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Physics 101 Mechanics
May 2023
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Physics 101 Mechanics
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May 30, 2023
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May 30 of 2023
2. A car starts from rest and accelerates uniformly over a time of 5.21 seconds for a distance of \( 110 \mathrm{~m} \). Determine the acceleration of the car. GIVEN: FORMULA:
A 5.71 kg ball moving initially at 10.8 m/s hits a 6.99 kg ball at rest, in a linear elastic collision. What is the speed of both balls?
A 17.5 gram bullet initially moving at a speed of 229 m/s hits a 1.15 kg block and comes out the back of the block with a speed of 76.4 m/s. How fast is the block moving after the bullet leaves it?
If a 63.8 gram tennis ball approaches a player with an initial speed of 23.2 m/s and she returns it with a speed of 29.0 m/s, what impulse was given to the tennis ball?
Un auto de juguete, de \( 3 \mathrm{~kg} \) de masa viaja con una rapidez de \( 20 \mathrm{~m} / \mathrm{s} \). En cierto instante, al auto se le aplica una fuerza externa horizontal de \( 35 \mathrm{~N} \) opuesta al movimiento. La superficie presenta un coeficiente de rozamiento cinĆ©tico, \(ā¦
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9. The primary coil of a transformer is connected to a battery, a resistor, and a switch. The secondary Coil is connected to an ammeter. What does the ammeter show when the switch is thrown closed?
Show that whether the following series is convergent or divergent. (a) Pā 1 2 2n3 1ān (b) Pā 1 [(0.8)nā1 ā (0.3)n ] (c) Pā 1 1 n2 + 1
A 300 g particle (A), initially moving to the right along a frictionless track at 1.0 m/s, bounces elastically off a 600 g particle (B) that is initially at rest. what will be position time and velocity time graph for A and B each?
Text \& Tests 2 Higher Level (ii) If half the volume of the container is filled with liquid, calculate the height, \( h \mathrm{~cm} \), of liquid in the container. Sectic Some pro In these to find the e.g.
1) [(lab manual Eq. (10)] There are two marks on the ramp that are 1 meter apart. If it takes 2.7 seconds to roll from the 1st mark to the 2nd mark, what is the measured acceleration? 2) If all you have is a ruler and calculator, show measurements would you take to measure sin(Īø) on theā¦
The ship sails upstream from the shore view with velocity \( v_{1} \). While sailing downstream it has velocity \( v_{2} \). Calculate the ship's velocity when there is no river current and the velocity of the river.
A loading condition on a beam is shown in the figure. Below are the values to be used for the various loads, concentrated forces and distances. 9. = 10 N/m F = 100 N a = 1 m Create a shear force and bending moment diagram. From the equations and/or the plot, determine the location at which theā¦
Engr statics Topic: Shear and Bending Moment A gantry crane of weight W-100 Kg moves across a bridge with the length 1-5 m. The front axle of the crane (which is nearer end A) carries 3/4W whereas the rear axle (nearer end B) carries 1/4 W. The distance of the axles is b = 1/20. Determine theā¦
solve for the forces
A snowmobile is originally at the point with position vector 29.0 m at 95.0 ā¦ counterclockwise from the x- axis, moving with velocity 4.50 m.s ā1 at 40.0 ā¦ . It moves with constant acceleration 1.90 m.s ā2 at 200ā¦ . After 5.00 s have elapsed, find (a) its veloci
- Question \#3 Use Work and Energy Principle to calculate the velocity \( v \) of the 50-kg crate when it reaches the bottom of the chute at B if it is given an initial velocity of \( 6(\mathrm{~m} / \mathrm{s}) \) down the chute at A. The coefficient of kinetic friction is \( \mu_{k}=0.3 \).
