Basic Physics Questions and Answers

proton accelerates from rest in a uniform electric field of 606 N C At some later time its speed is 1 34 x 106 m s a Find the magnitude of the acceleration of the proton m s b How long does it take the proton to reach this speed HS c How far has it moved in that interval m d What is its kinetic energy at the later time

A researcher builds a parallel plate capacitor with adjustable spacing between the plates When the plates are at their initial separation the capacitance is 6 50 F a At this capacitance the capacitor is connected to a 18 00 V battery After fully charging how much energy in J is stored in the capacitor b The battery is then disconnected Without discharging the capacitor the researcher then doubles the separation between the plates At this point how much energy in J is stored in the capacitor J c Without changing this new separation between the plates the capacitor is discharged and then reconnected to the 18 00 V battery Now after fully charging how much energy in J is stored in the capacitor J

S Part A Answer all questions in this part Directions 1 35 For each statement or question choose the word or expression that of those given best completes the statement or answers the question Some questions may require the use of the 2006 Edition Reference Tables for Physical Setting Physics Record your answers on your separate answer sheet 1 Which combination correctly pairs a vector quantity with its corresponding unit 1 weight and kg 2 velocity and m s 3 speed and m s 4 acceleration and m s 2 A 12 0 kilogram cart is moving at a speed of 0 25 meter per second After the speed of the cart is tripled the inertia of the cart will be 1 unchanged 2 one third as great 3 three times greater 4 nine times greater 3 While taking off from an aircraft carrier a jet starting from rest accelerates uniformly to a final speed of 40 meters per second on a runway that is 70 meters long What is the magnitude of the acceleration of the jet 1 0 29 m s 2 0 57 m s 4 A 6 0 kilogram cart initially traveling at 4 0 meters per second east accelerates uniformly at 0 50 meter per second squared east for 3 0 seconds What is the speed of the cart at the end of this 3 0 second interval 1 1 5 m s 2 5 5 m s 3 1 8 m s2 4 11 m s sics June 18 3 3 0 m s 4 7 0 m s 5 A soccer ball is kicked into the air from level ground with an initial speed of 20 meters per second and returns to ground level At which angle above the horizontal should the ball be kicked in order for the ball to travel the greatest total horizontal distance Neglect friction 1 15 2 30 3 45 4 75 2 6 Starting from rest a car travels 18 meters as it accelerates uniformly for 3 0 seconds What is the magnitude of the car s acceleration 1 6 0 m s 2 2 0 m s 7 A ball is rolling horizontally at 3 00 meters per second as it leaves the edge of a tabletop 0 750 meter above the floor The ball lands on the floor 0 391 second after leaving the tabletop What is the magnitude of the ball s acceleration 0 200 second after it leaves the tabletop Neglect friction 1 1 96 m s 2 7 65 m s 3 3 0 m s 4 4 0 m s 8 A projectile with mass m is fired with initial horizontal velocity v from height h above level ground Which change would have resulted in a greater time of flight for the projectile Neglect friction 3 9 81 m 4 15 3 m s 1 decreasing the mass to m 2 2 decreasing the height to h 2 3 increasing the initial horizontal velocity to 20 4 increasing the height to 2h 1 2 2 Nos 2 880 Nes 9 A golf club hits a stationary 0 050 kilogram golf ball with an average force of 5 0 x 10 newtons accelerating the ball to a speed of 44 meters per second What is the magnitude of the impulse imparted to the ball by the golf club 1 0 025 N 2 5 0 N 3 1 1 x 104 Nos 4 2 2 x 105 N s 10 A tennis player s racket applies an average force of 200 newtons to a tennis ball for 0 025 second The average force exerted on the racket by the tennis ball is 3 200 N 4 80 0 N

A charge q 3 89 C is located at the center of a regular tetrahedron a four sided surface ds XP 9 a Find the magnitude of the total electric flux through the tetrahedron N m c b Find the magnitude of the electric flux through one face of the tetrahedron N m c

The figure below shows two small charged beads separated by a distance of d 1 50 cm The charges are q 11 5 n is at the midpoint between the two charges and point A is at the peak of an equilateral triangle with each side of length d as shown Assume the zero of electric potential is at infinity 9 d 60 0 B d 9 a What is the electric potential in kV at point A kV b What is the electric potential in kV at point B

a A 1 75 F capacitor and a 3 75 F capacitor are connected in series across a 7 50 V battery How much charge in C is stored on each capacitor 1 75 F capacitor 3 75 F capacitor HC C b The same two capacitors are disconnected and discharged They are then connected in parallel across the same battery How much charge in HC is stored on each capacitor now 1 75 F capacitor C 3 75 F capacitor C

