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July 2025
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Physics 101 Mechanics Q&A Archive of July 9, 2025

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July 9 of 2025

4. A particle of mass 10 kg moving with velocity \( \left(\begin{array}{cc}2 & 1 \\ 3 & -1\end{array}\right) m s^{-1} \) collide with another particle of mass 5 kg moving with a velocity \( \left(\begin{array}{cc}1 & -2 \\ -3 & 4\end{array}\right) \mathrm{ms}^{-1} \). If they were moving in…

3. ( 20 points) Air \( (\mathrm{MW}=28.97) \) at 16.39 psia and \( 113^{\circ} \mathrm{F} \) flows upward through a 2.68 in diameter inclined duct at a rate of \( 2.3 \mathrm{ft}^{3} / \mathrm{s} \). The duct diameter is then reduced to 1.89 inches through a reducer. The pressure change across…

virtualvir ginia .instructure.com/courses/19279/quizzes/720987/take e - Harding Av... Home - Montgomer... Quizlet Live I Quizlet Duck Life 4 - Train Y... Rocket Spelling Elmwooc nimer Sesion 2025 - Cohort 2 ome odules rades 33 nnouncements yllabus Aastery Tracker Canva for…

A model of Toyota front suspension is shown in Figure 1a and a simplified model shown in Figure 1b. Use this information to answer Questions 1-8 \( x(0)=1 \mathrm{~mm} \) and \( \dot{x}(0)=-2 \mathrm{~mm} / \mathrm{s} \). Figure 1a Figure 1b 1. What is the equivalent stiffness \(…

PROBLEM 3 Three blocks of masses \( m_{1}, m_{2} \) and \( m 3 \) are connected as shown in the Figure. All the surfaces are frictionless and the string and the pulleys are light. Find the acceleration of \( \mathrm{m}_{1} \) PROBLEM 4 Find the constraint relation in the Figure.

Harding AV.. Home - Montgomer... Quizlet Live | Quizlet Duck Life 4 - Train Y... Rocket Spelling Elmwood Park Mo iewion 2025 - Cohort 2 Question 1 (33) Which is true about the shown diagram? \( \frac{M X}{L S}=\frac{X S}{M L} \) \( \frac{M X}{L S}=\frac{X S}{M L} \) \( \frac{L S}{L T}=\frac{M…

QUESTION ONE Define the following terms: [1 mark] [1 mark] a) Ultimate tensile stress. b) A hollow cast iron cylinder 4 m long, 300 mm outside diameter and thickness of b) Factor of safety. metal 50 mm is subjected to central load on top when standing straich. The stress produced is \( 75,000…

2.6 EXERCISES 1. A particle undergoes three successive displacements in a plane as follows; 4.0 metres southeast. 5.0 metres east and 6.0 metres in a direction \( 60^{\circ} \) North of East. Find the magnitude and direction of the resultant displacement. 2. Given that \( \vec{F}_{1}=3…

13. What mathematical principle states that voltage is generated when a conductor moves through a magnetic field? 1. Parshall's Law 2. Faraday's Law 3. Joule's Law 4. Ohm's Law

(10) What could cause insulation and electric motor windings to exhibit decreased resistance? 1. Vibrations 2. Moisture 3. Overheating 4. Overload

10. What could cause insulation and electric motor windings to exhibit decreased resistance? 1. Vibrations 2. Moisture 3. Overheating 4. Overload

Figure 2: Shaft subjected to concentrated loadings. Question 2 11 marks The hanger in Fig. 2 is made from three aluminium rods \( A B, C D \) and \( E F \). In addition, rigid beams \( A C \) and \( B D \) are attached as well as a spring at \( E \). Please note the following: - Rods \( A B \)…

13. What mathematical principle states that voltage is generated when a conductor moves through a magnetic field? 1. Parshall's Law 2. Faraday's Law 3. Joule's Law 4. Ohm's Law

10. What could cause insulation and electric motor windings to exhibit decreased resistance? 1. Vibrations 2. Moisture 3. Overheating 4. Overload

CQ (5 points) table below, only one among the proposed answers to each question is correct. the number of each \begin{tabular}{|l|l|l|l|} \hline \multirow{2}{*}{Questions} & \multicolumn{3}{|c|}{\multirow{2}{*}{}} \\ \hline The domain of definition of the function \( f \) given by & a &…

1. A car initially traveling at \( 10 \mathrm{~m} / \mathrm{s} \) accelerates at a constant rate of \( 2 \mathrm{~m} / \mathrm{s}^{2} \). Find the time it takes for the car to come to a stop and the distance it travels during this time. 2. A car accelerates at a constant rate of \( 2…

it to the Drop Box for the ENRT 108 Unit 4 Assignment. 1. In an RLC Series circuit: (1 point each) a. The voltage across the resistor is \( \square \) with the current. b. The voltage across the Inductor is with the current. c. The voltage across the Capacitor is with the current. Search

