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Physics 101 Mechanics
May 2023
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Physics 101 Mechanics Q&A Archive of May 24, 2023

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May 24 of 2023

Please solve 1-6 in matlab and provide code.

4) Assuming that the latent heat of vaporization of perspiration is \( 2.42 \times 10^{6} \mathrm{~J} / \mathrm{kg} \), find the change in the internal energy of the weight lifter. (b) Determine the minimum number of nutritional Calories of food ( 1 nutritional Calorie is \( 4186 \mathrm{~J} \)…

3)A gas undergoes isochoric heating, during which it gains \( 5470 \mathrm{~J} \) of heat and attains a pressure of \( 3.45 \times 10^{5} \mathrm{~Pa} \). Following this, it experiences an isobaric compression that is also adiabatic, in which its volume decreases by \( 6.84 \times 10^{23} \) \(…

1. A batter pops a baseball straight up to a maximum height of 45 m (above where it was hit). Assuming no air resistance, use energy methods to determine the speed it had when it left the bat. 2. In question 5, suppose air resistance reduced the total mechanical energy of the ball to only 75%…

2) Light bulb 1 operates with a filament temperature of \( 2700 \mathrm{~K} \), whereas light bulb 2 has a filament temperature of \( 2100 \mathrm{~K} \). Both filaments have the same emissivity, and both bulbs radiate the same power. Find the ratio A1/A2 of the filament areas of the bulbs. 3)…

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The temperature on the two surfaces of a 30 mm thick steel plate (k=50w/m0c) having a uniform volumetric heat generation of 20*106 w/m3 are and determineTemperature distribution across the plateThe value and position of max temperature Flow of heat from each surface of the plate

if an 8kg mass is pulled up an incline at a constant speed determine the tension in the string. what is the coefficient of frictiin between the 8kg mass and thw surface assuming there is no friction between the cord and the pully

Please be specific

A force vector F⃗ has a magnitude of 10.0 N. It is oriented 30 ∘ to the left of the +y axis. What are its x and y components?

Vector A⃗ has a magnitude A. If each component of A⃗ is doubled, what is its new magnitude?

Quantities

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A 15-kg rock is dropped from rest on the earth and reaches the ground in 1.75 s. When it is dropped from the same height on Saturn's satellite Enceladus, it reaches the ground in 18.6 s. What is the acceleration due to gravity on Enceladus?

An air refrigerator working on the principle of BellColeman cycle. The air into the compressor is at \( 1 \mathrm{~atm} \) at \( -10^{\circ} \mathrm{C} \). It is compressed to \( 10 \mathrm{~atm} \) and cooled to \( 40^{\circ} \mathrm{C} \) at the same pressure. It is then expanded to 1 atm and…

Two people are pushing a stalled car, as Figure \( 4.5 a \) indicates. The mass of the car is \( 1850 \mathrm{~kg} \). One person applies a force of \( 275 \mathrm{~N} \) to the car, while the other applies a force of \( 395 \mathrm{~N} \). Both forces act in the same direction. A third force…

2-) An abc-sequence three-phase voltage source connected in a balanced wye supplies power to a balanced delta-connected load. The line current for the \( a \) phase is \( \mathrm{I}_{\mathrm{aA}}=12 / 40^{\circ} \mathrm{A} \) rms. Find the phase currents in the delta-connected load. (25 p)

The Motor Shaft is connected to A and rotates at 975r.p.m. The gear wheels B. C. D and E are fixed to parallel shaft rotating together the final gear F is fixed on the output G. What is the Speed of F.The number of teeth on each wheel is given below:Gear A B C D E …

please explane

a constant volume gas thermometer indicate a pressure of 55molHg at the lower fixed point,the pressure becomes 125mmhg at the upper fixed point,At what temperature with the pressure be 20mmhg in celsius scale and fahrenheit scale

The \( 9,1 \mathrm{~kg} \) suitcase \( A \) is released from rest at C. After it slides down the smooth ramp, it strikes the \( 5,0 \mathrm{~kg} \) suitcase \( B \), which is originally at rest. If the coefficient of restitution between the suitcases is e \( =0.3 \) and the coefficient of…