1 Protons are located in the nucleus of the atom A proton has a No charge b A negative charge A positive and a negative charge d A positive charge 2 Neutrons are in the nucleus of the atom A neutron has a A positive charge No charge A negative charge d Twice as much positive charge as a proton 3 An electron is in a region outside the nucleus An electron a is larger than a proton and has no charge b Has less mass than a proton and has a negative charge e is smaller than a proton and has no charge d Has a positive charge 4 A hydrogen atom is made up of one proton and one electron The proton and electron stay near each other because a Positive and negative charges repel b Positive and positive charges repel c Positive and negative charges attract d Two negatives make a positive 5 The atomic number of an atom is a The mass of the atom b The number of protons added to the number of neutrons c The number of protons d Negatively charged

6 When a thermometer is heated the red liquid inside the thermometer moves up This is mainly because a The red liquid is thin b The molecules of the liquid move faster and get a little further apart c Hot liquid is lighter d The glass of the thermometer gets hot 7 When a thermometer is cooled the red liquid inside the thermometer moves down This is mainly because a Cold liquids sink b The glass of the thermometer gets cold c The molecules of the liquid move slower and get a little closer together d The red liquid is thick 8 When you heat a sample of a solid the particles that make up the solid a Get bigger b Loose mass c Move faster d Slow down 9 When you heat a sample of a solid the sample gets a little bigger This is mainly because a The particles move faster and get a little further apart b Heat helps the particles grow c Heating the sample makes it lighter d Heating helps the particles slide past each other 10 When you heat a sample of gas what happens to the particles that make up the gas a The particles move faster b The particles break apart c The particles get smaller d The particles become more dense

Caged Read the passage The free bird thinks of another breeze and the trade winds soft through the sighing trees and the fat worms waiting on a dawn bright lawn and he names the sky his own in the poem Check all that apply Olonging Osadness O relaxation exhaling O peacefulness breathing

A steel wire in a piano has a length of 0 720 m and a mass of 4 700 x 10 3 kg To what tension must this wire be stretched so that the fundamental vibration corresponds to middle C f 261 6 Hz on the chromatic musical scale N

1 Any sample of matter has mass and takes up space The main reason for this is because a All matter is heavy b Matter can be a gas c Matter is made up of tiny particles that have mass and take up space d The Earth is made of matter 2 Water drops stay together on wax paper and they don t break apart easily This is mainly because a Water molecules are small b Water molecules are in motion c Water molecules are attracted to each other d Water molecules are wet 3 When you bring two drops of water near each other and allow them to touch they combine immediately and become one drop This is mainly because a Water molecules are made of atoms b Water molecules are attracted to each other c Water molecules are magnetic d Water is a liquid 4 If you put food coloring in room temperature water the coloring spreads throughout the water The water causes the color to spread mainly because a Water molecules are warm b Water molecules are in motion c Water is more dense than food coloring d Food coloring molecules are small 5 Food coloring spreads out faster in hot water than in cold water This is mainly because a The water molecules in hot water move more quickly b The molecules in hot water are larger The food coloring molecules are small

Electrons are found the cof www ele Nevtrons and creas are attracted to one anothe the acumber of to the f feces of the same can have diffeces the extrems of an area of in regions around the nucleus called The the first one of an is closest to the c Theod na cova donderons are shared between two the electrons on the most energy level of an s are called electrons

A man enters a tall tower needing to know its height He notes that a long pendulum extends from the ceiling almost to the floor and that its period is 27 5 s a How tall is the tower m b If this pendulum is taken to the Moon where the free fall acceleration is 1 67 m s2 what is the period there S

This figure shows a sinusoidal wave that is traveling from left to right in the x direction Assume that it is described by a frequency of 47 3 cycles per second or hertz Hz M 5 20 cm a What is the wave s amplitude in cm cm b What is the wavelength in cm cm c Calculate the wave s period in s 8 29 cm S d Compute the speed of this wave in m s m s

A 3 0 meter stick moves at a speed of 0 90c relative to an observer The stick is aligned parallel to the direction of motion What is the observed length of the stick a 6 9 m b 4 2 m c 2 7 m d 1 3 m

Adding resistors in parallel decreased the total resistance and increased the total current drawn from the source is a If the total current drawn from the source were 0 3 amperes how much the magnitude of the current through the 502 bulb compared to the current through the 10 22 resistor b If a total of 1 2 amps were drawn from the source to operate six 10 Q resistors in parallel i How much current would flow through each resistor ii What is the equivalent resistance of the six 10 9 resistors in parallel

