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May 2023
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Physics 101 Mechanics Q&A Archive of May 12, 2023

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May 12 of 2023

8. An equation used in thermodynamics is the Benedict-Webb-Rubine equation of state for the expansion of a gas. The equation is: \[ \begin{aligned} p=\frac{R T}{V} & +\left(B_{0} R T-A_{0}-\frac{C_{0}}{T^{2}}\right) \frac{1}{V^{2}} \\ & +(b R T-a) \frac{1}{V^{3}}+\frac{A \alpha}{V^{6}} \\ &…

4. An electron moving with a speed of \( 9.1 \times 10^{5} \mathrm{~m} / \mathrm{s} \) in the positive \( x \) direction experiences zero magnetic force. When it moves in the positive \( y \) direction, it experiences a force of \( 2.0 \times 10^{-13} \mathrm{~N} \) that points in the negative…

1. A wire with a length of \( 3.7 \mathrm{~m} \) and a mass of \( 0.75 \mathrm{~kg} \) is in a region of space with a magnetic field of \( 0.81 \mathrm{~T} \). What is the minimum current needed to levitate the wire?

Head, Department of Physics DIRE DAWA UNIVERSITY College of Natural and Computational Sciences Department of physics Remedial physics Assignment Maximum load (20\%) Academic year: 2015 E.C Target of Assignment: Group 1. If \( \vec{A}=6 i-8 j, \vec{B}=-8 i+3 j \) and \( \vec{C}=26 i+19 j \).…

4. QUESTIONS 1. Is the amount of stretch of the springs proportional to the hanging mass? Explain briefly. 2. Derive a theoretical expression to find \( k \) equivalent for springs in parallel and springs in series. 3. What are possible sources of error in this experiment?

you are climbing a rope straight up toward the ceiling. what is the magnitude of the force you must exert on tge rope in order to accelerate upward at 1.2m/s2 assuming your inertia is 57kg?

An object with mass m1 = 42 kg is located at the origin. Another object with mass m2 = 54 kg is located at l2 = 0.17 m. Consider position la = 0.044 m between the two objects and along the axis connecting them. Refer to the diagram. The gravitational field of m1 is denoted by g1. Enter an…

A machine component 1.5 m long and weight 1000 N is supported by two ropes AB and CD as shown in opposite Figgiven below, T_{1}/T_{2} =

When exploring a small planet with a radius of 789 km and a mass of 8.28 x 10^21 kg, a projectile with a mass of 8.12 kg is launched from its surface at escape velocity. Unfortunately, the projectile collides with the spacecraft that is orbiting at an altitude of 1425 km above the surface.With…

Block A has a mass of 1.0 kg and block B’s mass is 4.0 kg. The two blocks rest on a frictionless surface and are pushed with a force of magnitude 10.0 N. a) What is the acceleration of the blocks? b) With what force does A push on B? B push on A?

When exploring a small planet with a radius of 524 km and a mass of 7.98 x 1020 kg, a small spacecraft with a mass of 8220 kg is placed in an elliptical orbit around it. When the spacecraft is at a distance of 2150 km from the center of mass of the small planet, it has an orbital speed of 447…

A kg red book is suspended from a spring attached to the ceiling of an elevator that is accelerating downward.Attaching the book causes the spring to stretch 63 mm beyond its relaxed length.What is spring constant?

A small trailer and its load have a total mass of 300 kg. The trailer is supported by two springs, and when the boat is given an initial displacement x0 downward and released from rest, the amplitude of oscillation is reduced to ¼ x0 after one-half cycle and the period of the oscillation is 0.8…

You are constructing a mobile out of 5 identical toy helicopters, each of mass m = 28.4 g, 4 identical sticks (each length l = 21.4 cm, and negligible mass), and thin string of negligible mass. The distance from the left-hand side of each stick to the attachment point of the sting supporting it…

and a wavelength of 5 m (i.e., the distance between successive crests is 5 m and the vertical distance from crest to trough is 70 mm).(A) Determine the damping ratio.(B)Determine the spring stiffness.(C)Determine the amplitude of the vibration of the trailer at a speed of 60 km/h.

