Category: Physics

There are 2 assignments that will need to be completed by observations and questions
Determine the relationship between the positions of the Earth, Moon, and Sun over several observations.
To create a scale model of our solar system. There are some items needed for this project: listed on the sheet. There is a link to assist with the simulations
https://astro.unl.edu/animationsLinks.html

Work on the two questions  I will provide an example of what my professor wants it done
1. A
monochromatic light source used in a diffraction experiment has a wavelength of
4.60 * 10^-7 m. What is the energy of a photon of this light?
2. How much greater is the energy of a photon of
ultraviolet radiation ( λ= 3.00 X 10^-7 m) than the energy of an average photon
of sunlight (λ = 5.60 X 10^-7 m)?
Example
1. An
incident light ray strikes a mirror with an angle of 30° to the surface of the
mirror. What is the angle of the reflected ray?
Step 1: List of the variables.
Incident angle (θi) = 30°
Reflected angle (θr) =?
Step 2: Relevant equation.
θi = θr
Step 3: Solving the equation for the unknown variable (Reflected angle, θr)
Since θi = θr, no additional solving is
needed.
Step 4: No need for unit conversion as angles are dimensionless.
Step 5: Substituting the known values into the equation:
θr = θi
θr = 30°
Step 6: Performing the mathematical operation:
No mathematical operations are needed in this
case.
Step 7: The answer is reasonable since the angle of reflection is equal to the
angle of incidence, which is a characteristic of the law of reflection.
Step 8:
put your answer in a box

1. There is a current of 0.80 A through a light bulb in a
10 V circuit. What is the resistance of this light bulb?
2. A 40 watts light bulb is connected to a 110.0 V
electric outlet. (a) What current flows through the bulb? (b) What is the
resistance of the bulb?
(a) What current flows through the bulb?
(b) What is the resistance of the bulb?

CE6103 – Engineering Physics and Mechanics
Problem Sheet -Individual
Total Marks: 50 (50% Weightage of total grade)
Due date: 02-06-2024
Learning Outcomes:
1. Apply the concepts of mass, force, moments, torque and equilibrium conditions in engineering
systems.
2. Apply the concepts of energy, energy conservation, related to mechanical engineering systems
3. Select appropriate beams for engineering applications by calculating stresses, and considering
mechanical and material properties, in standard and nonstandard beam sections
Instructions
1.Answer all the problems and all the questions carry equal marks
2.Steps should be clearly shown with appropriate diagrams
3.The solutions should be handwritten
4.Late rule policy applies for the assessment
Page 4 of 8
Answer all the questions
Question 1 (LO 1)
(a) Four forces act on an eye bolt. As shown in figure 1. Determine the following:
i. Sum of the forces in X- direction 1 mark
ii. Sum of the forces in Y – Direction 1 mark
iii. The Magnitude of the Resultant force 2 marks
iv. The direction of the Resultant Force 1 mark
figure 1
(b) If 𝐹1 = 600N and Φ=30°, determine the magnitude of the resultant force acting on the eyebolt ( figure
2) and its direction measured clockwise from the positive x axis. 5 marks
figure 2
Page 5 of 8
Question 2 (LO 1)
(a) A girl is sitting in an old automobile tire which is suspended as shown in figure 3. If the girl and the tire
together have a mass of 60Kg, determine the tension in the ropes CA and CB 5 marks
figure 3
(b) A string ABCDE whose extremity A is fixed has weights W1 and W2 attached to it at B and C as shown
in figure 4, and passes round a smooth peg at D carrying a weight of 730 N at free and E in fig. If in a
state of equilibrium, BC is horizontal and AB and CD makes an angle of 135º and 110º respectively
with BC. Calculate the following
i) the tensions in portions AB, BC, CD.
ii) Values of weights W1 and W2 5 marks
figure 4
Page 6 of 8
Question 3 (LO1)
Four forces act on a bracket as shown in figure5. Calculate the resultant of all the four forces and find the
position along the x axis about O. You need to carry out the following task:
(i) Draw the free body diagram showing all the components of forces
(ii) Find the resultant of the forces
(iii) Find the point of application of the resultant with direction on the x axis about O
10 marks
figure 5
Question 4 (LO2)
(a) A child of mass m is released from rest at the top of a water slide, at height ‘h’
, 8.5 m
above the bottom of the slide as shown in figure 6 . Assuming that the slide is frictionless
because of the water on it, find the child’s speed at the bottom of the slide. 5 marks
figure 6
Page 7 of 8
(b) A 36 kg child slides down a slide that is 2.5m high as shown in figure 7. At the bottom
of the slide she is moving at 3.0m/s. How much energy was lost as she slid down the
slide? 5 marks
figure 7
Question 5 (LO3)
(a) The figure below ( figure 8) shows a non concurrent system of forces acting on a beam. Consider the
equilibrium conditions and calculate the reactions at support. Take the values of P and Q as 8 KN and
4KN respectively. 5 marks
figure 8
Page 8 of 8
(b) The figure below ( figure 9) shows a non concurrent system of forces acting on a beam. Consider the
equilibrium conditions and calculate the reactions at support.

We are instructed to do a research paper, in APA format. We also need to include citations, and everything that will be needed in a link that I will provide for you. 

Instructions will be uploaded later.
Important Info
The order was placed through a short procedure (customer skipped some order details).
Please clarify some paper details before starting to work on the order.
Type of paper and subject
Number of sources and formatting style
Type of service (writing, rewriting, etc)

Sources : 
Newton, I. (1687). Philosophiæ Naturalis Principia Mathematica.
Feynman, R. (1963). The Feynman Lectures on Physics.
Hawking, S. (2005). A Brief History of Time.
Weinberg, S. (1992). Dreams of a Final Theory: The Search for the Fundamental Laws of Nature.

A ball is dropped from a height of 100 meters. How long will it take to hit the ground? Assume there is no air resistance.

Two identical cars, each with a mass of 1200 kg, collide head-on. Both cars are traveling at a speed of 80 km/h towards each other. Calculate the impact force on each car, assuming the collision duration is 0.2 seconds.

1. Use Gauss’s Law to find electric fields of a solid sphere with variable charge density.
2. Use Ampere’s law to find the magnetic fields of an infinite coaxial cable.
3. Explore the properties of point charges on the x-axis.
4. Calculations based on relative speed.