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Physics 101 Mechanics
May 2023
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Physics 101 Mechanics
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May 29, 2023
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May 29 of 2023
An aeroplane of 4Ć10^4 kg mass is designed with the line of thrust 8Ć10^(-1) m above the line of drag. In routine flight the drag is 15.2 kN, and the centre of pressure on the mainplane is 200 mm behind the centre of mass. If the centre of pressure on the tailplane is 12 m behind the centre ofā¦
Use the following half-life graph to answer the question: A graph titled half-life graph of a radioactive isotope is shown with mass remaining on the y axis from 0 to 60 grams and time on the x axis from 0 to 6 minutes. A curve connects the points 0, 50 and 1, 25 and 2, 12.5 and 3, 6.25 andā¦
Which of the following were used as evidence for the existence of the electron? Particles were traveling from the cathode towards the anode. The particles were deflected towards a negative charge. The same behavior was observed, no matter what metal was used for the cathode.
An aeroplane of rĆ10^4 kg mass is designed with the line of thrust sĆ10^(-1) m above the line of drag. In routine flight the drag is 15.2 kN, and the centre of pressure on the mainplane is 200 mm behind the centre of mass. If the centre of pressure on the tailplane is 12 m behind the centre ofā¦
Which of the following supports the sea of background radiation phenomenon of the Big Bang Theory? Detection of radio noise Doppler shifts Nucleosynthesis of hydrogen The speed of light
A small flashlight bulb provides a resistance of 6.0 Ī© (Ohms) to the 400. mA current that runs through it. Determine the voltage of the battery in the flashlight. 2.4 V 4.6 V 6.4 V 15 V
A block of copper with mass 0.600 kg is heated to 400. degrees Celsius from 260. degrees Celsius. The specific heat capacity of copper is 387 J/ (kgĀ°C). The heat absorbed by the copper block is
If the threshold frequency for a photoemissive surface is 3.95 E 14 Hz, what is the work function for the surface? 1.25 eV 1.64 eV 1.89 eV 2.12 eV
The following graph is the heating curve for a 1.25-kg sample of a substance. The heating curve for a sample is shown with temperature on the y-axis from 0 to 350 degrees Celsius and heat added on the x axis from 0 to 1200 Joules. Five segments connect points from 0, 0 to 200, 50 to 400,ā¦
Consider the following diagram. Diagram showing a thin lens placed at the midpoint of a horizontal axis with a vertical axis running through its center. On either side of the lens, four dots are evenly spaced, two on each side. Between the lens and the first dot on the left, an upward facingā¦
Use the following half-life graph to answer the question: A graph titled half-life graph of a radioactive isotope is shown with mass remaining on the y axis from 0 to 60 grams and time on the x axis from 0 to 6 minutes. A curve connects the points 0, 50 and 1, 25 and 2, 12.5 and 3, 6.25 andā¦
4 A bag of cement whose weight \( F_{g} \) hangs in equilibrium from three wires as shown below. Two of the wires make angles \( \theta_{1} \) and \( \theta_{2} \) with the horizontal. Assuming the system is in equilibrium, show that the tension in the left-hand wire is (8) \[ T_{1}=\frac{F_{g}ā¦
Which two frequencies will produce a 5-Hz beat frequency if played simultaneously? 100 Hz and 500 Hz 243 Hz and 248 Hz 343 Hz and 393 Hz 561.0 Hz and 561.5 Hz
Study the following diagram for a thin lens. Diagram showing a thin lens placed at the midpoint of a horizontal axis with a vertical axis running through its center. On either side of the lens, four dots are evenly spaced, two on each side. Between the two dots on the left, and upward facingā¦
A dust particle with a charge of 3.2 Eā7 C is located near a dust cloth carrying a charge of +6.7 Eā7 C. If the force acting on the dust particle from the cloth is 4.8 Eā4 N, what is the distance between the particle and the cloth?
