Basic Physics Questions and Answers

Gravitational force on the Moon is only 1 6 that of the graviational force on Earth The weight of a 10 kg object on the moon would be The weight of the object on Earth would be The mass of the object on the moon would be

The earth rotates through one complete revolution every 24 hours Since the axis of rotation is perpendicular to the equator you can think of a person standing on the equator as standing on the edge of a disc that is rotating through one complete revolution every 24 hours Find the angular and linear velocity of a person standing on the equator The radius of earth is approximately 4000 miles 3 V 11 rad hr Preview mi hr Preview

A force of 175 pounds makes an angle of 82 11 with a second force The resultant of the two forces makes an angle of 37 5 to the first force Find the magnitudes of the second force and of the resultant The second force has a magnitude of 149 pounds Round to the nearest integer The resultant force has a magnitude of pounds 82 11 37 5 175 lb B

Force X has a magnitude of 1230 pounds and Force Y has a magnitude of 1540 pounds They act on a single point at an angle of 15 to each other Find the magnitude of the equilibrant and the angle between the equilibrant and 1230 pound force What is the magnitude of the equilibrant pounds Round to the nearest tenth CHE

Suppose the following table gives the voltage across the capacitor for the specified times Assume as suggested by the data that the voltage increases by smaller amounts for the same amount of time later in its charging than earlier in its charging t seconds f t Volts 3 96 17 68 3 98 17 95 4 00 4 02 4 04 18 21 18 45 18 67 4 06 18 87 Find the best underestimate possible from this data for the instantaneous rate at which the voltage across capacitor is increasing 4 seconds after it started charging in Volts per second

Suppose a business purchases equipment for 17 500 and depreciates it over 5 years with the straight line method until it reaches its salvage value of 2500 see the figure below Assuming that the depreciation can be for any part of a year answer the questions to the right A Dollars 20 000 17 500 15 000 10 000 5000 0 14 500 12 11 500 8500 5500 4 2500 6 Years a Write an equation that represents the depreciated value V as a function of the years t V 17500 3000t Do not factor b Write an inequality using t as the variable that indicates that the depreciated value V of the equipment is less than 8500 Do not simplify

A motorboat sets out in the direction N 67 36 E The speed of the boat in still water is 31 8 mph If the current is flowing directly south and the actual direction of the motorboat is due east find the speed of the current and the actual speed of the motorboat The speed of the current is mph Type an integer or decimal rounded to the nearest tenth as needed EXIS

A car driving at 25 m s travels 318 m How long does it take O 290 S 13 s 7900 s 0 079 s

Under what circumstances does total internal reflection occur O O O Light moves from a faster to a slower medium at less than the critical angle Light moves from a faster to a slower medium at greater than the critical angle Light moves from a slower to a faster medium at less than the critical angle O Light moves from a slower to a faster medium at greater than the critical angle

It seemed to me then that I experienced a sensation not altogether physical ye almost so as of burning heat and as if the letter was not of red cloth but red hc iron I shuddered and involuntarily let it fall upon the floor Which among the following ideas is explicitly stated in the given lines Letter A is used as a means to humiliate sinner The narrator is made to feel guilty for her sin Letter A is imprinted on the narrator s body

A ship leaves port on a bearing of 33 0 and travels 10 9 mi The ship then turns due east and travels 4 3 mi How far is the ship from port and what is its bearing from port The ship is mi from the port Round to the nearest tenth of a mile as needed

Two loudspeakers next to each other produce sound waves as shown How are these waves expected to interfere and for what reason AMA O destructively since they are out of phase O constructively because they have the same amplitude O constructively since they are out of phase O destructively because they have the same amplitude

13 If the earnest money is held by a title company and one party defaults who must sign the release of funds to the injured party a only the seller b the title company O c only the buyer d both buyer and seller

What conditions are needed to create wave interference O O two sets of waves travelling through different regions of space two sets of waves coming together at a common point O coherent waves all of these

Objects of masses m 4 00 kg and m 9 00 kg are connected by a light string that passes over a frictionless pulley as in the figure below The object m is held at rest on the floor and my rests on a fixed incline of 0 43 00 The objects are released from rest and m slides 1 20 m down the slope of the incline in 3 50 s a Determine the acceleration of each object Enter the magnitude only m s b Determine the tension in the string Enter the magnitude only c Determine the coefficient of kinetic friction between my and the incline

An 88 2 kilogram block rests on an inclined plane A string that passes over a pulley connects this block to another block whose mass is 88 2 kg The pulley has a mass of 5 24 kg and a radius of 0 195 m The coefficient of kinetic friction between the block and the plane is 0 325 a Draw and label a free body diagram of all the forces acting on each block b Find the acceleration of the blocks 88 2 kg 35 0 195 m 5 24 kg 88 2 kg