Question Stem A grounded metallic ball of radius ' \( a \) ' is placed on the centre of a uniformly charged thin insulating disc of radius \( R(R \gg a) \). The total charge on the disc is \( Q \).
why?
please answer
6. Two perfectly black parallel plates A and B of equal area facing each other are maintainot at constant temperature \( T_{A} \) and \( T_{B}\left(T_{A}>T_{B}\right) .99 \) perfectly black and conducting identical screens of same area as plates are introduced between \( A \) and \( B \),ā¦
11 A particular photocell uses a sodium cathode. Sodium has a threshold wavelength of 680 \( \mathrm{nm} \). Find the work function of sodium in eV. = \( \square \) (3 Points) \( 6.32 \mathrm{eV} \) \( 1.83 \mathrm{eV} \) \( 2.56 \mathrm{ev} \) \( 5.56 \mathrm{eV} \)
7 How is the threshold Frequency related to the photoelectric effect? = DI (2 Points) the minimum frequency of incident radabion needed to cause the ciection of alems froen the cathode cf a photocel the mavimum thequency of incident radation noeded to case the ciection of atoert fom the anodeā¦
6 What potential difference is needed to stop electrons with a maximum kinetic energy of \( 4.8 \times 10^{\wedge}-19 \mathrm{~s} \) ? [. (3 Points) \( 299 \mathrm{~V} \) \( 7.68 \times 10^{n}-38 \mathrm{v} \) \( 4.15 \mathrm{~V} \) \( 7.65 \times 10^{\circ} .16 \mathrm{~V} \)
5 According to Planck's theory, what is the frequency of vibration of an atom if it gives off \( 5.44 \times 10^{A}-19 \) J while changing its value of \( n \) by 1 ? \( \mathrm{*} \) ( (2 Points) \( 8.21 \times 10^{\wedge} 16 \mathrm{HE} \) \( 8.21 \times 10^{\wedge} 14 \mathrm{rt} \) \( 821ā¦
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A Weighted Forearm Goal : Apply the equilibrium conditions to the human body. Problem: A 50.0-N \( (11 \mathrm{ib}) \) bowling ball is held in a person's hand with the forearm horizontal. The biceps muscle is attached \( 0.0300 \mathrm{~m} \) from the joint, and the ball is \( 0.350 \mathrm{~m}ā¦
A thin uniform rod (length 1 m mass 2 kg ) is pivoted about a horizontal frictionless pin through one of its ends. The moment of inertia of the rod through this axis is 1/3 m l^2 The rod is released when it is below the horizontal. What is the angular acceleration of the rod at the instantā¦
Wse the data in Table 14.1 and in Table 14.2 where appropriate. 5 A hump of copper of mass \( 120 \mathrm{~g} \) is heated in a gas flame. It is then transferred to a mass of \( 450 \mathrm{~g} \) of water, initially at \( 20^{\circ} \mathrm{C} \). The final temperature of the copper and theā¦
ACTIVITY PLAN FOR THE CHAPTER: MOTION To understand that the displacement of an object is less than the distance travelled by the object. i. You have to go from one corner of the Living room to the opposite corner by different routes possible.