A red light is made to pass through two slits that are 1.60 Eā3 m apart. On a screen 5.00 m behind the slits, an interference pattern appears, with bands of light separated by 2.20 Eā3 m. What is the wavelength of the light?
In this project assignment, a billboard will be placed on a platform built on the ground. It has a schematic view as given below. 1. The wind force acts on the billboard (a) and (b), the weight of the billboard (c) 2. The billboard will be placed on the pole indicated with number 2 and itsā¦
Questions 19-20 Two blocks of masses m and 2m are connected by a very light flexible cord that runs without slipping over a pulley of mass m. The pulley is a solid uniform disk and is supported by a hook connected to the ceiling. The pulley rotates about its axle without friction. (The momentā¦
energy levels for the states \( \mathrm{n}=1,2 \), and 3 . Ans: \( 9.2 \mathrm{eV}, 37.7 \mathrm{eV}, 84.8 \mathrm{eV} \) 4 A \( 0.50 \mathrm{~kg} \) baseball is confined between two rigid walls of a stadium that can be modeled as a "box" of length \( 100 \mathrm{~m} \). Calculate the minimumā¦
Please explain.
A Dircctions form an evaluative statement for every given toxt and \( |a b c| \) it whether positive or negative depending on the focus of the evaluation. See the example bolow.
please explain
1- What ic the total acceleration of the 2 runners completing a 1000 meter. dash SE direction, the 1st runner finished th race in 1.3 hourc while the other one stopped in a rate of \( 59 \mathrm{~m} / \mathrm{s} 2 \) their total time is 2.32 hours?
QUESTION 2 PLANT ORGAN: 32 MARKS 2.1. Sludy the diagram below to answer the questions that follow. 2.1.1. Provide a suitable caption for the diagram.
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1. Define intangibility in hospitality service.
An ice figure skater starts out spinning at 0.89 revolutions per second with her arms outstretched. She wears lightly weighted bracelets to enhance the pin-up effect when she pulls her arms in. Where does this added energy come from? a) The additional energy comes from the friction. b) Theā¦
classical mechanics questionļ¼Hamilton-Jacobi eqļ¼
2. A "quark" (mass \( =m_{p} / 3 \) ) is confined in a cubical box with sides of length 2 fermis \( =2 \times 10^{-15} \mathrm{~m} \). Find the excitation energy from the ground state to the first excited state in \( \mathrm{MeV} \cdot\left(m_{p}=938 \mathrm{MeV} / \mathrm{c}^{2}\right) \).
3. An artist wearing spiked shoes pushes two crates across her frictionless horizontal studio floor. (See Figure 5.26.) If she exerts a horizontal \( 36 \mathrm{~N} \) force on the smaller crate, then the smaller crate exerts a force problem 3 . on the larger crate that is closest to A. \( 36ā¦
Start your trial now! First week only \( \$ 4.99 \) ! A projectile is fired at an initial slope of 4 vertical to 3 horizontal. It reached the maximum height \( 8 \mathrm{~m} \) away from the origin and hits the ground that is \( 2 \mathrm{~m} \) bellow the origin. 7.1. Calculate the theā¦
Two pure elements (R= 10 ohms, C=100uF) are in parallel. Applied voltage is V=150cos(5000t-30)V. Find the total current.
the radius a of a circle inscrible by an isosceles triangle whose side are A,B and C is given by. a(S_A)(S_B)(S_C)/S)1/2
a solid sphere , a solid cylinder and a hollow cylinder (a tube), all of the same mass m and the same outer radius R , are released from rest at the top of an incline and start rolling without sliding, in which order do they arrive at the bottom of the incline ?
water flows under the sluice shown in the image below. determine the estimated discharge per unit channel width assuming a contraction coefficient of 0.61.
5) Hot body radiates yellow radiation, its wavelength \( =4760^{\circ} \mathrm{A} \), what is the temperature of the body ? and what the amount of energy througt the unit of time, if the total surface area is \( 0.022 \mathrm{~m}^{2} \) ?