Water waves splash under a dock at regular intervals The time that elapses between splashes is called the Ospecular O incidence O period

4 A mechanic s lien is both a common law voluntary b common law involuntary c statutory voluntary d statutory involuntary and

A boat sails on a bearing of 76 for 129 miles and then turns and sails 201 miles on a bearing of 192 Find the distance of the boat from its starting point The distance is miles Round to the nearest integer as needed

Red light of wavelength 600 nm moves from vacuum to a medium with an index of refraction of 1 50 What is the wavelength of the light in the medium O 600 nm O900 nm 400 nm 150 nm

14 In Utah it has recently become common practice for the earnest money deposits on behalf of the brokerage a lender b state treasury c escrow agent d title companies to receiv

As straight water waves pass through an opening and spread out in circular wave fronts the waves undergo O reflection O dispersion O refraction diffraction

Two waves of the same amplitude and wavelength meet They interfere destructively What is a possible phase difference between the waves Oo 02 0 14 102

heat 37 Electromagnetic waves released by material objects as heat from an area of high heat to the cooler surrounding environment is an example of A Convective B Conductive C Radiant D Evaporative

Given the following fundamental frequencies f0 calculate the period in units of ms of one vocal fold vibratory c 125 Hz a 8 00 ms V 310 Hz b 4 85 ms 220 Hz c 3 23 ms 206 Hz d 4 55 ms

Three atoms with atomic radii of 4 0 5 0 and 5 3 are arranged as in the figure Find the measure of the angle at the center of atom B inside the triangle The measure of the angle is Do not round until the final answer Then round to the nearest degree as needed CLE 4 0 C 5 0 B 25 A 5 3

A loudspeaker produces sound waves 3 50 m long at a frequency of 100 Hz What is the speed of the waves 3 50 m s O 0 0350 m s 350 m s 28 6 m s

Simple Harmonic Motion cont Frequency and period are inversely related f 1 p and p 1 f Therefore if we know one variable we can calculate the other variable 900 800 700 600 500 400 300 200 100 Period ms Sine wave Examples 1 2 If p 10 ms what is f If p 1 ms what is f

You have seen arguments and evidence for both the particle model of light as well as for the wave model of matter In this assignment you will create a graphic organizer outlining the key points of each side In order to demonstrate your understanding of the basic concepts of quantum mechanics you will need to support your points with experimental evidence that supports each side of the argument 4 Instructions Your task is to summarize each side of the argument and communicate your findings in the form of a graphic organizer Be sure to Use the appropriate terminology related to quantum mechanics Outline problems related to the photoelectric effect Compton effect and de Broglie s matter waves Compare and contrast the different models Support your argument using data for example from a photoelectric effect simulation to support scientific theory

In 2011 Belgian scientists used lasers to measure Usain Bolt s performance in the different stages of a 100 meter race held in September that year They found that 67 13 meters into the race Bolt reached a top speed of 43 99 kilometers per hour 27 33 miles per hour Using dimensional analysis what was his speed in units of meters per second Hint Convert the numerator first then convert the denominator O a 0 122 m s O b 122 1 m s O c 1 221 m s O d 12 21 m s

Calculate the period p in units of ms if the frequency of a pure tone 2000 Hz O a 50 ms O b 0 5 ms O c 5 0 ms Od 0 05 ms

If a beam of light strikes a surface exactly perpendicular to the surface then the angle of incidence is degrees 060 Oo 090 45

The circuit in the figure The two capacitors on the left and right both have same capacitance of C 40 F The capacitors in the top two branches have capacitances of 6 00 uF and C 30 F 6 00 F 9 00 V C a What is the equivalent capacitance in F of all the capacitors in the entire circuit b What is the charge on each capacitor

In which situation would you expect to see the greatest diffraction a water waves of wavelength 2 0 m striking an opening 0 50 m in width Ob water waves of wavelength 4 0 m striking an opening 0 50 m in width Oc water waves of wavelength 4 0 m striking an opening 0 25 m in width O d all of these will show the same amount of diffraction

2 Which of the following is not sufficient to file for notice of a job O a Notice of commencement b Notice of preconstruction service c Preliminary notice d Notice of work

For each period in units of ms calculate the frequency Hz using whole numbers no decimal points Hint Can you calculate frequency directly from units of ms Remember to use dimensional analysis a 20 ms Hz b 1 ms c 0 33 ms d 0 125 ms Hz Hz Hz