When a neutral metal sphere is charged by contact with a positively charged glass rod the sphere A gains protons B loses protons C loses electrons D gains electrons

Select the correct answer from each drop down menu Marjory works at a commercial bakery She is conducting an experiment to test the results of two yeast activators for making bread The Rapid Prove activator claims to increase the rise of dough by at least 30 The Quick Rise activator claims to increase the rise of dough by at least 26 Marjory and her team bake 60 loaves of bread 30 using the Rapid Prove activator and 30 using the Quick Rise activator After the loaves were baked Marjory evaluated the rise of the breads as compared to previous doughs with no activator used She reported that on average the rise of those made with the Rapid Prove activator increased by 25 and the rise of loaves made with the Quick Rise activator increased by 28 The Rapid Prove activator claim is The Quick Rise activator claim is The activator is more effective because the increase in rise was that of the other activator

As a positively charged rod is brought near to but not allowed to touch the knob of an uncharged electroscope the leaves will diverge because A negative charges are transferred from the electroscope to the rod B negative charges are attracted to the knob of the electroscope C positive charges are transferred from the roc to the electroscope D positive charges are repelled to the leaves o the

water molecules in cold room temperature and hot water Cold Wata Room Temperature Water Hot Water Thermometers have a very thin tube inside of them that stretches up from a round bulb which holds most of the liquid a Why does the red liquid move up the tube when a thermometer is heated When heated the molecules in the liquid inside the thermometer get a little further apart Because the liquid takes up more space the red line moves up in the tube MATERIA AMM b Why does the red liquid move down the tube when a thermometer is cooled When cooled the molecules in the liquid inside the thermometer get a little closer together Because the liquid takes up less space the red line moves down in the tube If two thermometers have different liquids in them the liquids can move to different heights in the thermometers even if they are measuring the same temperature Why does that happen

1 The three common states of matter are True or False 2 The particles of a liquid are attracted to one another but can t move past each other is the study of matter 3 4 True or False An increase in temperature increases molecular motion and increases the distance between atoms and molecules in solids liquids and gases 5 A in the speed of the molecules allows the attractions between molecules to bring them a little closer together increase decrease and G True or False Even when measuring the same temperature the liquids in different thermometers can move to different heights depending on the liquid inside of them 7 The molecules of the liquid inside the thermometer increase in speed when the thermometer is True or False 8 The atoms of a solid are very far apart and vibrate in fixed positions 9 Cooling a solid True or False Heating a gas completely stops all of its molecular motion 10 II True or False Air has mass the motion of the atoms Increase decrease 12 True or False The molecules of a gas are not very attracted to each other

9 Sphere A has a charge of 2 x 106 coulomb and is brought into contact with a similar sphere B which has a charge of 4 x 106 coulomb After it is separated from sphere B sphere A will have a charge of A 2 106 C B 2x 10 C C 6 106 C D 1 10 6 C

An object possessing an excess of 6 0 106 electrons has a net charge of magnitude A 5 5 10 24 C B 2 7 x 10 26 C C 9 6 x 10 13 C D 3 8 10 13 C

ball suspended on a string is attracted to a gram below a neutral pith positively charged rod Rod Pith Ball During contact with the rod the pith ball A gains electrons C loses electrons B gains protons D loses protons

1 Has to do with each part of the artwork working with the other parts to tie everything together Harmony Balance O Unity Dominance

20 0 F capacitor is charged to 205 C and en connected across the ends of a 4 80 mH ductor Part A Find the maximum current in the inductor Express your answer with the appropriate units imax Submit Part B 9 BE Submit Part C Value Request Answer At the instant the current in the inductor is maximal how much charge is on the capacitor plates Express your answer with the appropriate units HA Value Units Request Answer Units CONEC 380 Find the maximum potential across the capacitor Express your answer with the appropriate units

A long wire carrying a 5 75 A current reverses direction by means of two right angle bends as shown in the figure Figure 1 The part of the wire where the bend occurs is in a magnetic field of 0 666 T confined to the circular region of diameter 75 cm as shown Assume that I 5 75 A and d 44 0 cm Figure 1 of 1 Magnetic field region B 75 cm Part A Find the direction of the net force that the magnetic field exerts on this wire O The force is directed to the right The force is directed to the left The force is directed into the page The force is directed out of the page Submit Part B F Find the magnitude of the net force that the magnetic field exerts on this wire Express your answer in newtons Submit Request Answer VAE Provide Feedback Request Answer N A