2) The fundamental vibrational frequency of the \( \mathrm{H}_{2} \) molecule is \( 4200 \mathrm{~cm}^{-1} \). Calculate the energy level spacing and the ZPE, in \( \mathrm{J} \) and in \( \mathrm{kJ} / \mathrm{mol} \). \[ \begin{array}{l} \mathrm{h}=1.05 \times 10^{-34} \mathrm{~J} \cdotā¦
4. Define principal moment of inertia. Determine the moment of inertia \( \mathrm{I}_{u}, \mathrm{I}_{v} \) and the product of inertia \( \mathrm{I}_{u v} \) for the beam's cross-sectional area. Take \( q=45^{\circ} \). 15
In a double-acting, 8-cylinder, 2-stroke cycle, compression ignition engine, the diameter of the cylinder is 700-mm, stroke is 1350-mm and the piston rod diameter is 250-mm. when running at 108 rpm, the indicated mean effective pressure above and below the piston are 5.80 bar and 4.90ā¦
11. Lis apparent werght in a liquid of densey 500 \( \operatorname{kgm}^{-3} \) 2) A matel qube of sije sides \( 2 \mathrm{~cm} \) weigh \( 0.56 \mathrm{~N} \) in air Colculatle a) its apparant weight when immeresed in whale Spirit of densty \( 0.85 \mathrm{gem}^{-3} \) b) The density of theā¦
10) Observe the temperatures of water and wax at different situations and answer the following : \begin{tabular}{|c|c|c|c|c|c|} \hline \multirow{2}{*}{ Substance } & \multicolumn{5}{|c|}{ Situations } \\ \cline { 2 - 6 } & 1 & 2 & 3 & 4 & 5 \\ \hline Water & \( 75^{\circ} \mathrm{C} \) & \(ā¦
T0, the situation shown in fig \( 4-7 \), find the values of FT, and \( F_{2} \) the objeots weegnt is \( 600 \mathrm{~N} \)
the following coplanar forces pult on a ring \( 200 \mathrm{~N} \) at \( 30.0^{\circ}, 500 \mathrm{~N} \) at \( 80.0,300 \mathrm{Nat2y0} \), and an unknown form. find the magnttude and direction of the unknown force if the ring is to be in equilibrium
The compression ratio of a spark-ignition engine is 8 to 1, the indicated engine efficiency is 80%, and the mechanical efficiency is 76% when 20% excess air is used. Determine the brake thermal efficiency.
The sucrose solution at 294.3 Ā°K is sent at the rate of 0.015 m3/s from a pipe to the large closed bioreactor by the help of a pump. The bioreactor is located at 2.3-m below the inlet point. The line from the pipe tank to the pump is 45-m and contains two 45Ā° elbow and a wide open globe valve.ā¦
Look at image
A Newtonian fluid flows down an inclined plane surface at an angle of Īø to the horizontal in steady-state laminar flow. Liquid layer has a thickness Z and the maximum velocity of the free surface. Imagine that a shell momentum balance is used. (Assume that the convective momentum andā¦
please explain
please explain
please explain
1) Air entering a steady-state compressor at 101 kPa and 298 K reaches 808 kPa adiabatically. is compressed by a process. The efficiency of the process is 87%. For this process, the work lost and the work required Calculate the minimum work. The ambient temperature is 293 K. Assume that the airā¦
please explain
please explain
3. In an hydraulic lift, the diameters of the pistons are \( 5.00 \mathrm{~cm} \) and \( 20.0 \mathrm{~cm} \). A car weighing \( 10.0 \mathrm{kN} \) is to be lifted by the force of the large piston. a) What force must be applied to the small piston? b) When the small piston is pushed by \( 10.0ā¦
please explain
A cylindrical trank has a raditof 1.85m .when filled to a height of 3.25m, it holds 14300 kg of a liquid industrial solvent. what is the density
please explain
please explain
- The Power Ulp' up to a 3 d induction maso in Go ker The stator coses total \( 1 \mathrm{kw} \). Find the tatal mech. Poror deroloped and boro eV-losets. if ship \( =3 \%[57 \cdot 2 \mathrm{~km}, 590 \mathrm{~W}] \)
