Basic Physics Questions and Answers

what is the momentum of a 0 2 kg ball thrown upward with a velocity of 30 m s a C d 6 kg m s upward 6 kg m s downward 1 5 kg m s upward 1 5 kg m s downward

The diagram below represents the electric field in the region of two small charged spheres A and B What is the sign of the net charge on A and B A O A is positive and B is negative OA is positive and B is positive O A is negative and B is positive O A is negative and B is negative B

100 g of water is mixed to 150 g of alcohol 790 kg m Calculate a the Specific Gravity RD of the mixture b the specific volume of the solution Ans 0 862 1 2 cm3 g

Fusion probability is greatly enhanced when appropriate nuclei are brought close together but mutual Coulomb repulsion must be overcome This can be done using the kinetic energy of high temperature gas ions or by accelerating the nuclei toward one another a Calculate the potential energy of two singly charged nuclei separated by 1 75 x 10 12m by finding the voltage of one at that distance and multiplying by the charge of the other b At what temperature will atoms of a gas have an average kinetic energy equal to this needed electrical potential energy

Sedimentary Rocks A D 11 F Igneous Rocks intrusion K H Baked Zone Oldest Metamorphic Rocks G Unconformities What is the type of the Unconformity I answer only with 2 words H E F C

What relative dating principle states that in a sequence of sedimentary rocks unless overturned the oldest beds are at the bottom and the youngest beds are at the top O assimilation O original horizontality O inclusions O superposition O lateral continuity

Sedimentary Rocks A D E Igneous Rocks intrusion K H Baked Zone Oldest Metamorphic Rocks G Unconformities What type of unconformity is shown by Event J PL H G E F D

A piece of aluminum has density 2 70 g cm and mass 775 g The aluminum is submerged in a container of oil oil s density 0 650 g cm How much oil does the metal displace 309 cm O 232 cm 0 1125 cm O 287 cm

If a cup of coffee has temperature 90 C in a room where the ambient air temperature is 20 C then according to Newton s Law of Cooling the temperature of the coffee after t minutes is T t 20 70e t 49 What is the average temperature of the coffee during the first 12 minutes average temp C

It is impossible for a film not to have mise en scene Truc False

Problem 14 Please Show Work 30 points The figure below shows an electron passing between two charged metal plates that create a 100 N C vertical electric field perpendicular to the electron s original horizontal velocity These can be used to change the electron s direction such as in an oscilloscope The initial speed of the electron is 3 00x10 m s and the horizontal distance it travels in the uniform field is 4 00 cm a What is its vertical deflection b What is the vertical component of its final velocity c At what angle does it exit Neglect any edge effects YA X Vo e V1

A long cylindrical conductor of radius R carries a current I as shown below left The current density J nowever is not uniform over the cross section of the conductor but is a function of the radius according to J br where b is a constant Find an expression for the magnetic field B a at a distance r R and b at a distance r R measured from the axis I 12 71 R

Patient Hillary Doe is seen at University Hospital for surgery Later Hillary Doe s follow up is done at Dr Smith s office Both the hospital and the doctor s office can share electronic information about the patient s treatment This sharing of information is done via O a HL7 b CMS c IOS d OSI

If this standing wave is 48 8 meters long from end to end what is the wavelength

Problem 13 Please Show Work 15 points Calculate the initial from rest acceleration of a proton in a 6 25 106 N C electric field such as created by a research Van de Graaff

If the current from the battery is 0 8A what would be the current of the first light bulb

Convert the ff 75 kPaa to mmHggage 12 5 psia to mmHgvaac 24 in Hgvac to mmHgabs and kPaa 6 5 psig to MPaa

A 11 yard tall object ds 9 yards away casts a shadow on the ground 14 yd 9 yd 33 11 yd shadow 14 yard tall pote a light Q At this moment how long is the shadow Give your answer as a decimal number with units yards Part 2 of 2 Suppose the pole with the light is being raised so that its height increases at a rate of 3 yd sec and at the same time the object casting the shadow is being raised so its height increases at a rate of 4 yd sec At what instantaneous rate is the shadow changing length at this moment Give your answer as a decimal number with units