Air is flowing over a flat plate at a velocity of 7 m/s with a temperature of 20 ļ°C. The plate has a width of 2 m and a length of 8 m with a temperature of 140 ļ°C. Determine the rate of heat transfer from the plate if the air flows along the 8 m side. The average temperature for the film isā¦
A 4-pole machine has a lap-wound armature with 90 slots each containing 4 conductors. If the machine runs at \( 1800 \mathrm{rpm} \) and the flux per pole is \( 0.02 \mathrm{~Wb} \), calculate the emf generated. If the machine is run as a shunt generator with the same flux, the armature andā¦
A \( 500-\mathrm{V} \) d.c. series motor with terminal resistance of \( 0.5 \mathrm{ohms} \) drives a load, the torque of which varies as the square of the speed. When the speed is \( 600 \mathrm{rpm} \), the current drawn by the motor is \( 30 \mathrm{~A} \). If the speed is to be reduced toā¦
The figure shows the case where a pipe with radius r1 is surrounded by an insulation material between r1 and r2. In class we have shown that the heat loss can be given using the following equation: q= 21 TāT 1ļ„ ln(r /r)+ 1 2ļ°k 2ļ°r hL In class we have also discussed that the critical radiusā¦
Consider the iron plate that has a thickness L. On the left side of the plate a constant heat flux is applied with q (W/m3). On the right side there is fluid flow with a temperature of( T infinite). Find T1 and T2 given the data below. L, cm=2 k, W/m/C = 20 q, W/m^2 = 1*10^5 (Tā¦
62. \( M \) A water slide is constructed so that swimmers, starting from rest at the top of the slide, leave the end of the slide traveling horizontally. As the drawing shows, one person hits the water \( 6.00 \mathrm{~m} \) from the end of the slide in a time of \( 0.700 \mathrm{~s} \) afterā¦
kind of sound to enhance the mood of the scene katy dela Cruz
5. A feather is dropped on the moon from a height of 1.40 meters. The acceleration of gravity on the moon is \( 1.67 \mathrm{~m} / \mathrm{s} 2 \). Determine the time for the feather to fall to the surface of the moon. FORMULA:
QUESTION 1 Engineers that build beam structures come across problems dealing with bending moment (M) and shear force (V) across the beam's span/length. There is a relationship between the bending moment and the shear force that relates to the location where the maximum bending moment occurs onā¦
\( \left(D^{2}-3 D+2\right) y=2 x^{2}+1 \)
5. Banu akan membuat gambar gelombang air yang bergerak dengan kecepatan \( 12 \mathrm{~m} / \mathrm{s} \) dengan periode 4 sekon. Jika amplitudo gelombang dan \( k x \) bertanda negatif (-), gambar gelombang yang benar adalah ....
Is the angle between these two vectors? 3. You are given vectors \( \overrightarrow{\boldsymbol{A}}=5.0 \hat{\imath}-6.5 \hat{\jmath} \) and \( \overrightarrow{\boldsymbol{B}}=-3.5 \hat{\imath}+7.0 \hat{\jmath} \). A third vector \( \overrightarrow{\boldsymbol{C}} \) lies in the xy-plane.ā¦
Answer the following questions 1. How many kilowatt hours of electriciey weretused dufing Jannar? 2. If the do asic for cthe first 30 KwH is 730.00 and the succeddin kilowatt hour is R. 00. How much did the electricity cost for January? 3. what is the average cost of electricity per day duringā¦
2Activity 2. Computation.Direction: Calculate the following problem on ideal gas law.1. A 500mL metal cylinder holding 0.100 moles of helium gas is known to rupture at a pressure of 10 atmosphere. At what temperature will the container fail?Given:Solution:Required:Formula:6
of \( 40^{\circ} \). a) Calculate the angle of refraction, (154) b) Calculate the speed of light in diamond \( \left(1.24 \times 10^{4} \mathrm{~ms}^{3}\right) \)
A stone is thrown vertically upward with velocity of 15 m/s at the same time, 10 m vertically above a second stone is allowed to fall. After what time and at what height do they collide [take g = 10 ms-2 ]
Data: Īø1 = 32.7 Īø2 Īø2 = 141.1 A = 3.6 cm B = 6.4 cm x component of vector a is 3.03 cm and y component of vector a is 1.94, the x-component of vector B is approximately -5.03 cm (Figure Included Here) With the diagram and the above data answer these questions: what is the yā¦
Find the probability distribution for the absolute magnitude of the velocity v of an atom, and then the mean square fluctuation and the mean value of the nth power of v.
5. Figure shows a cord wrapped around solid disk of radius \( R=12 \mathrm{~cm}, M=400 \) \( \mathrm{g} \), attached to a suspended body of mass \( m=50 \mathrm{~g} \). Assuming there is not slippage of the cord on the solid disk, find the speed of the block after it has descended \( 50ā¦
Design solar heat exchanger of a 5 kW, thermal power plant using Refrigerant R134a. Turbine inlet condition is 1.6 MPa and 60o C and outlet condition is saturated temperature 30o C.