I need to use dynamics to work this out but have no idea how to approach it
The pendulum is modeled as a rod of length I and uniformly distributed mass m. The pendulum pivot is a horizontal distance A from the vertical spin axis. Let w represent the angular rate of the system about vertical and let represent the pendulum angle. (theta is zero when the pendulum hangsā¦
(601414) \{Friction, Internal Work and Heat\} Consider the mass-on-a-spring system as shown in the figure below. The spring has a spring constant of 773 \( \mathrm{N} / \mathrm{m} \), and the block has a mass of \( 1.65 \mathrm{~kg} \). There is a constant force of kinetic fricticn betiveen theā¦
Question 5 \( (1 \) points) (342509) (Gravitational Potential Energy) A 100-g toy car moves along a curved frictionless track. At first, the car runs along a flat horizontal segment with an initial velocity of \( 2.98 \mathrm{~m} / \mathrm{s} \). The car then runs up the frictionless slope,ā¦
Question 9 ( 1 points) (117539) \{Spring Potential Energy\} Consider a mass-spring system. The spring has a spring constant of \( 1.54 \mathrm{e}+3 \mathrm{~N} / \mathrm{m} \). On the end of the spring is a mass of \( 1.20 \mathrm{~kg} \). At the moment that the block is at the systemisā¦
Consider what you have learned about the design of this engine and try to come up with examples (as many as you can ā be creative!) of how each of the following types of engineers have been involved (directly or peripherally) in the design and manufacturing of this engine. Consult chapterā¦
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Calculate the truss analysis for the members that are lined in blue. Using method of joints.
SCIENCE 9 Unit 4, Module 1 Activity 5 Conservation of Momentum Direction: Solve the following problems systematically. 1. A \( 1600-\mathrm{kg} \) car is moving at \( 35 \mathrm{~m} / \mathrm{s} \) northward. A cement delivery truck with a mass of \( 2500 \mathrm{~kg} \) moving at \( 20ā¦
\( \begin{array}{l}y^{\prime \prime \prime}-3 y^{\prime \prime}+4 y=4 e^{x}-18 e^{-x} \\ y^{\prime \prime \prime}-3 y^{\prime \prime}+4 y=0 \\ m^{3}-3 m^{2}+4=0 \\ m^{2}-4 m+4=0 \\ (m-2)(m-2)=0\end{array} \)
5. The Sun of the with the vertical summer direction at angle noon time during a solstice from place to place varies.
On a snowy day, Max (mass \( =15 \mathrm{~kg} \) ) pulls his little sister Maya in a sled (combined mass \( =20 \mathrm{~kg} \) ) through the slippery snow. Max pulls on the sled with \( 12 \mathrm{~N} \) of force, directed at an angle of \( 15^{\circ} \) above the ground. When he comes to aā¦
When a figure skater makes a jump, he increases his rotation speed by pulling together his arms and legs. This reduces his rotational inertia causing him to spin faster. If the initial spin rate of a figure skater is 1RPM and he decreases his rotational inertia by half during the spin, whatā¦
4. Si los mĆ³viles A y B se encuentran en persecuciĆ³n y se des. plazan con MRU, calcula la distancia recorrida por \( B \) hasta el alcance. a) \( 158 \mathrm{~m} \) b) \( 160 \mathrm{~m} \) c) \( 162 \mathrm{~m} \) d) \( 159 \mathrm{~m} \) e) \( 161 \mathrm{~m} \)
Part A A delivery company has unloaded a \( 30 \mathrm{~kg} \) crate in your driveway. The coefficient of static friction between the crate and the driveway surface is \( \mu_{\mathrm{s}}=0.40 \). The coefficient of kinetic friction is \( \mu_{\mathrm{k}}=0.30 \). In order to move the crate,ā¦
26: Inductance is the physical phenomenon that explains how a time varying magnetic field causes an electric current in a wire. Explain how this concept is important to the design of the engineās ignition system. (i.e. How is the spark created?)