each ef them. Define specifie heat and cahotie. 4. Define spritio heat and cakore. of a body and the specifie heat capaity of a substance. 6. \( \quad 32 \mathrm{~g} \) of water at \( 60 \mathrm{C} \) is poured into \( 60 \mathrm{~g} \) of cold water at \( 12^{-} \mathrm{C} \). which is…

at what altitude from the Earth's surface the acceleration due to gravity will be 4.9m/s²

construct ITR of a vertical well of an oil when given payzone thick

1. Calculate the radius of 133CS, one of the most tightly bound stable nuclei

In an ideal reheat-regenerative cycle, steam enters the engine at \( 8 \mathrm{MPa} \) and \( 400^{\circ} \mathrm{C} \). After expansion to \( 280^{\circ} \mathrm{C} \), the steam is withdrawn and reheated to \( 340^{\circ} \mathrm{C} \). Extractions for feedwater heating occur at \( 1.6…

qualitative description of blackbody radiation including the ultraviolt catastrophe

An Euler column is safely to carry a compressive load of 60 kN. The cross sectional area is A=1452 mm2 . The radii of gyrations are rx= 14.75 mm and ry= 41.6 mm. Knowing E= 200 GPa and that the ends are simply-supported all around, determine the maximum allowable length L. Use F.S.=…

15 mm diameter rod is loaded as shown in the figure on the right. Do the following:a. Determine support reactions [1 mark]b. Sketch the Shear Force Diagram [1 mark]4 m|12 kN2 mCBc. Identify where the maximum shear stress occurs (region AC i region CB / point A / Point

7. A skater spins with an angular speed of \( 12 \mathrm{rad} / \mathrm{s} \) with his arms outstretched. He lowers his amms, decreasing his moment of inertia from \( 42 \mathrm{kgm} 2 \) to \( 36 \mathrm{kgm} 2 \). a) Calculate his initial and final rotational kinetic energy. b) Is the…

a police car siren emits a frequency of 4084Hz while driving down the road at a speed of 16.0m/s. a person driving a car in the same direction behind the police car hears a frequency of 4000Hz. how fast is the following car going?

An ice skater is preparing for a jump with turns and has his arms extended. His moment of inertia is 1.8 kg⋅m2 while his arms are extended, and he is spinning at 0.69 rev/s. Then he simultaneously pulls his arms in and launches himself into the air at 5.3 m/s at an angle of 41∘ with respect to…

1. A steel wire of length \( 40 \mathrm{~cm} \) vibrates in unison or in tune with a closed pipe of effective length \( 60 \mathrm{~cm} \), when each one is sounding its fundamental note. Neglecting end correction, calculate the tension in the wire. The velocity of sound in air is \( 330…

Q8. A body moves with simple harmonic motion of amplitude 0.90 m and period 8.9 s. What is the speed of the body when its displacement is 0.70 m? A 0.11 m s-1 B 0.22 m s-1 C 0.40 m s-1 D 0.80 m s-1

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Sarita has power of 480 watt. Calculate the amount of mass lifted by her up to 10 metres in 12 seconds. Ans: \( 57.6 \mathrm{~kg} \)

A 500 kg football is thrown with a velocity of 15.0 m/s to the right. A stationary receiver catches the ball and brings it to rest in .0200s. What is the force exerted on the ball by the receiver? (magnitude & direction)

Q16A A potential difference of \( \Delta V=10 \) volts is applied to the ends of a straight wire with cross section \( A \) length of \( L=1(\mathrm{~m}) \). The resistivity of the wire varies with \( \rho(x)=(1+x)(\Omega \mathrm{m}) \). Here \( x \) is the distance measured from one end of the…

4. An ideal gas is allowed to expand slowly at constant temperature to twice its original volume. During the expansion, the gas absorbs \( 200 \mathrm{~kJ} \) of heat. How much work does the gas do during the expansion?

6. A cube \( 22 \mathrm{~cm} \) on each side contains \( 3.4 \mathrm{~g} \) of helium at \( 20^{\circ} \mathrm{C} .1000 \mathrm{~J} \) of heat energy are transferred to this gas. a. What is the final pressure if the process is at constant volume?

3. An ideal gas is allowed to expand slowly at constant temperature to twice its original volum During the expansion, the gas absorbs \( 200 \mathrm{~kJ} \) of heat. What is the change in the internal (the energy of the gas during the expansion? \[ E_{t h}= \]

2. The gas in a perfectly insulated system does work at a rate of \( 13 \mathrm{~W} \). At what rate is the internal (thermal) energy of the gas changing? \[ P= \] W

A trapezoidal slab ABCD is simply supported along the two edges, AB and CD, and pinned along BC as shown in FIGURE Q1. The slab is subjected to a uniformly distributed load of 12 kN/m2. Determine the maximum resistance moment for the failure mechanism of the slab if edge EF displaced one…

A uniform rod of mass M = 2.81 kg and length L 1.14 m can rotate about a hinge = at its left end and is initially at rest. A putty ball of mass m= 65.2 g, moving with speed v = 5.74 m/s, strikes the rod at angle = 52,7degree from the normal at a distance D = 2/3L from the point of rotation, and…

If an average American is responsible for consuming a barrel of oil every 18 days, what power does this correspond to, in Watts?