Which statement is true concerning the interference pattern from a double slit experiment The spacing of the bright fringes is twice that of the dark fringes The spacing of the dark fringes is twice that of the bright fringes The dark fringes increase spacing farther from the centreline The dark fringes appear equally spaced

A small plastic IS by a string of length L 20 cm in a uniform electric field as shown in the figure below If the ball is in equilibrium when the string makes a 0 16 5 angle with the vertical as indicated what is the net charge on the ball HC 8 0 E 1 00 x 10 N C L m

What is the log base 10 of the following powers of 10 V 1 000 1 1 10 000 100 000 100 10 a 2 b 3 C 4 d 5

What is the term for the bending of a wave front as it passes an obstacle O reflection O interference O diffraction refraction

1 All of the following must occur before filing a Notice of Completion except a Certificate of occupancy issued b Completion of substantial work c Payment tendered d Final inspection

QUESTION 1 What is the intensity of a sound if the measured pressure was equal to 20 dynes cm 2 Hint Which equation will you use to calculate intensity in units of sound pressure level Answer a dB SPL

4 Which of the following describes subagency a A client chooses one specifi agent to represent him her b A client chooses a broker to represent him her c A client chooses all agents in the office to represent him her d A client chooses limited agency with an agent

A certain orthodontist uses a wire brace to align a patient s crooked tooth as in the figure below The tension in the wire is adjusted to have a magnitude of 12 12 N Find the magnitude of the net force exerted by the wire on the crooked tooth N 000000

Which of the following is a run on sentence A My teacher told me to redo the assignment the assignment had too many errors B My teacher told me to redo the assignment The assignment had too many errors C My teacher told me to redo the assignment the assignment had too many errors D My teacher told me to redo the assignment for the assignment had too many errors

A 60 kg man standing on a scale in an elevator notes that as the elevator rises the scale reads 821 N What is the acceleration of the elevator m s upward

Three different forces act on an object They are F 2 3 F 2 5 F 8 5 Find the net force Fnet on the object the sum of the forces Fnet Find what fourth force F4 would need to be added so the object feels no force that is so Fue FA Te Question Heln Merrano fortructor

Assume the three blocks m 1 0 kg m 2 0 kg and m3 4 0 kg portrayed in the figure below move on a frictionless surface and a force F 36 N acts as shown on the 4 0 kg block MIL m a Determine the acceleration given this system m s to the right b Determine the tension in the cord connecting the 4 0 kg and the 1 0 kg blocks c Determine the force exerted by the 1 0 kg block on the 2 0 kg block

b What type of star is it c What color might you expect it to have 4 a Which star is the coolest b What type of star is it c What color might you expect it to have 5 Find Sirius B on the H R diagram a What type of star is it b Why is it so dim 6 a Which star is furthest from us b Why does it appear so bright in our sky 7 Why does Alpha Centauri A appear so bright in our sky 8 Apply what you have learned to the following hypothetical stars a If Star A has the same temperature as the Sun but a lower absolute magnitude brighter then Star A must be smaller than larger than the same size as the Sun b If Star B has the same absolute magnitude as Mimosa but is cooler then Star B must be smaller than larger than the same size as Mimosa 9 Look at the table of nearest stars List the stars that are visible with the unaided eye 14 Name 1 Sun Sol 2 Sirius A 3 Canopus 4 Arcturus 5 Alpha Centauri A 6 Vega 7 Rigel 8 Procyon A 9 Achernar 10 Betelgeuse 11 Capella B 12 Altair 13 Aldebaran 14 Capella A 15 Antares 16 Spica 17 Pollux 18 Fomalhaut 19 Deneb 20 Mimosa 21 Regulus Automatic Zoon Table 1 The Brightest Stars in the Sky Distance Apparent light years Magnitude 26 74 1 43 0 72 0 04 0 01 0 03 0 13 0 37 8 6 310 37 4 4 25 770 11 140 640 42 17 65 42 600 260 34 25 2 600 350 79 0 50 0 58 0 76 0 77 0 85 0 91 1 09 1 12 1 15 1 16 1 25 1 30 1 35 Absolute Temperatur Magnitude Kelvin 5 80 4 8 1 5 5 6 0 3 4 4 0 6 7 9 2 7 2 7 5 9 0 2 2 2 0 6 0 4 5 2 3 5 Vie 1 1 1 7 8 4 3 9 0 5 9 900 7 400 4 300 5 8 C 9 600 11 000 6 500 14 500 3 500 5 700 8 100 3 900 4 900 3 500 22 400 4 900 8 600 8 500 27 000 12 500

A freight train has a mass of 1 8 x 107 kg If the locomotive can exert a constant pull of 7 6 x 105 N how long does it take to increase the speed of the train from rest to 68 km h min