87. How far should you hold a \( 2.1 \mathrm{~cm} \)-focal length magnifying glass from an object to obtain a magnification of \( 10 \times \) ? Assume you place your eye \( 5.0 \mathrm{~cm} \) from the magnifying glass.
If you mix 1 kg of water at 95ā°C with 1 kg of ice at -5ā°C, what temperature will the mixture have? Is there enough heat to melt all the ice completely? Consider the specific heat of ice is 0.5 cal/(g ā°C), the fusion heat of ice is 90 cal/g and the specific heat of water is 1 cal/(g ā°C)
An acrylic beaker (with a coefficient of linear expansion of 6.8x10^-5 ā°C^-1 ) is filled wuth mercury at 25ā°C, thus having a capacity of 500 mL. It is then cooled down to 15ā°C. Calculate the mass of mercury, measured at 15ā°C, that must be added to make the beaker completely full. Consider theā¦
Learning the Skill: Describing the phenomenon (A) 1. Teacher \( A \) and \( B \) are scheduled to have a class at \( 2: 00 \mathrm{pm} \) until \( 3: 30 \mathrm{pm} \) in the aftemoon. Both came to class on time however, according to the guard on duty, Teacher \( A \) finished the class at \(ā¦
A circular tire of 1.2 m in diameter must be attached to a steel rim of the same diameter. In order to be able to adjust it, you want to heat up the tire until its radius is 5 mm greater than that of the rim. Knowing that the ambient temperature is 20ā°C and its coefficient of linear expansionā¦
A gold rod of uniform density and constant cross sectional area oscillates like a pendulum hung from one end. It has a period of 0.9 s at a certain temperature. If the coefficient of linear expansion of gold is 14.2x10^-6 determine the increase in tenperature that must be given to the rod soā¦
Find the deviation of the direction relative to the forward direction of the resultant force that these engines exert on the rocket
Inertia is the physics concept that basically explains the strength of the tendency of a rotating object to stay in motion. The greater the inertia, the harder it is to change the motion. This is an important concept in the design of the flywheel. Explain how the inertia of the flywheel isā¦
31. Some telephoto cameras use a mirror rather than a lens. What radius of curvature mirror is needed to replace a \( 800 \mathrm{~mm} \)-focal length telephoto lens?
An aeroplane of 4Ć10^4 kg mass is designed with the line of thrust 8Ć10^(-1) m above the line of drag. In routine flight the drag is 15.2 kN, and the centre of pressure on the mainplane is 200 mm behind the centre of mass. If the centre of pressure on the tailplane is 12 m behind the centre ofā¦
Use the following half-life graph to answer the question: A graph titled half-life graph of a radioactive isotope is shown with mass remaining on the y axis from 0 to 60 grams and time on the x axis from 0 to 6 minutes. A curve connects the points 0, 50 and 1, 25 and 2, 12.5 and 3, 6.25 andā¦
Which of the following were used as evidence for the existence of the electron? Particles were traveling from the cathode towards the anode. The particles were deflected towards a negative charge. The same behavior was observed, no matter what metal was used for the cathode.