Question 8 Not yet answered Marked out of 100,00 Flag question A current of \( 10 \mathrm{~A} \) passes through a resistor, across which the voltage is \( 220 \mathrm{~V} \). The power dissipated is (A) \( 2,2 \mathrm{~kJ} \) (B) \( 0,045 \mathrm{AN} \) (C) \( 2,2 \mathrm{kWh} \) (D) \( 2,2ā¦
the condenser. \( (9.54 ; 9.54 \mathrm{~kW} ; 10.54 \mathrm{~kW}) \) An ammonia vapour-compression refrigerator operates between an evaporator pressure of 2.077 bar and a condenser pressure of 12.37 bar. The following cycles are to be compared; in each case there is no undercooling in theā¦
Consider the single link with flexible joint example in the lecture. Assume that this time there is one more rigid element connected between the motor and the rod. Therefore, this system involves three rigid bodies connected in series via two springs: In this assignment, you will make aā¦
FORCE SYSTEM IN SPACE A) EQUILIBRIUM OF CONCURRENT COPLANAR FORCE SYSTEM 1. A slender rod \( B C \) of lemgth ' \( L \) ' and weight ' \( W \) ' is held by two cables as shown in (Fig. 1) Knowing that cable \( A B \) is horizontal and the rod forms an angle of \( 40^{\circ} \) with theā¦
1.A \( 25 \mathrm{~N} \) force is applied to a \( 30 \mathrm{~kg} \) object to change its velocity from \( 9 \mathrm{~m} / \mathrm{s} \) to \( 3 \mathrm{~m} / \mathrm{s} \). What is the given impulse experienced by the object in \( N \cdot s \) ?
What is the heat required to convert 1.7 kg ice at -19.8 Ā°C into water at 0Ā°C
determine the bending strain energy in the beam
9:15 PM \( 3 G \) 0.00 \( 44 \% \) +234 \( 90325581 \ldots \) 4 minutes ago DEPARTMENT OF PHYSICS, PHY 105: INTRODUCTION TO MECH. ĀæPROP. OF MATTER FIRST SEMESTER EXAMINATIONS, 2019/2020 ACADEMIC SESSION. TIME ALLOWED: 2 HRS INSTRUCTIONS: ANSWER FOUR (4) QUESTIONS ONLY, AT LEAST ONE (1) QUESTIONā¦
Question 30 ? Revisit Later Two charges of magnitude each of \( 5 \mu \mathrm{C} \) and \( 10 \mu \mathrm{C} \) separated by distance of \( 1 \mathrm{~m} \) from each other, magnitude of force between the charges is.
DATE: 6. A GAS FLOWS THROUGH A SQYARE CONDUIT. AT ONE POINT ALONGTHE CONDIIT, THE CONDUT SIDES ARE \( 0.1 \mathrm{~m} \), the VELOCITY \( 157.55 \mathrm{~m} / \mathrm{s} \), ANDTHE GAS MASS DENSITY IS \( 1.09 \mathrm{~kg} / \mathrm{m}^{3} \). AT THE SECOND POINT, THE CONDIT SIDES ARE \( 0.250ā¦
3. AT A SUMMIT IN A 12 INCHES PIPE LINE IN WHICH 6.0 CFS OF WATER IS FLOWING THE ELAVATION ABOVE DATUM IS 30 FT AND THE TOTAL HEAD IS 15 FT. COMPUTE THE ABSOLUTE PRESSURE IN PIPE
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word box below. \begin{tabular}{|l|l|} \hline SEA BREEZE & \multicolumn{1}{|c|}{ LAND BREEZE } \\ \hline & \\ \hline & \\ \hline & \\ \hline & \\ \hline & \\ \hline & \\ \hline \end{tabular} Module 10: Land and Sea Breeze Science 7 Quarter 4 \begin{tabular}{|l|l|} \hline Cool air sink on landā¦
retarding force on the car.
How much moment (or torque) is produced about point \( \mathrm{O} \) by the wrench in the situation below?
please answer
please explain
How does one measure mass?