One major difference between Trip to the Moon and Rope is that only Trip to the Moon used painted backgrounds True False

8 Object A is moving due east while object B is moving due north They collide and stick together in a completely inelastic collision Momentum is conserved Object A has a mass of mA 18 0 kg and an initial velocity of VOA 8 15 m s due east Object B however has a mass of mB 29 5 kg and an initial velocity of VOB 5 15 m s due north Find the magnitude of the final velocity of the two object system after the collision m s

11 A cue ball traveling at 0 80 m s hits the stationary 8 ball which moves off with a speed of 0 27 m s at an angle of 38 relative to the cue ball s initial direction Assuming that the balls have equal masses and the collision is inelastic what will be the speed of the cue ball m s

When discussing film style one indicator might be recurring visual and narrative patterns across several films by the same director O True O False

2D animation displays the height and depth of the objects and characters on the screen True False 4

822 V2 11 A cue ball traveling at 0 80 m s hits the stationary 8 ball which moves off with a speed of 0 27 m s at an angle of 38 relative to the cue ball s initial direction Assuming that the balls have equal masses and the collision is inelastic what will be the speed of the cue ball 0217 m s

On average a textbook author makes 2 word processing errors per page on the first draft of her textbook a What is the probability that on the next page she will make 3 or more errors b What is the probability that a randomly selected page is error free Click here to view the table of Poisson probability sums a The probability that a page has at least 3 errors is Round to four decimal places as needed

A taxicab moves 5 00 km north 5 00 km due east and another 12 00 km at 30 north of west What is the Displacement color magnitude of the taxi s displacement start to finish Ry vector a 22 km d ve 612 3 km C 18 9 km d 0 R Ry ay 2 Ax 0 ex 5 cx 12 cas 30 10 4 cys 12 Sin 30 6 Ay 5 Byso Rx 5 4

Which statement accurately explains the theme most exemplified in this passage O Good leaders treat everyone the same O Kindness inspires others to be kind Strangers cannot always be trusted Ingratitude leads to unhappiness

1 The period p of a pendulum or the time it takes for the pendulum to make one complete swing varies directly as the square root of the length L of the pendulum If the period of a pendulum is 1 3 seconds when the length is 2 ft find the period in seconds when the length is 6 ft 2 The current i in a wire varies directly as the voltage v and inversely as the resistance r If the current is 27 5 amps when the voltage is 110 volts and the resistance is 4 ohms find the current in amps when the voltage is 150 volts and the resistance is 8 ohms

i 12 You want to store 1 000 J of energy in an ideal spring when it is compressed by only 2 5 cm What should be the force constant spring constant of this spring U Font Family M AA A 3 3

A 2 0 kg grapefruit is tossed at a speed of 5 0 m s from a roof that is 6 0 m above the ground What is the kinetic energy of the grapefruit as it is released 6 0 m level a 25 J Ob 12 5 J c 50 J d 10 J

1 A boy pulls a 29 0 kg box with a 210 N force at 37 above a horizontal surface If the coefficient of kinetic friction between the box and the horizontal surface is 0 27 and the box is pulled a distance of 26 0 m what is the work done by the friction force on the box

When light strikes a thin film some of it transmits and some of it reflects To determine whether destructive interference occurs between light rays reflected from the top and bottom surfaces of the film first you need to determine the phase reversal status of both rays If they are O in phase then you need to change status by ensuring the path difference is a half number multiple of the wavelength out of phase then you need to maintain status by ensuring the path difference is a half number multiple of the wavelength out of phase then you need to change status by ensuring the path difference is a whole number multiple of the wavelength O in phase then you need to maintain status by ensuring the path difference is a half number multiple of the wavelength