According to the political perspective laws reflect Xaflect what society agrees is right and wrong who has the power to define certain behaviors the need to protect human relationships the importance of being in harmony with one s environment

To understand what causes crime we must first understand the criminal justice system the concept of deviant behavior why some behaviors are prohibited by the law why social order must be maintained

The conducting rod ab shown in Figure 1 makes frictionless contact with metal rails ca and db The apparatus is in a uniform magnetic field of 0 600 T perpendicular to the plane of the figure Figure x x ton B x a 7 1 of 1 50 0 cm Part C Submit Part D The current in the rod is zero Correct If the resistance of the circuit abcd is a constant 2 50 S2 find the d the right with a constant speed of 9 00 m s Submit F Correct Submit Previous Answers The force is directed to the right The force is directed to the left No force is needed Find the magnitude of the force mentioned in Part C Express your answer in newtons VAE S Previous Answers Request Answer N

A 30 0 cm x 60 0 cm rectangular circuit containing a 15 2 resistor is perpendicular to a uniform magnetic field that starts out at 2 45 T and steadily decreases at 0 26 T s See Figure 1 Figure TI 60 0 cm 1 of 1 Part A While this field is changing what does the ammeter read Express your answer in milliamperes I Submit VAZ Provide Feedback Request Answer PAR mA

An insulated circular ring of diameter 6 40 cm carries a I2 15 0 A current and is tangent to a very long straight insulated wire carrying I 8 50 A of current as shown in Figure 1 Figure 1 1 of 1 Part A Find the magnitude of the magnetic field at the center of the ring due to this combination of wires Express your answer in teslas B Submit Part B D VA O Submit Request Answer Find the direction of the magnetic field at the center of the ring due to this combination of wires The field is directed to the left O The field is directed the screen The field is directed to the right The field is directed out of the screen Provide Feedback 4 Request Answer T

metal bar 1 45 m long and having a resistance of 10 02 rests horizontally on conducting wires connecting it to the circuit shown in Figure 1 The bar is in a uniform horizontal 1 50 T magnetic field and is not attached to the wires in the circuit Figure 120 0 V 25 0 2 www 10 0 1 of 1 Part A What is the magnitude of the acceleration of the bar just after the switch is closed Express your answer in meters per second squared a Submit Part B VA Request Answer Submit O to the right O upward Oto the left downward What is the direction of the acceleration of the bar just after the switch is closed Request Answer Return to Assignment Provide Feedback m s

The conducting rod ab shown in Eigure 1 makes frictionless contact with metal rails ca and db The apparatus is in a uniform magnetic field of 0 600 T perpendicular to the plane of the figure Figure x X 1 of 1 50 0 cm Y Part A Find the magnitude of the emf induced in the rod when it is moving toward the right with a speed 9 00 m s Express your answer in volts VAXO E Submit Part B In what direction does the current flow in the rod Part C Request Answer The current in the rod is from a to b The current in the rod is from b to a The current in the rod is zero Previous Answers Correct V If the resistance of the circuit abod is a constant 2 50 2 find the direction of the force required to keep the rod moving to the right with a constant speed of 9 00 m s The force is directed to the right The force is directed to the left No force is needed

Learning Goal To apply Problem Solving Strategy 21 1 Faraday s law A closely wound rectangular coil of 80 turns has dimensions 25 0 cm by 40 0 cm The plane of the coil is rotated from a position in which it makes an angle of 37 0 degrees with a magnetic field of 1 10 T to a position perpendicular to the field The rotation takes 0 0600 s What is the average emf induced in the coil V Part B magnitude of the magnetic field Submit area of the coil E orientation of the coil with respect to the magnetic field direction SOLVE Now that you ve set up the problem choose appropriate equations and solve for your unknowns REFLECT Previous Answers Correct What is the magnitude of the average emf induced as the coil is rotated Express your answer in volts to three significant figures View Available Hint s Submit VAXO PMID V

A beam of protons is accelerated through a potential difference of 0 730 kV and then enters a uniform magnetic field traveling perpendicular to the field For related problem solving tips and strategies you may want to view a Video Tutor Solution of electron motion in a microwave oven Part A What magnitude of field is needed to bend these protons in a circular arc of diameter 1 80 m Express your answer in teslas B Submit Part B VAE Request Answer VAE What magnetic field would be needed to produce a path with the same diameter if the particles were electrons having same speed as the protons Express your answer in teslas T