Which of the following supports the sea of background radiation phenomenon of the Big Bang Theory? Detection of radio noise Doppler shifts Nucleosynthesis of hydrogen The speed of light
A small flashlight bulb provides a resistance of 6.0 Ī© (Ohms) to the 400. mA current that runs through it. Determine the voltage of the battery in the flashlight. 2.4 V 4.6 V 6.4 V 15 V
A block of copper with mass 0.600 kg is heated to 400. degrees Celsius from 260. degrees Celsius. The specific heat capacity of copper is 387 J/ (kgĀ°C). The heat absorbed by the copper block is
If the threshold frequency for a photoemissive surface is 3.95 E 14 Hz, what is the work function for the surface? 1.25 eV 1.64 eV 1.89 eV 2.12 eV
Which two frequencies will produce a 5-Hz beat frequency if played simultaneously? 100 Hz and 500 Hz 243 Hz and 248 Hz 343 Hz and 393 Hz 561.0 Hz and 561.5 Hz
Study the following diagram for a thin lens. Diagram showing a thin lens placed at the midpoint of a horizontal axis with a vertical axis running through its center. On either side of the lens, four dots are evenly spaced, two on each side. Between the two dots on the left, and upward facingā¦
A dust particle with a charge of 3.2 Eā7 C is located near a dust cloth carrying a charge of +6.7 Eā7 C. If the force acting on the dust particle from the cloth is 4.8 Eā4 N, what is the distance between the particle and the cloth?
A red light is made to pass through two slits that are 1.60 Eā3 m apart. On a screen 5.00 m behind the slits, an interference pattern appears, with bands of light separated by 2.20 Eā3 m. What is the wavelength of the light?
Questions 19-20 Two blocks of masses m and 2m are connected by a very light flexible cord that runs without slipping over a pulley of mass m. The pulley is a solid uniform disk and is supported by a hook connected to the ceiling. The pulley rotates about its axle without friction. (The momentā¦
Please explain.
please explain
An ice figure skater starts out spinning at 0.89 revolutions per second with her arms outstretched. She wears lightly weighted bracelets to enhance the pin-up effect when she pulls her arms in. Where does this added energy come from? a) The additional energy comes from the friction. b) Theā¦
classical mechanics questionļ¼Hamilton-Jacobi eqļ¼
a solid sphere , a solid cylinder and a hollow cylinder (a tube), all of the same mass m and the same outer radius R , are released from rest at the top of an incline and start rolling without sliding, in which order do they arrive at the bottom of the incline ?
In a double-acting, 8-cylinder, 2-stroke cycle, compression ignition engine, the diameter of the cylinder is 700-mm, stroke is 1350-mm and the piston rod diameter is 250-mm. when running at 108 rpm, the indicated mean effective pressure above and below the piston are 5.80 bar and 4.90ā¦
The compression ratio of a spark-ignition engine is 8 to 1, the indicated engine efficiency is 80%, and the mechanical efficiency is 76% when 20% excess air is used. Determine the brake thermal efficiency.
please explain
please explain
please explain
please explain
please explain
please explain
please explain
please explain
When a figure skater makes a jump, he increases his rotation speed by pulling together his arms and legs. This reduces his rotational inertia causing him to spin faster. If the initial spin rate of a figure skater is 1RPM and he decreases his rotational inertia by half during the spin, whatā¦
4. Si los mĆ³viles A y B se encuentran en persecuciĆ³n y se des. plazan con MRU, calcula la distancia recorrida por \( B \) hasta el alcance. a) \( 158 \mathrm{~m} \) b) \( 160 \mathrm{~m} \) c) \( 162 \mathrm{~m} \) d) \( 159 \mathrm{~m} \) e) \( 161 \mathrm{~m} \)
26: Inductance is the physical phenomenon that explains how a time varying magnetic field causes an electric current in a wire. Explain how this concept is important to the design of the engineās ignition system. (i.e. How is the spark created?)
An acrylic beaker (with a coefficient of linear expansion of 6.8x10^-5 ā°C^-1 ) is filled wuth mercury at 25ā°C, thus having a capacity of 500 mL. It is then cooled down to 15ā°C. Calculate the mass of mercury, measured at 15ā°C, that must be added to make the beaker completely full. Consider theā¦
A circular tire of 1.2 m in diameter must be attached to a steel rim of the same diameter. In order to be able to adjust it, you want to heat up the tire until its radius is 5 mm greater than that of the rim. Knowing that the ambient temperature is 20ā°C and its coefficient of linear expansionā¦