1. A piece of ice is melting on a table. How does the temperature just before melting compare to the temperature just after melting? before = after before > after impossible to tell before < after

Q: 4 5 3 times the charge of the other 6 U

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Q: A ball is thrown straight up from point A, reaches a maximum height at point B, and then falls back ...

A: this problem is similar to the projectile motion.   When a projectile is thrown, it goes up due to t...

Q: The kinetic energy of a 4.0 kg object moving at 3.0 m/s is: 1. 12 J *2. 18 J 3. 36 J 4. 48 J

A: Kinetic energy = 1/2× mv2 Where.   m= mass, v= velocity

Q: A certain strain of bacteria will divide itself from 1 to 2 every to [minute]. As a result, its popu...

A: Given: Population model The table is  Initial population No = 100   Asked: to find to in minutes

Q: When a 360-nF air capacitor is connected to a power supply, the energy stored in the capacitor is 15...

A: Value of capacitor = 360nf Initially energy stored in capacitor=  15.6 μJ. Finally energy stored = 2...

Q: Four charges are arranged in a square with sides of length 500 cm. What is the resultant force on 2q...

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Q: Problem 4. Two open organ pipes, one 2.5 feet long and the other 2.4 feet long, are sounded at the s...

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Q: A hose for firefighters has an inner diameter of 10.0 cm. The pressure inside the hose is 400 kPa hi...

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Q: Convert 100 kg to cm -d

A: Given value and unit is, 100 kgcm3-d

Q: A block is pulled along a rough level surface at constant speed by the force P. The figure shows the...

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Q: If water is cooled from 130 O F to -10 O F, what is the temperature change on the (a) Fahrenheit sca...

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Q: | = ??? Battery E = 18 V Lamp R = 3 0 | = ???

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Q: The diagram below presents the position and elapsed time of a motorbike that starts from rest and ac...

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Q: A 7 µC point charge is located 15 cm from a -2 µC point charge. What is the electrical potential ene...

A: The electric potential energy stored in a system of two point charges is given by UE = kq1q2r, where...

Q: The diagram below presents the position and elapsed time of a motorbike that starts from rest and ac...

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Q: Figure E1.28 B (15.0 m) D (10.0 m) 30.0 53.0 25.0 Č(120 m) A (8.00 m) Given the vectors on Fig El.28...

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Q: A charge of -2.00 µC is placed at the origin of a xy coordinate system, and a charge of 5.00 µC is p...

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Q: A stationary firecracker explodes into two pieces. The piece shot to the right has a mass of 0.07 kg...

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Q: In scenario 2, the elevator is moving with upward acceleration a2 5.51 m/s2. %3D FN.2 N

A: In scenario 1 , since the elevator move with constant velocity , so its acceleration will be zero.  ...

Q: A speed boat pulls a water-skier (with a mass of 100 kg) at a steady speed by a rope at 15 degrees a...

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Q: 2. Find (a) the horizontal components and (b) the vertical components of the resultant electric forc...

A: Given,q = 1.13 μCa = 15.2 cm

Q: A ball is thrown upward in the air with an initial velocity of 40 m/s. How long does it take to reac...

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Q: I wish to use a positively charged rod to charge a ball by induction. Which statement is correct?  ...

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Q: What is refraction? Under what circumstances does it occur?

A: Refraction is the optical phenomenon of light which comes into picture when the light starts traveli...

Q: Suppose that the block now moves across the surface with constant speed under the action of a horizo...

A: Given: The applied force is 3 N. The speed of the object is constant.

Q: A ball is thrown straight up from point A, reaches a maximum height at point B, and then falls back ...

A: Answer: Given data, A ball is thrown straight up from point A, reaches a maximum height at point B, ...

Q: A physics student with mass 51kg slides in the snow (see figure). Find the velocity for each points ...

A: Given: ha=100mhb=60 mhc=30mhd=60mhe=0m

Q: A total resistance of 3.27 Q is to be produced by connecting an unknown resistance to a 12.06 a resi...

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Q: A concrete block is pulled 7.0 m across a frictionless surface by means of a rope. The tension in th...

A: Draw the free-body diagram of the block.

Q: If a substance is changing temperature from below its melting point to above its melting point, how ...

A: If a substance is changing temperature from below its melting point to above its melting point, how ...

Q: A ball is thrown from a tower 30 m high above the ground with a velocity of 300 m/s directed at 20° ...

A: We use the equation for height travelled by a projectile to solve this. It is h = ho+uyt - 12gt2, wh...

Q: Table 1. Range and height for different launching angles Launch speed (Initial velocity) = 25 m/s %3...

A: We use the equations of 2D motion to derive the relations needed. We use v = u+at s = ut + 12at2 v2 ...

Q: If gravity pulls you down toward the center of Earth with a force of 500 N, how much upward force do...

A: From Newton's 3rd laws of motion, to every action , there is equal and opposite reaction.  

Q: A 98 kg bicyclist traveling 15 m/s coasts up a 5 m high incline. After reaching the top of the incli...

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Q: Eind Àx C) · (Č × B) given the following vectors: Å = 21 + 5j B = -31 – }+ 2k Ĉ = 1+ 4j 51 k B 33k 5...

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Q: Question 21 If gravity pulls you down toward the center of Earth with a force of 500 N, how much upw...

A: Given: Normal Force = 500 N  

Q: A flat square with sides 18 cm is placed in a uniform electric field of magnitude 5784 N/C. What is ...

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Q: TRUE OR FALSE. If a body X, with a positive charge, is placed in contact with another body Y (initia...

A: Let the charge carried by positively charged body X = Q The charge on body Y = 0 (neutral)   

Q: The diagram below presents the position and elapsed time of a motorbike that starts from rest and ac...

A: We know thatAverage velocity=Total displacementTotal time

Q: 1. Why does the voltage across the resistor for charging and discharging processes change the sign f...

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Q: Imagine you are designing an optical fibre for endoscopy: if you use glass with a refractive index o...

A: Please note : As per answering guidelines I can answer the 1st question only. Since, this is not a m...

Q: 3. Two similar tiny balls of mass m hung from a silk threads of length L and carry equal charges q a...

A: Given, length of the threads, L angle between the horizontal, θ

Q: A robot pushes a 20-kg giftbox on the horizontal surface as part of the moving job for the holiday s...

A: Given term  Mass of giftbox ( m ) = 20 kg  Acceleration due to gravity ( g )  = 10 m/s μs = 0.75 μk...

Q: You drive your car from home to school at an average speed of 60 kph East for 1 hr and then continue...

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Q: A ball is thrown straight up from point A, reaches a maximum height at point B, and then falls back ...

A: Answer: B- it's velocity is zero and acceleration is down and non-zero constant.

Q: Suppose that à = 2i + j, B =i- 4j + k, and Ĉ = j+k. What is the direction of vector A ? A) 35.8 N of...

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Q: An object is moving along a straight line in the positive x direction. The graph shows its position ...

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Q: The body in the figure is pivoted at O, and two forces act on it as shown. If r = 2.03 m, r2 = 3.93 ...

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Q: The string of 9 meters long is clamped at the ends and is vibrating as the fifth harmonic. The strin...

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Q: 3. An electron with speed if v=3.50 x 10° m/s is traveling parallel to an electric field of magnitud...

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Ideal Gas Law

Ideal gas law states that the product of pressure and volume of a gas directly varies with the product of the number of moles, the universal gas constant, and the temperature of the gas.