What is the meaning of the vector expression A + (-A) = 0? O The vectors A and -A are really one and the same O b. The vectors A and -A have the same magnitude and the same direction O The vectors A and -A have the same magnitude but opposite directions O The vectors A and -A have different magnitudes but the same direction.

Q: Identify the exponential relationship from the list below: Select one: O a z=(100+2)e4t Ob. z =(100+...

A: The numerical value of 'e' is e = 2.71828 An equation becomes an exponential equation if there is a ...

Q: 25.0kg box is being pushed by a man horizontally. If the man applies a force of 200.0 N to keep the ...

A: Given  Mass of box, M = 25.0 kg  Force, F = 200.0 N  Moving at constant velocity   

Q: A coin with a diameter of 5 cm is dropped on edge on a horizontal surface. The coin starts out with ...

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Q: s your answer using two significant figures. m/s mit Previous Answers Request Answer Incorrect; Try ...

A: Charge on electron= 1.6 × 10-19 C Electric current= 3.5 × 1017 electron/s = 3.5 × 1017 × 1.6 × 10-19...

Q: If the absolute pressure at a certain depth in Lake Michigan is 2.5 atmospheres, the gauge pressure ...

A: Absolute pressure at certain depth is Pabsolute = 2.5 atm  Let the depth is d .  

Q: A 1.9-m-long gold wire that is 0.50 mm in diameter? Express your answer in ohms. ? Submit Previous A...

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Q: 14. Karen flies a motorized toy airplane with a frequency of 200 Hz in a circle with a speed of 18.0...

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Q: A hammer is dropped from the roof and takes 3.00 s to reach the ground. A wrench is also thrown vert...

A: Given: time taken by hammer to reach ground t1 = 3.0s time taken by wrench to reach ground t2 = 2.0s

Q: A coil of wire with a radius of  3.2cm is rotated at 85 rpm in a 0.075T magnetic field. What is the ...

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Q: Explain the effect of molecular weight concentration on the refractive index

A: The refractive index is directly proportional to the concentration,as concentration of guiding liqui...

Q: A proton of mass m=1.67×10^-27 kg and charge q=1.6×10^-19 C is accelerated from rest in vacuum under...

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Q: What object did Mr. Benjamin Franklin put on the kite when he discovered the direction of convention...

A: On a June afternoon in 1752, the sky began to darken over the city of Philadelphia. As rain began to...

Q: Compute the derivative of the velocity of sound with respect to the absolute temperature [re: eqn 1]...

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Q: What is the capacitance of a pair of circular plates with a radius of 8.0 cm separated by 3.1 mm of ...

A: Given Radius of plates r = 8 cm = 8 × 10-2 m Separation d = 3.1 mm = 3.1 × 10-3 m Dielectric constan...

Q: A hollow conducting sphere of radius 0.12 meters has a uniform charge distributed on its surface. Th...

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Q: why is the choice of ultrasound frequency used in medical imaging is a compromise between image reso...

A: The ultrasound frequency waves that is short wavelength always generate images of high axial resolut...

Q: In the equation, NA = n*sin(ø), n = ? a. The wavelength of light rays b. The refractive index of t...

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Q: Three resistors with values of 60 , 30 , and 20 , respectively, are connected in parallel to a 110. ...

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Q: wn. It takes him 20 minutes to cover this distance. Write a vector in component form that describes ...

A: We know that Bruce begins 7 kilometers to the north of town and rides his bike along a straight trai...

Q: Computer the electric potential energy of a +5 C and a -7 C with a distance of 3 m.

A: GivenQ1 = + 5 CQ2  = -7 Cr = 3 m

Q: During a collision with a wall, the velocity of a 0.200-kg ball changes from 20.0 m/s toward the wal...

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Q: An object is held 33.5 cm from a convex mirror. It creates a virtual image of magnification 0.253. W...

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Q: A drag racing car starts from rest at t = 0 and moves along a straight line with velocity given by v...

A: A drag car Start from rest at t=0 and moves along a straight line with velocity given by v=bt² We ha...

Q: Part A An 2200 W arc welder is connected to a 660-Vrms ac line. Calculate the peak voltage. Express ...

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Q: A wooden block with a density smaller than water. If it is placed in a tank of water and released fr...