Dow does one measure if something well float in water?
please explain
Calculate the resultant moment of a force about the axis of totation of poist \( A, B, C \), and \( D \) in the figure below
4. A ray of light travelling in air is incident almost along \( y \)-axis on medium of variable refractive index at the origin. The refractive index of the medium changes according to the relation \( \mu=1+x^{2} \). What is the light ray vector at the point where the \( \mathrm{x} \) coordinateā¦
Calculate the resultant froce doout the axis of notation of point \( A, B, C, D \) as in the figure belows
4. De manera individual realiza las siguientes actividades. Halla los primeros cuatro tƩrminos de las sucesiones. a) \( n+1 \) b) \( 6 n \) c) \( 3 n-2 \) d) \( 2(n+1) \) e) \( 3(n-1) \)
What is the index of refraction of the plastic if a ray is refracted as in the figure?
2. A plane starting at rest at one end of a runway undergoes a constant acceleration of \( 4.8 \mathrm{~m} / \mathrm{s}^{2} \) for \( 15 \mathrm{~s} \) before takeoff. How fast is the plane at takeoff? How long must the runway be for the plane to be able to takeoff?
A 0.050 kg bullet traveling 50m/s horizontally strikes and sticks to a 0.75 kg stationary block that is on a horizontal surface with a kinetic friction coefficient of 0.40. How far do the block and bullet slide before coming to a stop?
The equal masses in the figure oscillate in the vertical direction. Show that the frequencies of the normal modes of oscillation are given by omega ^ 2 = (3 plus/minus sqrt(5)) * s/(2m)
6. (10') A man is running with low speed, which one is the shape when he moves with high speed? Please explain why. Low speed High speed
5. (10') Monochromatic light from a distant source is incident on a slit 0.765 \( \mathrm{mm} \) wide. On a screen \( 2.05 \mathrm{~m} \) away, the distance from the central maximum of the diffraction pattern to the first minimum is measured to be \( 1.51 \mathrm{~mm} \). Calculate theā¦
A ray of light traveling through air is incident on a smooth surface of water at an angle of 30Ā° to the normal. Calculate the angle of refraction for the ray as it enters the water.
What is the difference between neap tides and spring tides? Draw diagrams of the relative positions of the Earth, Sun and Moon to illustrate both scenarios.
4.(15') Herring fish have a brilliant silvery appearance that camouflages them while they are swimming in a sunlit ocean. The silveriness is due to platelets attached to the surfaces of these fish. Each platelet is made up of several alternating layers of crystalline guanine \( (n=1.80) \) andā¦
8. (10')Transverse waves on a string have wave speed \( 8.00 \mathrm{~m} / \mathrm{s} \), amplitude \( 0.0700 \mathrm{~m} \), and wavelength \( 0.320 \mathrm{~m} \). The waves travel in the \( +x \)-direction, and at \( t=0 \) the \( x=0 \) end of the string has its maximum upwardā¦
To launch a spacecraft from Earth to an outer planet such as Mars using the least amount of fuel possible, first consider that the spacecraft is already in orbit around the Sun (on Earthās orbit) as it sits on the launch pad. The spacecraftās existing orbit must simply be adjusted to takeā¦
A 0.75 kg block slides with velocity uniform down a 20Ā° incline. a) How much work is done by the friction force? on the block while sliding the length full plan? b) How much net work is done about the block?
What energy is required to convert a 1.0 g cube of ice at -30.0 oC to steam at 120.0 oC ?. Assume: Specific heat of water: 4.19x103 J/kg0C, Specific heat of ice: 2090.0 J/kg0C, Specific heat of steam: 2.01x103 J/kg0C, Latent heat of vaporisation of water: 2.26x106 J/kg, Latentā¦
In the case of the frictionless pulley pictured below, both blocks weight 20 kg. If an extra force F is applied to one of the blocks as shown, find the tension in the rope. Assume g = 9.81 m/s2.