QUESTION 3. (18:30-19:00) The semicircular block of \( 2 \mathrm{~kg} \) mass is kept in equilibrium by the three cords shown in figure. The center of mass is located on point \( \boldsymbol{O} \). The radius of gyration about mass center \( \boldsymbol{O} \) is \( k_{0}=0.9 \mathrm{~m} . \quad…

please answer

The rigid triangle ( boldsymbol{A B D} ) formed by three uniform bars shown in figure is moving on the frictionless slides at points ( boldsymbol{A} ) and ( boldsymbol{B} ). A disc of radius ( 0.1 mathrm{~m} ) which is hinged at the free end ( D ) is rotating with an angular velocity ( omega=10…

rrent in the phototransistor circuit \( \mathrm{mA} \) of base current is produced in

A of base current is produce Figure below is required to ransfer ratio is 60 percent, \( h \)

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As shown in figure, the collar ( A ) is sliding on the frictionless power screw with a velocity of ( 5 mathrm{~m} / mathrm{s} ) and acceleration of 7 ( mathrm{m} / mathrm{s}^{2} ). The collar ( boldsymbol{C} ) slides along the fixed bar.For the instant shown,(a) Determine the angular velocity…

Bar link mechanism

A stone was thrown upwards with an initial velocity of 20.0 m/s from a height of 50.0 m Find the following: a. the time required to reach the maximum height, b. the maximum height that can be reached by the stone, c. the velocity of the stone when it returns to the height from which it was…

The fact that a water stream emerging from a faucet "necks down" as it falls is shown in the figure, where \( A_{1}=1.8 \mathrm{~cm}^{2}, A_{2}=0.3 \mathrm{~cm}^{2} \), and \( h=25 \mathrm{~cm} \). What is the water flow rate from the faucet, assuming a steady flow?

Problem 3 A harmonic wave traveling along a string in the direction of increasing \( x \) has the following form \( y=0.4 \sin (0.2 x-5 t) \), where all the numerical constants are in SI units. Find the; a) amplitude, b) wave number, c) angular frequency, d) speed of the wave. e) wavelength, f)…

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PHY 111 FOUNDATION PHYSICS I ASSIGNMENTH03 Due Date: \( 25^{\text {th }} \) May, 2024. SEMESTER 1, 2023 Problem 1 The fact that a water stream emerging from a faucet "necks down" as it falls is shown in the figure, where \( A_{1}=1.8 \mathrm{~cm}^{2}, A_{2}=0.3 \mathrm{~cm}^{2} \), and \( h=25…

A hedge maze is a maze formed by tall rows of hedge. After entering, you search for the center point and then for the exit. Figure 3-16a shows the entrance to such a maze and the first two choices we make at the junctions we encounter in moving from point i to point c. We undergo…

When \( 5.0 \mathrm{~g} \) of a certain type of coal is burned, it raises the temperature of \( 1000 \mathrm{~mL} \) of water from \( 10^{\circ} \mathrm{C} \) to \( 47^{\circ} \mathrm{C} \). Calculate the thermal energy produced per gram of coal. Neglect the small heat capacity of the coal.

Q2) a) The eyebolt supports four forces as shown in Fig. 2 a. If the resultant of these forces is \( 3 \mathrm{kN} \) directed along \( \mathrm{x} \) - axis, determine the angle 0 and force \( \mathrm{T} .(2 \mathrm{kN}, \mathrm{T} \mathrm{kN}, 1.2 \mathrm{kN}, 1.8 \mathrm{kN}) \) \( [6]…

PROBLEM SET 1 1. A \( 3.25 \mathrm{~cm} \) high object is placed \( 28 \mathrm{~cm} \) in front of a convex mirror. Its image was formed \( 14 \mathrm{~cm} \) behind the mirtor. Find the (a) magnification of the image, (b) height of the mirror, (c) focal length of the mirror, and (d) radiw of…

