What flaws do you see in the assumption that the heat added to the water (or glycerin) is proportional to the time that the hotplate is on? 2. When heating water on a stove, a full pot of water would take longer to reach the boiling point than if the pot were half full. Why?

Q: 1. An object moving with uniform acceleration has a velocity of 14.0 cm/s in the positive x-directio...

A: Given data  X= -10 cm Xo  = 4.50cm/s U=14.0cm/s  t=3.00 s

Q: A 2.5 kg block is initially at rest on a horizontal surface. A horizontal force F of magnitude 6.2 N...

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Q: A capacitor with capacitance 5 µF is charged to 5 µC. If the plates are pulled apart to reduce the c...

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Q: potential

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Q: A daredevil is shot out of a cannon at 45.0° to the horizontal with an initial speed of 15.0 m/s. A ...

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Q: If the Earth has no rotational motion, the weight of a person on the equator is W. Determine the spe...

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Q: Try this: CONDUCTIVITY PROBLEM What is the minimum diameter (D) of the Cu wire so that AV < 1.5 V? O...

A: Given, Current in the wire, I = 2.5 A length of the wire, L = 100 m conductivity of the wire, σcu = ...

Q: Part A A7600-kg railroad car travels alone on a level frictionless track with a constant speed of 17...

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Q: A spacecraft flying in a straight line with velocity of 75 km/s fires its rocket motors for only 6.0...

A: Given Velocity before firing the rocket (u) =75 km/s =75000 m/sVeocity after 6 s (v) =120 km/s = 120...

Q: A light ray passes through a glass lens, shown in cross section in the figure below. Find the angle ...

A: Given :    θ 1= 41°, θ 2=22° , θ 3=27°

Q: What is the angular magnification of a microscope using an objective with a magnification of 22.7 an...

A: angular magnification=me×mo me=eye piece magnification(ocular)=10.2m0 magnification of objective len...

Q: Suppose 0.1 kg ice at 0 Celsius (273K) is in 0.5kg water at 20 Celsius (293K). What is the final tem...

A: We have mass of ice m1=0.1 kg at a temperature T1=273 K and water of mass m2=0.5 kg and temperature ...

Q: A 75kg person jumps horizontally out of a tree with an initial velocity of 3m/s i. The person lands ...

A: GivenMass of the person (M) = 75 kgMass of the wagon (m)  = 12 kgInitial velocity of the person (u) ...

Q: A boll rounds a 42 m radius curve at 18 m/s. The magnitude of it's acceleration in m/s2

A: Given data :                  Speed  =  V                 Radius  =  R        To find :             ...

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Q: Two charges are placed along the x axis, with charge QA placed at the origin and charge QB placed at...

A: Determine the sign of charge. Graph is given

Q: Calculate the rate of heat conduction through house walls that are 13.0 cm thick and that have an av...

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Q: Constact Part A Two billiard balls of equal mass move at right angles and meet at the origin of an a...

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Q: ) i4R – €2 + izR = 0 O -iR – €1 + 2ig R = 0 O iz = i6 + i1 €1 – iįR+ 2igR=0 O -iR – i3R – €1 = 0

A: Explanation-     according to Kirchhoff's Voltage law net voltage drop in a closed loop is zero and ...

Q: Shown are the cross-sections of the equipotential surfaces of point charges x and y. How are x and y...

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Q: If the Earth has no rotational motion, the weight of a person on the equator is W. Determine the spe...

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Q: A cork gun contains a spring whose spring constant is 20 N/m. The spring is compressed by a distance...

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Q: An astronaut who is repairing the outside of her spaceship accidentally pushes away a 90.9 cm long s...

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Q: reaches terminal velocity, which relationship forces [gravity Fg, viscous Fy, buoyant Fb] act O IFgl...

A: Given Data : Gravity force  Viscous force  buoyant force    

Q: Taking the wavelength of first Balmer line in hydrogen spectrum (n = 3 to n = 2) as 660 nm, the wave...

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Q: A small, 2.00-g plastic ball is suspended by a 20.0-cm- long string in a uniform electric field as s...

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Q: a) 1.9 m b) 52 m c) 2.7 m d) 5.1 m e) 2.2 m

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Q: Fill out the table of values based on the given closed circuit. Use prefixes as needed. Show all equ...

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Q: A wire stretched between two rigid supports vibrates in its fundamental mode with a frequeney of 45 ...

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Q: A plastic cube (density 852 kg/m°) has side length 1.22 jar of maple syrup (density 1199 kg/m3)-you ...

A: GivenDensity of plastic cube, ρc=852 kg/m3Side length ,a=1.22 cm=0.0122 mDensity of maple syrup, ρs=...

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Q: A typical wall outlet voltage in the United States is 120 volts. Personal MP3 players require much s...

A: Given data:  Primary Voltage (Vp) = 120 V Second voltage (Vs) = 104.2 mV Primary turns (Np) = 6908 R...

Q: Calculate the temperature at which the average K.E. of a molecule of a gas will be the same as that ...

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Q: 4. From a speed of 75 kph, a car decelerates at the rate of 500 m/min? along a straight path. a. How...

A: Initial velocity of car u=75 kph=20.83 m/s, deceleration rate of car a=-500 m/min2=-0.138 m/s2 and t...

Q: A 200 Kg bus sppeds along at 56 mph. The coefficient of friction between the tires and road is 0.8 i...

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Q: A person with a range of vision from 23 cm to ∞ uses a 15 cm focal length magnifier. (a) Find the a...

A: Given,  The near point of the person is at a distance D=23 cm Focal length of the magnifier , f=15cm

Q: 5. An air track glider of mass m1=0.200 kg moving at 0.750 m/s to the right collides with a glider o...

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Q: The electric field of light wave is given as = 10-3 - 2п х 6 х 1014t COS 5x10-7 N This light falls o...

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Q: There are two charges of 82 nC and 98 nC, separated by a distance d. If the net electric potential m...

A: Given The charges are given as Q1=82 nC=82×10-9 C and Q2=98 nC=98×10-9 C Separation between the char...

Q: 14. Given the circuit. 10 V 10 V What is the emf of the battery? 10 V 10 V a.5 V b.10 V C.20 V d.40 ...

A: Battery is a source which supplies current to the circuit.

Q: A small bead of mass m = 5.00 × 10-º kg carrying positive charge Q = 30.0 µC is pl the electric fiel...

A: We know that the formula of the electric force is given as  F = qE  where q is the charge and E is t...

Q: A person throws a ball upward into the air at an initial velocity of 15.0 m/s. Calcate the time (t) ...

A: Here acceleration (a) is g = 9.8m/s^2 (this will be negative since it is going in the opposite direc...

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Q: Directions: Describe the relationship between resistance, cross-sectional area and length of the wir...

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Q: A wire of radius R and length L has a resistance of 14 Q. What is the resistance of a wire made from...

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Q: At any given moment there are several different forces acting on an object. Which of the following o...

A: According to Newton's second law of motion, Fnet = m×a  Where,  Fnet = net force acting m = mass of ...

Q: Consider the multi-loop circuit shown in the picture below. From the equations below, select all cor...

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Q: A the x-axis while being subgjected te particle moves along variable for ce. The force is described ...

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Q: A stone sphere is allowed to float downwards in a lake. Before the object's speed reaches terminal v...

A: Terminal velocity is the maximum velocity attainable by an object as it falls through a fluid. it oc...

Q: Force X has a magnitude of 1240 pounds, and Force Y has a magnitude of 1470 pounds. They act on a si...

A: Magnitude of X force is, 1240 pounds  Magnitude of Y force is, 1470 pounds Angle between X and Y for...