A car has initial velocity 10.0 m/s and moves with a constant acceleration of -2.0 m/s2. What is the time at which the car stops instantaneously ?.
the is smallest at point \( A \) and largestat point \( E^{\text {" }} \) Section 2: Hill Design 2. Click/tap on the Bumps tab at the top of the Interactive. Then drag the grey circles to modify the track so that it looks like the track design at the right Pay attention to the background gridā¦
Uraian 1. Arya berangkat dari Jakarta menuju bandung pada pukul 07.00 menggunakan sepeda motor dengan kecepatan ratarata \( 40 \mathrm{~km} / \mathrm{jam} \). Melalui jalan yang sama, Jeksen berangkat dari Jakarta menuju Bandung pada pukul 07.30 menggunakan mobil dengan kecepatan rata-rata \(ā¦
Parallel the development in the text for the land required for corn ethanol if it is self-sufficient in the case for EROEI of 1.5:1ānear the optimistic end of the range. How much larger is this than the area now devoted to corn, and how does it compare to total arable land in the U.S.?
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A 5.71 kg ball moving initially at 10.8 m/s hits a 6.99 kg ball at rest, in a linear elastic collision. What is the speed of both balls?
A 17.5 gram bullet initially moving at a speed of 229 m/s hits a 1.15 kg block and comes out the back of the block with a speed of 76.4 m/s. How fast is the block moving after the bullet leaves it?
If a 63.8 gram tennis ball approaches a player with an initial speed of 23.2 m/s and she returns it with a speed of 29.0 m/s, what impulse was given to the tennis ball?
why?
please answer
A thin uniform rod (length 1 m mass 2 kg ) is pivoted about a horizontal frictionless pin through one of its ends. The moment of inertia of the rod through this axis is 1/3 m l^2 The rod is released when it is below the horizontal. What is the angular acceleration of the rod at the instantā¦
Air is flowing over a flat plate at a velocity of 7 m/s with a temperature of 20 ļ°C. The plate has a width of 2 m and a length of 8 m with a temperature of 140 ļ°C. Determine the rate of heat transfer from the plate if the air flows along the 8 m side. The average temperature for the film isā¦
Consider the iron plate that has a thickness L. On the left side of the plate a constant heat flux is applied with q (W/m3). On the right side there is fluid flow with a temperature of( T infinite). Find T1 and T2 given the data below. L, cm=2 k, W/m/C = 20 q, W/m^2 = 1*10^5 (Tā¦
Data: Īø1 = 32.7 Īø2 Īø2 = 141.1 A = 3.6 cm B = 6.4 cm x component of vector a is 3.03 cm and y component of vector a is 1.94, the x-component of vector B is approximately -5.03 cm (Figure Included Here) With the diagram and the above data answer these questions: what is the yā¦
What is the heat required to convert 1.7 kg ice at -19.8 Ā°C into water at 0Ā°C
please answer
please explain
please explain
A 0.050 kg bullet traveling 50m/s horizontally strikes and sticks to a 0.75 kg stationary block that is on a horizontal surface with a kinetic friction coefficient of 0.40. How far do the block and bullet slide before coming to a stop?
What is the difference between neap tides and spring tides? Draw diagrams of the relative positions of the Earth, Sun and Moon to illustrate both scenarios.
A 0.75 kg block slides with velocity uniform down a 20Ā° incline. a) How much work is done by the friction force? on the block while sliding the length full plan? b) How much net work is done about the block?
What energy is required to convert a 1.0 g cube of ice at -30.0 oC to steam at 120.0 oC ?. Assume: Specific heat of water: 4.19x103 J/kg0C, Specific heat of ice: 2090.0 J/kg0C, Specific heat of steam: 2.01x103 J/kg0C, Latent heat of vaporisation of water: 2.26x106 J/kg, Latentā¦
In the case of the frictionless pulley pictured below, both blocks weight 20 kg. If an extra force F is applied to one of the blocks as shown, find the tension in the rope. Assume g = 9.81 m/s2.
A car has initial velocity 10.0 m/s and moves with a constant acceleration of -2.0 m/s2. What is the time at which the car stops instantaneously ?.