A long straight wire containing a semicircular region of radius 0 95 m is placed in a uniform magnetic field of magnitude 2 15 T as shown in Eigure 1 The wire carries a current of 3 5 A Figure 3 00 m X X 095 m X 1 of 1 Part A What is the net magnetic force acting on the two straight sections of the wire Express your answer in newtons VAXO F Submit Part B B Submit Request Answer What magnetic field does the wire produce at the center of the hemisphere Express your answer in teslas VAX Provide Feedback Request Answer N T

A circular coil of 56 loops and diameter 12 0 cm is lying flat on a tabletop and carries a clockwise current of 1 70 A A magnetic field of 0 350 T directed to the north and at an angle of 45 0 from the vertical down through the coil and into the tabletop is turned on For related problem solving tips and strategies you may want to view a Video Tutor Solution of Torque on a circular coil Part A What is the torque on the coil Express your answer with the appropriate units T Part B 14 Submit Request Answer OO Value A north Which side of the coil north or south will tend to rise from the tabletop south Units

Large inductors have been proposed as energy storage devices For related problem solving tips and strategies you may want to view a Video Tutor Solution of Storing energy in an inductor Part A How much electrical energy is converted to light and thermal energy by a 220 W lightbulb in one day Express your answer in joules U Submit Part B AEO Request Answer VAX If the amount of energy calculated in part A is stored in an inductor in which the current is 72 0 A what is the inductance Express your answer in henrys J

A thin 54 0 cm long metal bar with mass 750 g rests on but is not attached to two metal supports in a uniform 0 460 T magnetic field as shown in Figure 1 A battery and a 22 0 2 resistor in series are connected to the supports Figure V R 1 of 1 Part A What is the largest terminal voltage the battery can have without breaking the circuit at the suppo Express your answer in volts Vmax Submit Provide Feedback OF AEO Request Answer V

22 Grandma Deanna and Grandpa Chris are painting the gutters of their house Grandma Deanna leans a 18 foot ladder up against the house which reaches 12 feet up the side of the house How far away from the house is the base of the ladder Round to one decimal place if necessary

In Chapter 6 you learned about the many important functions of protein in your body where it is found in foods as well as how much protein your body actually needs The Acceptable Macronutrient Distribution Range AMDR for protein is 10 35 of total calories Based on the AMDR for protein what is the range of calories from protein for someone who needs to consume 2200 kcal per day to maintain a healthy weight from What is this range in total grams of protein per day from kcal grams to to kcal grams

2 Differentiate LED and Photodiode 3 Zener diodes are commonly used in voltage regulators Why 4 Complete the following table

1 A rocket is launched off the ground in which the foot pump produces 20 N R 60 U on the rocket m 200g for 0 15 seconds Neglect air resistance Draw an F B D when the force is being applied to the rocket C 2 marks What is the acceleration of the rocket as it is launched A 2 marks How far does the rocket travel during the time the force is applied A 2 marks Draw an F B D when the force is no longer applied while traveling in the air C 2 marks At the end of the Force Applied what is the i Velocity of the rocket A 2 marks ii Velocity of the rocket horizontally A 2 mark iii Velocity of the rocket vertically A 2 mark

4 NONL 2 246 f x 02820 2 What are all of the x intercepts of the continuous function in the table 0 0 5 6 49 8 6970 0 40 08 14 0

4 Three point masses of 2 15 kg 4 15 kg and 5 75 kg are attached to a rod of negligible mass as shown 1 00 m 3 00 m 1 00 m 7 00 m 2 15 kg 4 15 kg 5 75 kg How far from the left end of the rod is the center of mass of this system located a 3 40 m b 6 80 m c 10 2 m d 13 6 m

5 Three identical capacitors are connected in delta to a 415 V 50 Hz 3 phase supply If the line current is 15 A determine the capacitance of each of the capacitors 6 A balanced A connected load with ZA 30L 30 0 is connected to a three phase three wire system conductors having impedances ZC 0 4 j 0 30 obtain the line to line voltage at the load

Which of the following systems of government can be defined as government by the people monarchy republic communism socialism

7 A beam of light is travelling through the air at an angle of 35 degrees to the normal The has an index of refraction of 1 000 What is the index of refraction of the piece of glass light moves into some glass and then moves at an angle of 25 degrees to the normal Air

What is the maximum wavelength that will eject an electron from a metal with a work function of 2 46 eV 5 05 10 7 m 1 79x10 m 8 09 10 26 m 3 94 10 19 m