. Well At Work provides a...(Solved)
Last year, a large retail company, with 5,000 employees in branches around the country launched its Well At Work initiative. Well At Work provides a range of confidential services to improve staff morale and wellbeing. This range includes services such as free health checks, free financial advice and support to stop smoking. The company wants to find out how staff view these services, how useful they are, and if they have helped improve staff satisfaction. They have asked all employees to complete an online research questionnaire which contains the following questions.
The company would like to know which staff groups, according to grade and geographic area, are making most use of the services. The HR Director has asked to look at the completed questionnaires so she can get a feel for the results for each area and staff group. You realize she may be misled by or she may misinterpret the raw data.
a) Identify at least two issues which should be taken into account when comparing the raw data for the different groups, stating why these issues are important.
b) Describe at least two ways in which you might analyze the data in order to provide the company with the robust information they need. Giving reasons for the suggestions you make.
Date posted: May 13, 2021.
- Step Forward is a national initiative to provide support for young, unemployed people aged 16-
24. It brings together Government and voluntary sector organizations which offer...(Solved)
Step Forward is a national initiative to provide support for young, unemployed people aged 16-
24. It brings together Government and voluntary sector organizations which offer a wide range of services and support for clients, such as career coaching, skills training and work experience placements.
Every year, the Government provides funding for a national conference which brings together representatives of the organizations working together under the Step Forward banner. The aim of the conference is to share good practice and to promote innovative ways to support the young people who use the services. The organizers hope that this will help representatives take new ideas back to their own organizations and therefore help to improve the services provided across the country. To support this aim, the organizers provide a year-round conference website which allows access to information and presentations from the past three conferences. In addition, each conference includes an exhibition of companies and organizations which provide relevant goods and services.
This year’s conference is scheduled to take place in three months’ time. However, the organizers have been informed that there may not be Government funding beyond this year unless they can provide evidence that the event achieves its aim of helping to improve the services offered to young people to help them get into work. Therefore, they have decided to commission your agency to research the effectiveness of the conference. The results will be needed before the conference takes place.
You are a research executive and you have been asked to prepare a proposal for the conference research project. You are about to meet your manager to discuss your ideas for a suitable proposal.
a) Using the internet, what secondary research would you undertake to find out whether recommendations from previous conferences have been implemented by the organizations delivering the Step Forward initiative? Outline briefly how you would approach this task, giving reasons for your suggestions. You should highlight any relevant ethical issues which you would need to consider, and how you would address these when undertaking this task.
b) Devise an outline plan for a programme of primary research to address the organizers’ need to understand how effective the conference is in helping the Step Forward organizations to improve their services. In your plan include the research design, the sampling plan and the method(s) of data collection. Give reasons for each of the choices you make.
c) How could the conference itself be used to provide additional research? Identify at least one suitable approach which could be used to gather data at the event. Discuss the benefits and limitations of your chosen approach. You should highlight any ethical issues which you would need to consider when using your chosen approach, and how these could be addressed.
Date posted: May 13, 2021.
- Describe the Products of Vectors.(Solved)
Describe the Products of Vectors.
Date posted: May 12, 2021.
- Describe the components of a vector.(Solved)
Describe the components of a vector.
Date posted: May 12, 2021.
- Define Unit Vectors.(Solved)
Define Unit Vectors.
Date posted: May 12, 2021.
- Describe Derivatives and Integrals.(Solved)
Describe Derivatives and Integrals.
Date posted: May 12, 2021.
- Describe the Logarithmic Function.(Solved)
Describe the Logarithmic Function.
Date posted: May 12, 2021.
- Describe the Exponential Function.(Solved)
Describe the Exponential Function.
Date posted: May 12, 2021.
- A battery, an inductor and a resistor are connected together as shown in figure 6.5. The switch in
is closed at t = 0
(a) Find the...(Solved)
A battery, an inductor and a resistor are connected together as shown in figure 6.5. The switch in
is closed at t = 0
(a) Find the time constant of the circuit.
(b) Calculate the current in the circuit at t = 2.00 ms
Date posted: May 12, 2021.
- A current I is established in a RL circuit when the switch is closed at time t = 0, show that(Solved)
A current I is established in a RL circuit when the switch is closed at time t = 0, show that
Date posted: May 12, 2021.
- The current through a 0.1-H inductor is i(t)=10te-5tA. Find the
(a) Voltage across the inductor and
(b) The energy stored in it.(Solved)
The current through a 0.1-H inductor is i(t)=10te-5tA. Find the
(a) Voltage across the inductor and
(b) The energy stored in it.
Date posted: May 12, 2021.
- Differentiate between an inductor and inductance(Solved)
Differentiate between an inductor and inductance
Date posted: May 12, 2021.
- Figure 6.2 shows a rectangular loop of wire immersed in a nonuniform and varying magnetic
field B that is perpendicular to and directed into the page....(Solved)
Figure 6.2 shows a rectangular loop of wire immersed in a nonuniform and varying magnetic
field B that is perpendicular to and directed into the page. The field’s magnitude is given by
B=4t2x2 , with B in teslas, t in seconds, and x in metres. The loop width w = 2.0 m and length l
= 3.0 m. What are the magnitude and direction of the induced emf around the loop at t = 0.10 s?
Date posted: May 12, 2021.