The curve \( y=\frac{a^{2}}{x+1}-b^{2} x \) at the point \( (-2,2) \) has the gradient -25 . Find the following:

A uniform rod of mass M = 2.81 kg and length L 1.14 m can rotate about a hinge = at its left end and is initially at rest. A putty ball of mass m= 65.2 g, moving with speed v = 5.74 m/s, strikes the rod at angle = 52,7degree from the normal at a distance D = 2/3L from the point of rotation, and…

What I Know Solve for the volume of the following figures. Write your answers on your 1. 3. 5.

Type question here (Keep it short & clear to get the best answer)

A particle was subjected to a force Fx that varies with position as described by the Fx vs. x graph below. How much work was done by the force on the body as it moves from x=0 to x= 10.0 m?

Globally, do any of the resources appear to be phasing out? If so, how long before we would expect to reach zero usage globally, based on simple extrapolation?

Globally, do any of the resources appear to be phasing out, as coal is in the U.S. (as in Problem 11)? If so, how long before we would expect to reach zero usage globally, based on simple extrapolation?

The diagram given below shows two uniform rigid rods AB and CD that are leaning against each other while standing in the same vertical plane on a rough horizontal surface with coefficient of friction mu. The rod AB has mass 1,9kg and length 1,4m and the rod CD has mass 2,6kgand length 1,9m.…

A block attached to a spring, as shown in the figure below, starts from rest with the spring unextended and moves 1.2 meters down the incline causing the spring to extend. The surface is inclined 32o from the horizontal, the spring constant is 12.7 N/m, and the block weighs 3.5 kg. How much…

lo sentonces on voir using Avoir er frre

Hi, can I pls have help on this problem? I have a bad trig background so diagram will help. thanks!

Illustrated bu Glenn Freu L Directions: Locate the latitude and the longitude of some areas here in the Philippines using the points given beldth on the Philippine Map. Write your answers on a separate sheet of paper. Source: DepEd Grade 7 LM \begin{tabular}{|c|c|c|c|} \hline Point on the Map…

Quantities given on the problem: Initial velocity \( \left(V_{0}\right)=15 \mathrm{~m} / \mathrm{s} \) Angle of projection \( (\theta)=37^{\circ} \) Quantities to calculate: \begin{tabular}{|l|l|l|l|l|l|} \hline\( V_{\text {or }} \) & \( V_{\text {oy }} \) & \( t \) & t \( _{\text {total }} \)…

Use the information in your table and the provided graph paper to draw a graph of acceleration versus force. Extend the graph so that it cuts the \( y \)-axis. - Conclusion. Write down a conclusion for your experiment. Refer to your experiment results and answer the following questions: 1.…

For the circuit shown in Fig. 28-17, find (a) the equivalent resistance; \( (b) \) the currents through the \( 5.0-\Omega \), 7.0- \( \Omega \), and \( 3.0-\Omega \) resistors; \( (c) \) the total power delivered by the battery to the circuit. Ans. (a) \( 10 \Omega \); (b) \( 12 \mathrm{~A},…

EQUIVALENT RESISTANCE; SIMPLE CIRCUITS 291 In the circuit shown in Fig. 28-16, 23.9 calories of thermal energy are produced each second in the 4.0- \( \Omega \) resistor. Assuming the ammeter and two voltmeters to be ideal, what will be their readings? Ans. \( 5.8 \mathrm{~A}, 8.0 \mathrm{~V},…

In the circuit shown in Fig. 28-16, 23.9 calories of thermal energy are produced each second in the 4.0-? resistor. Assuming the ammeter and two voltmeters to be ideal, what will be their readings? Ans. \( 5.8 \mathrm{~A}, 8.0 \mathrm{~V}, 58 \mathrm{~V} \)

resistor. Assuming the ammeter and two voltmeters to be ideal, what will be their readings? Ans. \( 5.8 \mathrm{~A}, 8.0 \mathrm{~V}, 58 \mathrm{~V} \)