(c) What is the energy of a photon of light, with a wavelength of 515 nm ? [2] (d) Use the Rydberg equation to explain the electron transition (or give \( \mathrm{n}_{1} \) and \( \mathrm{n}_{2} \) ) that leads to the emission of the spectral line mentioned in (c) assuming the emission is of a…

22. Which is a limitation of using cutting tools to unplug a pipe? 1. The power drive unit must be located over the plugged line 4. They cannot clean lines with sharp bends 3. Rods are difficult to push over 100 feet 4. They are only effective on a few kinds of blockages

6. Which device measures the insulation resistance on motors, feeders, bus bar systems, grounds, and branch circuit wiring? T. Megger 2. Multimeter 3. Ammeter 4. Voltage tick

\[ \begin{array}{l} \text { LAP=S+S+S+S } \\ P=16 \mathrm{~cm}+16 \mathrm{~cm}+16 \mathrm{~cm}+16 \mathrm{~cm} \\ p=60 \mathrm{~cm} \\ 2 B=60 \mathrm{~cm} \\ \rho=6 \mathrm{~km} \\ \theta=120 \end{array} \]

a) Describe a clutch [3 marks] b) State three main types of clutches and give their applications [3 marks] c) A single plate clutch, with both sides effective, has outer and inner diameters 300 mm and 200 mm respectively. The maximum intensity of pressure at any point in the contact surface is…

2. Give a brief description of what the graph is showing as well as the general frend that this is aining to illustrate. b. Draw a trend line to best fit this data. c. Calculate the slope of the data as well as the \( y \) intercept of the data. Then write the equation of the line.

The figure gives an overhead view of the path taken by a 0.167 kg cue ball as it bounces from a rail of a pool table. The ball's initial speed is \( 2.32 \mathrm{~m} / \mathrm{s} \), and the angle \( \theta_{1} \) is \( 55.0^{\circ} \). The bounce reverses the \( y \) component of the ball's…

Question 3 ( 20 marks) a) Write an equation that expresses the first law of thermodynamics in terms of heat and work. What is the change in the internal energy, \( \Delta E \), when a system absorbs \( { }^{x} 105 \mathrm{~kJ} \) of heat from its surroundings while doing 29 kJ of work on the…

2.6 EXERCISES 1. A particle undergoes three successive displacements in a plane as follows; 4.0 metres southeast. 5.0 metres east and 6.0 metres in a direction \( 60^{\circ} \) North of East. Find the magnitude and direction of the resultant displacement. 2. Given that \( \vec{F}_{1}=3…

1. A unit of time sometimes used in microscopic physics is the shake. One 1.10 EXERCISES of seconds in a \( 10^{-8} \mathrm{sec} \). compare the number. shake is 10 year, which is more? 2. State the definition of the following terms and horio nine their SI units. i. Moment of Inertia ii.…

A radio station produces radio waves of waveleng ) calculate the frequency of the wave. ii) Period of the wave. 1) Number of useillations in 10s. u) state any asoumption taken.

Bidogy 1. List the reprobuctue party a flawer cand explain 2 What plansitation do we tave in orange, tomosoe, paw pail pride of babados 3 Where daes the digestion g carbatindrate shat struct math where does the digestion of protecn start-stomach Digestion of fat and ol- 5. What's thes insect…

1. A beam \( A B C \) supports a uniformly distributed load (UDL) of \( 12 \mathrm{kN} / \mathrm{m} \) and a point load of 2.4 kN as shown in the figure below. Draw the shear force diagram and bending moment diagram for the beam. ( 15 mks ) 2. Draw the shear force diagram and bending moment…

A straight wire of finite length carrying current I subtends an angle of \( 60^{\circ} \) at point \( P \) shown. The magnetic field at P is (1) \( \frac{\mu_{0} I}{2 \sqrt{3} \pi x} \) (2) \( \frac{\mu_{0} I}{2 \pi x} \) (3) \( \frac{\sqrt{3} \mu_{0} I}{2 \pi x} \) (4) \( \frac{\mu_{0} I}{3…

1. A beam \( A B C \) supports a uniformly distributed load (UDL) of \( 12 \mathrm{kN} / \mathrm{m} \) and a point load of 2.4 kN as shown in the figure below. Draw the shear force diagram and bending moment diagram for the beam. ( 15 mks ) 2. Draw the shear force diagram and bending moment…

Write short answers of the following in 2-3 lines of each on your answer sheet. (2*12) How did the results of the alpha particle scattering experiment contradict Thomson's model of the atom? ii. Why the impact parameter is considered an important parameter in understanding the dynamics of alpha…

Q.1. Write short answers of the following in 2-3 lines cach on your answer sheet. i. What is the physical reason for the fine structure of atomic spectra? ii. Explain the difference between Orbit and Orbital?. iii. What do you mean by space quantization? iv. Explain the difference between…