- A coil consists of 200 turns of wire having a total resistance of 2.0 O. Each turn is a square of
side 18cm, and a uniform...(Solved)
A coil consists of 200 turns of wire having a total resistance of 2.0 Ω. Each turn is a square of
side 18cm, and a uniform magnetic field directed perpendicular to the plane of the coil is turned
on. If the field changes linearly from 0 to 0.50 T in 0.80 s, what is the magnitude of the induced
emf in the coil while the field is changing?
Date posted: May 12, 2021.
- State three ways of inducing an emf in a circuit(Solved)
State three ways of inducing an emf in a circuit
Date posted: May 12, 2021.
- What is a magnetic flux?(Solved)
What is a magnetic flux?
Date posted: May 12, 2021.
- A long, straight wire carries a current of 5.00 A. At one instant, a proton, 4.00 mm from the wire,
travels at 1.50 x103 m/s parallel...(Solved)
A long, straight wire carries a current of 5.00 A. At one instant, a proton, 4.00 mm from the wire,
travels at 1.50 x103 m/s parallel to the wire and in the same direction as the current (Fig.5.2).
(a) Find the magnitude and direction of the magnetic field created by the wire.
(b) Find the magnitude and direction of the magnetic force the wire’s magnetic field exerts on the proton.
Date posted: May 12, 2021.
- A long, straight wire of radius R carries a steady current I0 that is uniformly distributed through
the cross-section of the wire (Fig. 5.1). Using Ampere’s...(Solved)
A long, straight wire of radius R carries a steady current I0 that is uniformly distributed through
the cross-section of the wire (Fig. 5.1). Using Ampere’s law, calculate the magnetic field a
distance r from the center of the wire in the regions r > R and r < R .
Date posted: May 12, 2021.
- State Ampere’s Law.(Solved)
State Ampere’s Law.
Date posted: May 12, 2021.
- Two wires (Fig.4.5), each having a weight per unit length of 1.00 x 10-4 N/m, are parallel with
one directly above the other. Assume that the...(Solved)
Two wires (Fig.4.5), each having a weight per unit length of 1.00 x 10-4 N/m, are parallel with
one directly above the other. Assume that the wires carry currents that are equal in magnitude
and opposite in direction. The wires are 0.10 m apart, and the sum of the magnetic force and
gravitational force on the upper wire is zero. Find the current in the wires. (Neglect Earth’s
magnetic field)
Date posted: May 12, 2021.
- A wire carries a current of 22.0 A from West to East. Assume that at this location the magnetic
field of Earth is horizontal and directed...(Solved)
A wire carries a current of 22.0 A from West to East. Assume that at this location the magnetic
field of Earth is horizontal and directed from south to north and that it has a magnitude of
0.500 x 10-4 T.
(a) Find the magnitude and direction of the magnetic force on a 36.0-m length of wire.
(b) Calculate the gravitational force on the same length of wire if it’s made of copper and has a
cross-sectional area of 2.50 x 10-6 m2.
Date posted: May 12, 2021.
- Figure 4.4 shows an ion of mass m and charge q propelled with a speed v from source S into
a chamber in which a uniform...(Solved)
Figure 4.4 shows an ion of mass m and charge q propelled with a speed v from source S into
a chamber in which a uniform magnetic field B is perpendicular to the path of the ion. The
initially stationary ion from S is accelerated to the chamber by the electric field due to a
potential difference V.
Date posted: May 12, 2021.
- What magnetic field strength is necessary so that an electron moving with a speed of 5 x 105 m/s
travels in a circle of radius 1...(Solved)
What magnetic field strength is necessary so that an electron moving with a speed of 5 x 105 m/s
travels in a circle of radius 1 m?
Date posted: May 12, 2021.
- A proton moves at 8.00 x 106 m/s along the x-axis. It enters a region in which there is a magnetic
field of magnitude 2.50 T,...(Solved)
A proton moves at 8.00 x 106 m/s along the x-axis. It enters a region in which there is a magnetic
field of magnitude 2.50 T, directed at an angle of 60.0° with the x-axis and lying in the xy - plane
(Fig. 4.3). Find the initial magnitude and direction of the magnetic force on the proton.
Date posted: May 12, 2021.
- The Earth's magnetic field is about 50 µT northward. Find the velocity that an electron moving
westward would have so that the magnetic force balances gravity.(Solved)
The Earth's magnetic field is about 50 μT northward. Find the velocity that an electron moving
westward would have so that the magnetic force balances gravity.
Date posted: May 12, 2021.
- A +10 µC charge moves from left to right at a speed of 5 x 106 m/s. There is a 0.04 T magnetic
field toward one...(Solved)
A +10 μC charge moves from left to right at a speed of 5 x 106 m/s. There is a 0.04 T magnetic
field toward one o'clock, if the page were a clock. Find the magnetic force on the charge.
Date posted: May 12, 2021.
- Show that the energy stored in a capacitor is(Solved)
Show that the energy stored in a capacitor is
Date posted: May 12, 2021.
- Derive an expression for the potential difference across the capacitor during the discharging process.(Solved)
Derive an expression for the potential difference across the capacitor during the discharging process.
Date posted: May 12, 2021.
- Obtain an expression showing the relationship between current and time during the discharging process.(Solved)
Obtain an expression showing the relationship between current and time during the discharging process.
Date posted: May 12, 2021.