The body is at \( \mathrm{x}=+36 \mathrm{~m} \) at \( \mathrm{t}=0 \). The average velocity \( ( \) in \( \mathrm{m} / \mathrm{s}) \) of the body in the time interval between \( \mathrm{t}= \) 0 and \( \mathrm{t}=3 \mathrm{sec} \). 4. A particle travelling along a straight line with constant…

Type question here (Keep it short & clear to get the best answer)

The amount of work an external agent must do in assembling four charges \( +2.0 u \mathrm{C} \) \( +3.0 \mu \mathrm{C}+4.0 \mu \mathrm{C} \) and \( +5.0 \mu \mathrm{C} \) at the vertices of a square of side \( 1.0 \mathrm{~cm} \), starting each charge from infinity is Joules.

Question 1. Fluid Statics/Dynamics a) Scientist has found evidence that Mars may onee have had an ocean \( 0.500 \mathrm{~km} \) deep. The acceleration due to gravity on Mars is \( 3.71 \mathrm{~m} / \mathrm{s}^{2} \). i. What would be the gauge pressure at the bottom of such an ocean, assuming…

c. boil 0.345 moles of water at \( 100.0 \mathrm{C} \). d. boil 43.89 grams of water at \( 100.0{ }^{\circ} \mathrm{C} \). 5. Determine the energy change involved to: a. Convert 34.0 grams of water at \( 20.0^{\circ} \mathrm{C} \) to steam at \( 100.0^{\circ} \mathrm{C} \). b. Convert 125.0…

0. You cast some metal of density \( \rho m=8.9 \times 103 \) \( \mathrm{kg} / \mathrm{m} 3 \) in a mold, but you are worried that there might be cavities within the casting. You measure the weight of the casting to be \( w \), and the buoyant force when it is completely surrounded by water to…

The resistance of a wire is measured to be \( R_{0}=46 \) ohms at \( T_{0}=14^{\circ} \mathrm{C} \). What would the resistance of the wire, \( \mathrm{R} \), be at \( T=160^{\circ} \mathrm{C} \) ? Take the temperature coefficient of resistivity, \( \alpha=5.7 \times 10^{-3} \) per \( {…

A parallel plate capacitor has plates of area \( \mathrm{A}=19 \times 10^{-3} \mathrm{~m}^{2} \) and plate separation \( d= \) \( 4 \times 10^{-4} \mathrm{~m} \). Air fills the volume between the plates. What potential difference, in volts, is required to establish a \( \mathrm{Q}=32…

A charged particle (with \( q=9.6 \times 10^{-2} \mathrm{C} \) ) that is moving through a uniform tic field has a speed \( v=8.7 \times 10^{5} \mathrm{~m} / \mathrm{s} \) when it experiences a force \( \mathrm{F} \) due to the magnetic field. The tic field is \( B=8.6 \times 10^{-3} \mathrm{~T}…

There are two long, thin wires that carry currents in the positive \( z \) direction. Both wires are parallet to the \( z \) axis. One wire is in the \( x-z \) plane and it carres a current of \( l_{1}=31 \) A This wire is a distance of \( \mathrm{r}_{1}=7 \mathrm{~m} \) from the \( z \) axis.…

A solenoid, with \( \mathrm{n}=1,506 \) turnsim, carries a current of \( \mathrm{I}=149 \mathrm{~A} \). What is the magnetic field inside the solenoid in milli-Tesla? Take the magnetic permeability, \( \mu_{0}= \) \( 4 \pi \times 10^{-7} \mathrm{~T} \mathrm{~m} / \mathrm{A}, 1.0 \) milli-Tesla…

An \( \mathrm{N}=580 \)-tum conducting loop with an area of \( \mathrm{A}=0.062 \mathrm{~m}^{2} \) rotates in a uniform magnetic field so that the induced emf has a sinusoidal time dependence as shown. What is the strength of the magnetic feld, in mill-Testa, in which the loop rotates? 1.0…

A slider of mass m can move without friction in a slit along the diameter of a horizontal disc of mass M and radius R. The slider is connected to the ends of the slit by two identical springs of stiffness k and relaxed length R each; so assume that slider motion is limited by the length…

Teropong memiliki panjang \( 45 \mathrm{~cm} \) digunakan untuk melihat planet Mars. Jarak fokus lensa objektifnya sebesar \( 40 \mathrm{~cm} \). Untuk penglihatan dengan mata tak berakomodasi maka perbesaran total teropong adalah..... kali. A. 5 D. 20 B. 8 E. 25 C. 10

\[ \left(-6.4 \mathrm{~m} / \mathrm{s}^{2}\right) \] 3) Optimus Prime coasts up a hill initially at \( 11.0 \mathrm{~m} / \mathrm{s} \). After \( 9.3 \mathrm{~s} \) he is rolling back down the slope at \( 7.3 \mathrm{~m} / \mathrm{s} \). What is his acceleration?