Pula, Chinee Ashley G. 12 -STEM 3 General physiar 2 PROBLEM SET I 1. A \( 3.25 \mathrm{~cm} \) high object is placed \( 28 \mathrm{~cm} \) in front of a convex mirror. Its image was formed \( 14 \mathrm{~cm} \) betind the mirror. Find the \( (a) \) magnitication of the image, (b) height of the…

4. When a slingshot exerts a 10 Newton force on a rock, the rock accelerates at \( \mathbf{5 0} \) meters per second squared. What force is required to accelerate the rock to 150 meters per second squared? (A) 30 Newtons (B) 40 Newtons (C) 50 Newtons (D) 60 Newtons

Q2) a) Discuss the path-loss exponent effect on frequency Reuse for a cellular system with total 500 duplex voice channel without fequency reuse. The service area is divided into 152 cells. The required signal to co-channel interference ratio is \( 17 \mathrm{~dB} \). Considering path loss…

Sample Problem: 2 The frequency of blue light as it scatters in the sky is \( 7.5 \times 10^{14} \mathrm{~Hz} \). What is the wavelength of this blue light in nanometers?

The parallax angle for the star is 0.015 seconds of arc.What is the distance in parsecs of the star from the Earth

1. General guidelines on use of electrical equipment.

Question 1 (5 pts): Common salt is made of sodium chloride molecules (NaCl) where a Naratom gives an electron to a \( \mathrm{C} \) atom and they are held together by the electrostatic attractive force due to an eacess. proton on \( \mathrm{Na} \) and an excess electron on \( \mathrm{Cl} \)…

A force F of magnitude 210 N acts at the origin of a coordinate system. Knowing that Fx = 80 N, uz = 151.2, and Fy < 0. Determine (a) the components Fy and Fz. (b) the angles ux and uy

The two blocks shown in the sketch are released from rest with the spring in an unstretched position. The horisontal surface is frictionless, the spring has a spring constant k = 0,50 kN/m and m = 2,5 kg. The maximum distance by which the spring will be stretched, if one assumes that the…

factors which come into play when calculating the friction Di why of the particle interacting in a target are

Picture-based Questions1. An experiment is conducted to measure the density of an object of unknown material as shown.Mass of object is measured using wieghing machine and it turns out to be ( 100 mathrm{~g} ). Calculate the density of the object (in ( mathrm{g} / mathrm{cm}^{3} ) ).

Give Opamp circuit 1. Find and prove the value of \( \mathrm{VOUT}_{\text {OU }} \) 2. Advantages and applications of this circuit 3. Assume that \( \mathrm{V}_{\text {IN }}=10 \mathrm{mV} \); Find \( \mathrm{V}_{\text {OuT; }} \); 4. Assume that \( 10 \mathrm{mV} \) is the maximum input of the…

A tank 60 cm high is filled with water. A hole is made at the side 20 cm from the top. What horizontal distance from the base of the tank will the water fall on the ground

Physics Mechanics A Beam ABC With An Overhang At One End Supports A Uniform Load Of Intensity 12 KN/M And A Concentrated Moment Of Magnitude 3 KN ( M At C (See Figure). Draw The Shear-Force And Bending-Moment Diagrams For This Beam. 3 KN M 12 KN/M 1.6 1.6 M1.6 MA beam ABC with an overhang at…

a rope is looped around two pulley as shown in figure . Determine the force P required to hold the weight of 500 N

7. A metal casting has a mass of 40-g and a volume of 5,000-cc. By means of a cord, it is held suspended in oil of relative density 0.76. Find the buoyant force and the tension in the cord.