A. Zero C. Equal to its initial horizontal componem B. Equal to its initial vertical component D. Maximum Q. 8 The kinetic energy of a projectile at its maximum height is \( 25 \% \) of its initial KE. The launch angle is: A. \( 30^{\circ} \) C. \( 45^{\circ} \) B. \( 60^{\circ} \) D. \(…

5. Calculate the centre of mass of a non-uniform rod whose mass per unit length varies as \( \rho=\rho_{o} \frac{x^{2}}{L} \), where \( \rho_{o} \) is a constant, \( L \) is the length of the rod and \( x \) is the distance of any point on the rod measured from one end. 6. Find an expression…

7 A constant voltage of \( 50-\mathrm{V} \) is maintained between the points A and B of the circuit shown in the figure. The current through the branch CD of the circuit is : (1) 3.0 A (3) 2.0 A

A \( 510 \mu \mathrm{~F} \) capacitor that is intially uncharged is connected in series with a \( 750 \mathrm{k} \Omega \) resistor and and enf 3 ource with \( \mathcal{E}=245 \mathrm{~V} \) negingite internal resistance.

Write down the compound from the following reactions. - \( 2 \mathrm{H}_{2}+\mathrm{O}_{2} \rightarrow \) \( \qquad \) - \( 2 \mathrm{H}_{2}+\mathrm{Cl}_{2} \rightarrow \) \( \qquad \) - \( \mathrm{Zn}+\mathrm{S} \rightarrow \) \( \qquad \) DOC. No.: ACA-WI-03(02)A; Rev. No.: 03; Date:…

Vertically polarized light of intensity \( 0.24 \mathrm{~W} / \mathrm{m}^{2} \) strikes a polarizing filter with its axis tilted \( 30^{\circ} \) clockwise from vertical. What is the intensity of the transmitted light? \( 50 \mathrm{~W} / \mathrm{m}^{2} \) \( 75 \mathrm{~W} / \mathrm{m}^{2}…

17) A company produces three types of widgets: Type A, Type B and Type C. The production cost of a widget depends on two independent random variables: machine efficiency \( (M) \) and raw material \( (Q) \). The machine efficiency \( M \sim \operatorname{Uniform}\{1,2,3\} \), where \( M=1 \)…

Please help me answer this word problem and all of its questions. Thank you

A straight wire of finite length carrying current I subtends an angle of \( 60^{\circ} \) at point shown. The magnetic field at P is (1) \( \frac{\mu_{0} I}{2 \sqrt{3} \pi x} \) (2) \( \frac{\mu_{0} I}{2 \pi x} \) (3) \( \frac{\sqrt{3} \mu_{0} I}{2 \pi x} \) (4) \( \frac{\mu_{0} I}{3 \sqrt{3}…

Example 11: A Bicycle Trip A bicyclist maintains a constant velocity on the outgoing leg of a trip, zero velocity while stopped, and another constant velocity on the way back. Figure 2.19 shows the corresponding position-time graph. Using the time and position intervals indicated in the…

Please help me answer all the questions to this problem, Thank you!

Please help me answer this problem in GRESA format and help me draw a free body diagram. Thank you!

A Position veltor of a particle is given as \( \vec{r}(t)=(x, t) ; \) \[ \begin{array}{l} \vec{r}(t)=(40,5) i \\ \vec{r}_{2}(t)=(85,9) i \end{array} \] What is the average velocity

Example 11: A Bicycle Trip A bicyclist maintains a constant velocity on the outgoing leg of a trip, zero velocity while stopped, and another constant velocity on the way back. Figure 2.19 shows the corresponding position-time graph. Using the time and position intervals indicated in the…

Asapie: \( \qquad \) Triete: Chemistry Worksheet \( \qquad \) 5 and \( \qquad \) 1. What we the throe havel, teppece of meterent? 7 ypes of Mixtures 3. What me theterogeneous milturest Gove shree exumple. aregar is deeconised as berig". \( \qquad \) 1. What no meant by the tern "collilie" - \(…

Calculate the therenin resistance across the terminal \( A B \) for the following circuit.