Two blocks are connected via a massless rope over a massless, frictionless pulley. Mass M = 13.7 kg, and mass m = 7.49 kg. If they both have a coefficient kinetic friction of 0.291 what will the magnitude of the acceleration of this system be?

A large mass M = 15.8 kg is connected to a small mass m = 8.76 kg by a cable with a mass of 3.36 kg. If a person pushes horizontally on mass M with a value of 50.9. What force does the cable put on the little mass m?

An object with mass m1 = 42 kg is located at the origin. Another object with mass m2 = 54 kg is located at l2 = 0.17 m. Consider position la = 0.044 m between the two objects and along the axis connecting them. Refer to the diagram. The gravitational field of m1 is denoted by g1. Enter an…

When exploring a small planet with a radius of 789 km and a mass of 8.28 x 10^21 kg, a projectile with a mass of 8.12 kg is launched from its surface at escape velocity. Unfortunately, the projectile collides with the spacecraft that is orbiting at an altitude of 1425 km above the surface.With…

Block A has a mass of 1.0 kg and block B’s mass is 4.0 kg. The two blocks rest on a frictionless surface and are pushed with a force of magnitude 10.0 N. a) What is the acceleration of the blocks? b) With what force does A push on B? B push on A?

When exploring a small planet with a radius of 524 km and a mass of 7.98 x 1020 kg, a small spacecraft with a mass of 8220 kg is placed in an elliptical orbit around it. When the spacecraft is at a distance of 2150 km from the center of mass of the small planet, it has an orbital speed of 447…

1. Calculate the radius of 133CS, one of the most tightly bound stable nuclei

An ice skater is preparing for a jump with turns and has his arms extended. His moment of inertia is 1.8 kg⋅m2 while his arms are extended, and he is spinning at 0.69 rev/s. Then he simultaneously pulls his arms in and launches himself into the air at 5.3 m/s at an angle of 41∘ with respect to…

Q8. A body moves with simple harmonic motion of amplitude 0.90 m and period 8.9 s. What is the speed of the body when its displacement is 0.70 m? A 0.11 m s-1 B 0.22 m s-1 C 0.40 m s-1 D 0.80 m s-1

4)

A uniform rod of mass M = 2.81 kg and length L 1.14 m can rotate about a hinge = at its left end and is initially at rest. A putty ball of mass m= 65.2 g, moving with speed v = 5.74 m/s, strikes the rod at angle = 52,7degree from the normal at a distance D = 2/3L from the point of rotation, and…

If an average American is responsible for consuming a barrel of oil every 18 days, what power does this correspond to, in Watts?

A uniform rod of mass M = 2.81 kg and length L 1.14 m can rotate about a hinge = at its left end and is initially at rest. A putty ball of mass m= 65.2 g, moving with speed v = 5.74 m/s, strikes the rod at angle = 52,7degree from the normal at a distance D = 2/3L from the point of rotation, and…

A particle was subjected to a force Fx that varies with position as described by the Fx vs. x graph below. How much work was done by the force on the body as it moves from x=0 to x= 10.0 m?

A block attached to a spring, as shown in the figure below, starts from rest with the spring unextended and moves 1.2 meters down the incline causing the spring to extend. The surface is inclined 32o from the horizontal, the spring constant is 12.7 N/m, and the block weighs 3.5 kg. How much…

Hi, can I pls have help on this problem? I have a bad trig background so diagram will help. thanks!

Two blocks are connected via a massless rope over a massless, frictionless pulley. Mass M = 13.7 kg, and mass m = 7.49 kg. If they both have a coefficient kinetic friction of 0.291 what will the magnitude of the acceleration of this system be?

A large mass M = 15.8 kg is connected to a small mass m = 8.76 kg by a cable with a mass of 3.36 kg. If a person pushes horizontally on mass M with a value of 50.9. What force does the cable put on the little mass m?