A certain type of germ doubles the number every 20 days. Two germs of this type were sent to space in a spacecraft and were brought back after 1000days. If the speed of the spacecraft persecond was 0.995times of the soeed of light, then how many germ will be found after returning of the…

A 350-g object weighs 300-g when suspended in a heavy liquid. If the volume of the liquid displaced is 70-cc, find the density of the object and the density of the liquid

21. A light source recedes from an observer with a speer \( v_{s} \) that is small compared with \( c \). (a) Show that the fin tional shift in the measured wavelengh is givell by approximate expression \[ \frac{\Delta \lambda}{\lambda} \approx \frac{v_{s}}{c} \] This phenomenon is known as the…

determine the steady state temperature distribution T(r)and heat flux Q, in a long cylinder of radius r=b, of cconstant thermal conductivity k, in which heat is generated at a rate g(r)=g0(1+Ar)Btu/h.ft^3 where g0 and A are constants, where the boundary at r=b is kept at a uniform temperature…

what is the angle are sin and cos arw equall

Consider the mass-on-a-spring system as shown in the figure below. The spring has a spring constant of 1.41e+3 N/m, and the block has a mass of 1.15 kg. There is a constant force of kinetic friction between the mass and the floor of 2.26 N. Starting with the spring compressed by 0.133 m from…

A summer camp hosts 500 campers. A random survey of 50 campers was conducted to determine which activit) was their favorite. The table shows the number of campers who chose each activity. Summer Camp Activities \begin{tabular}{|c|c|} \hline Activity & Number of Campers \\ \hline Swimming & 16…

Irodtari 2

the fact that a water stream emerging from a faucet "necks down" as it falls is where, area 1 = 1.8cm^2, area 2 = 0.3cm^2 and height is 25cm. what is the water flow rate from the faucet, assuming a steady flow?

Consider a mass-spring system. The spring has a spring constant of 1.18e+3 N/m. At the end of the spring there is a mass of 4.05 kg. At the moment that the block is at the system's equilibrium position, it has velocity 2.90 m/s. What will be the maximum displacement of the block from…

A 3.30 × 10^5 kg subway train is brought to a stop from a speed of 2.21 miles per hour in 0.481 m by a large spring bumper at the end of its track. What is the force constant k of the spring?

1. A batter pops a baseball straight up to a maximum height of 45 m (above where it was hit). Assuming no air resistance, use energy methods to determine the speed it had when it left the bat. 2. In question 5, suppose air resistance reduced the total mechanical energy of the ball to only 75%…

if an 8kg mass is pulled up an incline at a constant speed determine the tension in the string. what is the coefficient of frictiin between the 8kg mass and thw surface assuming there is no friction between the cord and the pully

A force vector F⃗ has a magnitude of 10.0 N. It is oriented 30 ∘ to the left of the +y axis. What are its x and y components?

Vector A⃗ has a magnitude A. If each component of A⃗ is doubled, what is its new magnitude?

A 15-kg rock is dropped from rest on the earth and reaches the ground in 1.75 s. When it is dropped from the same height on Saturn's satellite Enceladus, it reaches the ground in 18.6 s. What is the acceleration due to gravity on Enceladus?

please explane

please answer

A stone was thrown upwards with an initial velocity of 20.0 m/s from a height of 50.0 m Find the following: a. the time required to reach the maximum height, b. the maximum height that can be reached by the stone, c. the velocity of the stone when it returns to the height from which it was…

Please be specific

A force F of magnitude 210 N acts at the origin of a coordinate system. Knowing that Fx = 80 N, uz = 151.2, and Fy < 0. Determine (a) the components Fy and Fz. (b) the angles ux and uy

Consider the mass-on-a-spring system as shown in the figure below. The spring has a spring constant of 1.41e+3 N/m, and the block has a mass of 1.15 kg. There is a constant force of kinetic friction between the mass and the floor of 2.26 N. Starting with the spring compressed by 0.133 m from…

Consider a mass-spring system. The spring has a spring constant of 1.18e+3 N/m. At the end of the spring there is a mass of 4.05 kg. At the moment that the block is at the system's equilibrium position, it has velocity 2.90 m/s. What will be the maximum displacement of the block from…

A 3.30 × 10^5 kg subway train is brought to a stop from a speed of 2.21 miles per hour in 0.481 m by a large spring bumper at the end of its track. What is the force constant k of the spring?