A: When it is completely submerged in tank of water it will rise to the surface . Since density of wood...

Q: Part A A 100-W lightbulb has a resistance of about 12 N when cold (20 °C) and 144 Q when on (hot). E...

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Q: he beginning of a reaction, an electron and are separated by 0.115 nm , and their final ion is 0.101...

A: initial distance = ri = 0.115 x10-9 m final distance = rf= 0.101 x 10-9 m

Q: The angular momentum of a flywheel having a rotational inertia of 0.276 kg-m² about its central axis...

A: We are authorized to answer three subparts at a time, since you have not mentioned which part you ar...

Q: At what distance, in meters, away from a 6.39-nC charge will the electric field strength be 203.08 N...

A: GivenCharge,Q=6.39 nCElectric field strength ,E=203.08 N/C

Q: Assume two identical hypothetical balls of pure electrons. These balls are separated by a distance o...

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Q: I need help understading this and the calculations step by step  the answer is in blue  and i need h...

A: Image-1

Q: Bob built a scale model of the bridge that is 2.637m long at the lowest temperature (T=-45 degrees C...

A: The change in length of a bar due to temperature change is given by ∆L= Lα∆T, where ∆L = the change ...

Q: Calculate the ratio of the resistance of 14.0 m of aluminum wire 2.5 mm in diameter, to 25.0 m of co...

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Q: A blade of a ceiling fan has a radius of 0.500 m is rotating about a fixed axis with an initial angu...

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Q: How would you orient two long, straight, current carrying wires so that there is no net magnetic for...

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Q: Calculate the angular velocity of the hour-hand, of a clock from 7:00 pm to 2:00 am. State in rad/s....

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Q: Assume the observable Universe is charge neutral, and that it contains n nuclei (hydrogen plus heliu...

A: Given information: The number of nuclei in the universe (n) = 1080  The mass fraction of helium (XHe...

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

A: Given,  m = 51 kg  HA = 100 m HB = 60 m HC = 30 m HD = 60 m HE = 0 m Here H is the height of each po...

Q: given two vectors u 2i+3j+ 4k, v= 4i+3i-2k a. Calculate u v b. Calculate uxv

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Q: A basketball player runs 7.00 m due north, then 5.00 m in a direction 30° north of west, and finally...

A: Given ,  A = 7 m , North              B = 5m, 300 north of west              C = 8 m east

Q: After enjoying her stay in Paris, Emily wanted to head to the airport, which is 5.73 km 14° S of W f...

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Q: A skier of mass 70 kg is pulled up a slope by a motor driven cable. (a) How much work is required to...

A: The free-body diagram of the skier on the slope is shown below. Here, m is the mass and v is the co...

Q: he earth’s mass is 5.972x1024 kgs and the earth’s radius is 6371 kms, determine the altitude of a bo...

A: Given: M=5.972*1024 kgR=6371 km = 6.371*106 mgh=9.7 m/s2

Q: 5. Differentiate the relationship of electric potential to each of the following concepts: A. Potent...

A: The basic difference between electric potential and electric potential energy is that Electric poten...

Q: 6. A boy pulls a sled with a mass of 20 kg horizontally over a surface with a coefficient of sliding...

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Q: A 30.0-g metal ball having net charge Q = 5.50 µC is thrown out of a window horizontally north at a ...

A: Given: Mass of metal ball: 30 g  Net charge Q=5.50 μC Initial speed v = 22 m/s height of window h: 1...

Q: Denny jumps up and down on his bed, taking 0.75 s for each jump. What is the frequency of Denny’s ju...

A: The time taken by Denny for each jump is given by T=0.75 s

Q: When a capacitor has a charge 2Q, the actual charge on the plates are?__,__

A: The relation connecting the capacitance, charge and potential difference is given by; Q=CV          ...

Q: Suppose a rocket is at an elevation of 100 km and has an initial velocity of 1.00 x 10^4 m/s directe...

A: Given:initial velocity u = 1*104 m/s initial height h = 100 km = 1*105 m

Q: 102 C 3. For the circuit at right, find: ノン (a) The current at pts. A, B, C,D,& E. The power dissipa...

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Scalars and Vectors

Scalars and Vectors are the classification of physical quantities that are used to denote various terms in physics.