A myosin molecule walks along a one dimensional actin track inside of a cell The myosin molecule begins at x 1 4 m and has the following displacements Ax 4 2 m Ax2 4 6 m Ax3 1 7 m What is the final position of the myosin molecule Give your answer in units of m

Light of wavelength 417 nm passes through a 3 9x101 mm wide single slit and produces an interference pattern on a screen that is 1 6 m away What is the distance between adjacent nodal lines 1 5x10 3 cm 1 7 10 cm 1 5x10 cm 1 7 10 m 2 6 cm 0 17 cm

Which of the following would describe a perfectly elastic collision between two bodies O Momentum is transferred from one body to another but no kinetic energy is transferred from one body to another Total kinetic energy is the same after the collision as before but total momentum is not the same after the collision as before Total kinetic energy is the same after the collision as before and the total momentum is the same after the collision as before Total kinetic energy is not the same after the collision as before but total momentum is the same after the collision as before Total momentum is the same after the collision as before and there is no deformation of either body during the collision

An electron that travels through a conductor in a laboratory at a speed of 0 790c What is the kinetic energy of the electron in the laboratory frame of reference 2 14 10 13 J 1 32 10 14 J 8 20 10 14 J 5 01 10 13 J

Which best contrasts sublimation and vaporization O Sublimation involves a change from a solid and vaporization involves a change from a liquid O Sublimation results in a gas and vaporization results in a liquid O Sublimation involves the absorption of heat and vaporization involves the release of heat O Sublimation involves the release of heat and vaporization involves the absorption of heat

What is the best description of a wave O a pulse that carries energy O a disturbance that moves matter a medium disturbed by a vibration O matter that is moved from one place to anothe

A kilowatt hour kWh is a unit of 1 energy O2 current 3 voltage 4 power 5 resistance

potential energy of a 2 2 10 kg vehicle located Note G 6 67 10 11 Nm kg O 14 1011 J O 1 4 104 J O 2 2 104 J O 2 2 10 2 J 201

When light strikes a soap bubble colours are frequently observed This effect is produced primarily by incandescent molecules diffuse reflection Othin film interference diffraction O absorption

You are part of a large group of identical people touring a research center where Planck s constant is 6 63x10 3 Js instead of 6 63x10 34 Js Each person in the group has a mass of 50 0 kg and walks at 1 3 m s What is your wavelength O 1 0 105 m 1 0 10 26 m 1 1 104 m 1 0 10 4 m

Note X magnetic field X O mass of the electron O speed of the electron X X X mass of an electron 9 1 10 31 kg charge on electron 1 6 10 19 C The magnitude of the magnetic force on the electron as it enters the magnetic field will not depend on the X X time spent in the magnetic field

Objects can be charged by 1 touching 2 friction 3 induction all of the above

Which of the following is the proper way to indicate an anti particle A triangle is placed in front of the particle symbol A vector arrow above the particle symbol The subscript a is placed behind the particle symbol icle sy A straight line or bar above the particle symbol

Electric charge is neither created nor destroyed but can be rearranged This statement is called 1 Law of Conservation of Charge 2 Law of Conservation of Energy 3 Coulomb s Law

18 The velocity v t of a particle as a function of time is given by v t 2 3 m s 4 1 m s t 6 2 m s t2 What is the average acceleration of the particle between t 1 0 s and t 2 0 s O 13 m s O 0 m s 15 m s O 15 m s O 13 m s

3 C bus pulls away from the pedestrian with an acceleration of 1 0 m s Which position time graph below would describe the motion of the pedestrian a the bus O d 7

The element lithium has an atomic number of 3 and an atomic mass of 7 The element carbon has an atomic number of 6 and an atomic mass of 12 How many more up quarks are present in the nucleus of an atom of carbon 4 09 0 10

Which of the following properties of light can be easily accounted for by the particle theory Light reflects at the same angle as it strikes a surface Light diffracts around corners or through small openings Light can be shown to undergo partial reflection partial refraction Light exhibits a two point source interference pattern