11 b. Find specific thrust and SFC of a simple turbojet engine, having the following component performance at which the cruise speed and altitude are \( 270 \mathrm{~m} / \mathrm{s} \) and 5000 m . Select ambient condition from the gas table C. V of fuel is 43,100 13 \( \mathrm{kJ} /…

4. (a) A system consists of particles of masses 5,2 and 3 grams located at \( (1,0,-1),(1,2,1) \) and \( (1,1,-3) \), respectively. Find the position of centre of mass of the system of particles. (b) Locate the centre of mass of a system of particles of masses \( m_{1}=1 \mathrm{~kg} ; m_{2}=2…

https://bit.ly/APEdexcel (c) Calcium bromide is an ionic compound. The table shows the formulae and melting points of caffeine and 任 calcium bromide. \begin{tabular}{|l|c|c|} \hline \multicolumn{1}{|c|}{ Name } & Formula & Melting point in \( { }^{\circ} \mathrm{C} \) \\ \hline caffeine & \(…

Which graphs represent an object that is slowing down? (1) (3) (2) (4) 2 and 3 1 and 4 1 and 3 1 and 2 3 and 4 2 and 4

MUKUBA UNIVERSITY PHYSICS DEPARTMENT PHY 250: CLASSICAL MECHANICS AND SPECIAL RELATIVITY-2024/2025 TUTORIAL SHEET 4: KINEMATICS AND DYNAMICS OF A RIGID BODY; GRAVITATION 1. (a) Consider a point mass \( m \) with momentum \( \vec{p} \) rotating at a distance \( r \) about an axis. Starting from…

A uniform E-field of magnitude E and directed horizontally fills a region of space. Points A through D are all inside the uniform field and form a rectangle with horizontal side d as shown. Two particles, 1 and 2 , with equal masses and charges \( q_{1}=+Q \) and \( q_{2}=+2 Q \) are placed in…

(v) (A) FIGURE 024.6 FIGURE Q24.7 7. What is the current direction in the wire of Figure Q24.7?

1. (a.) A particle moves so that its position vector is given by \( r=\cos 4 \beta t i+\sin 4 \beta t j \), where \( \beta \) is a constant. Show that: (i.) the velocity \( v \) of the particle is orthogonal to \( r \). (ii.) the accelaration \( a \) is directed toward the origin and has…

A particle, moving with simple harmonic motion, performs 10 complete oscillations per minute and its speed, when at a distance of 80 mm from the centre of oscillation is \( 3 / 5 \) of the maximum speed. Find the amplitude, the maximum acceleration and the speed of the particle, when it is 60…

8. Arc Length. When a wheel of radius b rolls around the outside of a circle of radius \( a \), a point on the wheel traces a curve called an epicycloid: \[ \begin{array}{ll} x=(a+b) \cos (t)-b \cos \left(\frac{a+b}{b} t\right) & \\ y=(a+b) \sin (t)-b \sin \left(\frac{a+b}{b} t\right) & 0 \leq…

Example 4.2. A point moves with simple harmonic motion. When this point is 0.75 metre from the mid path, its velocity is \( 11 \mathrm{~m} / \mathrm{s} \) and when 2 metres from the centre of its path its velocity is \( 3 \mathrm{~m} / \mathrm{s} \). Find its angular velocity, periodic time and…

The width of one of the 2 slits in YDSE is 4 times of other slits then the ratio of maximum to minimum a) \( 1: 1 \) b) \( 4: 1 \) c) \( 9: 1 \) d) \( 16: 1 \)

(v) (A) FIGURE 024.6 FIGURE Q24.7 7. What is the current direction in the wire of Figure Q24.7?

4. A factory D as shown in figure below conveys water from a closed tank through a pipe with 150 mm diameter at a rate of \( 0.1 \mathrm{~m}^{3} / \mathrm{s} \). Given that kinematic viscosity of water, \( u \) is \( 0.113 \times 10^{-5} \mathrm{~m}^{2} / \mathrm{s} \), pipe friction factor, \(…

A rabbit runs across a parking lot on which a set of coordinate axes has, strangely enough, been drawn. The coordinates (meters) of the rabbit's position as functions of time \( t \) (seconds) are given by and \[ \begin{array}{l} x=-0.31 t^{2}+7.2 t+28 \\ y=0.22 t^{2}-9.1…

4. A factory D as shown in figure below conveys water from a closed tank through a pipe with 150 mm diameter at a rate of \( 0.1 \mathrm{~m}^{3} / \mathrm{s} \). Given that kinematic viscosity of water, \( u \) is \( 0.113 \times 10^{-5} \mathrm{~m}^{2} / \mathrm{s} \), pipe friction factor, \(…

4. A factory \( D \) as shown in figure below conveys water from a closed tank through a pipe with 150 mm diameter at a rate of \( 0.1 \mathrm{~m}^{3} / \mathrm{s} \). Given that kinematic viscosity of water, \( u \) is \( 0.113 \times 10^{-5} \mathrm{~m}^{2} / \mathrm{s} \), pipe friction…

19. A particle moves so that its position vector is given by \( r=\cos 4 \beta t i+\sin 4 \beta t j \), where \( \beta \) is a constant Show that: i) the velocity \( v \) of the particle is orthogonal to \( r \).

Please help me answer this word problem and all of its questions. Thank you

Please help me answer all the questions to this problem, Thank you!

Please help me answer this problem in GRESA format and help me draw a free body diagram. Thank you!

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