If vector B is added to vector Ā , the result is 5î-î. If B is subtracted from À , the results is î+9f. What is the magnitude of A ?

Q: A projectile is shot from the edge of a cliff 115 m above ground level with an initial speed of v0 =...

A: A projectile is a missile propelled by the application of an external force, which is allowed to mov...

Q: 1. (a) To what temperature must you raise a copper wire, originally at 21 °C, to double its resistan...

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Q: 4. Ascending to the top of Muir Pass in the Sierra Nevada Mountains in California, Robert climbed 20...

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Q: In a lab activity, forces A and B were set on the force table. A = 0.10 N at 0 degrees and B = 0.10 ...

A: A= 0.1N at 0°  B= 0.1N at 90°  F= 0.15 N at 225° 

Q: How did velocity (v) and velocity squared (v2) relate to the height from which the ball was released...

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Q: A car accelerates from 75 km/h to 115km/h in 5 seconds to overtake a lorry. Calculate the accelerati...

A: Given data : Final velocity=V Initial velocity=U Time=t   To calculate : Acceleration

Q: A machine gun fires 10 bullets/s, each of mass 10g, the speed to each bullet is 20 cms, then force o...

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Q: Light of wavelength falls on a metal having work hc function Photoelectric effect will take place on...

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Q: Jamir fired a 105mm artillery with a projectile exit velocity of 250 m/s. If the tip of the barrel i...

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Q: 1. Find the current through a person and identify the likely effect on her if she touches a 120 V AC...

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Q: A. At what length is the Passive tension the smallest B. At what length is the Passive tension the ...

A: In this question we have to find the where passive length is greatest or smallest.Please give positi...

Q: A 300 turns circular loop of wire carry a current of 1.2 A. It is placed in a magnetic field of 0.2 ...

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Q: A copper wire has an electrical resistivity of 1.694 µQcm. Determine the resistance of a copper wire...

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Q: A 30-kg child sits on the edge of a merry-go-round. The child is located 6 m from the center of the ...

A: Given data: The mass of child is m=30 kg. The distance of child from center is r=6 m. The tangentia...

Q: The ability of the human eye to rapidly rotate was studied using contact lenses fitted with accelero...

A: In this question we have to find the average angular velocity of the eye. Please give positive feedb...

Q: 13. A thin wire of length l and mass m is bent in the form of a semi-circle. Its moment of inertia a...

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Q: A straight, horizontal length of copper wire is immersed in a uniform magnetic field. The current th...

A: We know that the magnetic force (F) experienced by a current (i) carrying wire of length L in a unif...

Q: Calculate n initial for the wavelength 486.1nm the n final is 4 also calculate the energy emitted by...

A: Given that:- Wave length of the emitted photon=486.1nm

Q: What is meaning of “No magnetic force exists on a moving charged particle” a. no magnetic field exis...

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Q: 4. What is the electric fheld strength at a point in space where a proton 167x 10kglexporiences an a...

A: Given that:m=1.67×10-27 kgq=1.6×10-19 Ca=106g=9.81×106 m/s2

Q: The earth revolves around the sun in exactly 365 1/4 days which is equivalent to 1 year. To make up ...

A: Earth revolves around the sun in =365 1/4 days Everyday has 24 hours Total hours in a year= 8760 hou...

Q: Which temperature scale would astronomers be least likely to use when reporting the temperature on t...

A: The astronomers use the Kelvin scale to determine the temperature on the surface of the moon Titan b...

Q: The figure below shows a rod with two masses, M, and two masses, 2 M, spaced at equal 1 m intervals ...

A: Given, two masses: M, and another two masses: 2M. Each of the masses are separated by r = 1 m. To fi...

Q: A 4 x 103 C charge exerts a force of 14 N on a 0.05 C charge. What is the distance between the two c...

A: Given data:  First Charge (q1) = 4×10-3 C  Force (F) = 14 N Second charge (q2) = 0.05 C Required: Th...

Q: Light of wavelength falls on a metal having work function hc Photoelectric effect will take place on...

A: Photoelectric effect happens when incident light has energy more than work function.

Q: Problem 7: A particle moves from point A to point B. Let L be the straight-line distance between A a...

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Q: If the coefficient of kinetic friction between a 33.0 kg crate and the floor is 0.360, what horizont...

A: Given that:- Mass of crate=33kg Coefficient of kinetic friction=0.36

Q: You throw a small rock straight up from the edge of a highway bridge that crosses a river. The rock ...

A: Here's the information that we need to use: yy is the vertical position vv is the rock speed tt...

Q: What occurred when you changed the wire gauge to a thicker size? and reducing the wire size to thin?

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Q: A 50.0-kg woman stands at the rim of a horizontal turntable having a moment of inertia of 520 kg •m²...

A: Ir= 520kgm2  M= 50kg  r = 2m 

Q: In an experiment, a student obtained the following masses for a product: 0.651 g, 0.643 g, 0.648 g, ...

A: Givenm1 =0.651 gm2 =0.643 g m3 =0.648 gm4 =0.609 gm5 =0.646 g

Q: 2) Draw Field Lines 2+ 2+

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Q: Multiple Concept Example 3 provides some pertinent background for this problem. Suppose a single ele...

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Q: Analyze how the conversation of energy was proven

A: Conservation of energy can be rigorously proven by Noether's theorem as a consequence of continuous ...

Q: By what factor does the inductive reactance, XL changed in an ac circuit when the frequency, f is tr...

A: Write the expression for the inductive reactance.

Q: Please give me explanations how to get the velocity of sound since it is different from the speed of...

A: The speed of sound is the distance travelled by the sound wave in a given time.

Q: 18.0 V 5.00 2 8.00 12.0V I100 7.00 0 5.00 0 36.0 V

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Q: A 10,000-m runner competing on a 400-m track crosses the finish line after completing a гасe.

A: Displacement:-  We know that displacement is defined as the shortest distance between the two-point....

Q: 2. An infinitely-long solid cylinder of radius R is filled with a uniform volume density of charge p...

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Q: 2 Two blocks 1 and 2 are connected by a rope over a pulley as shown. The pulley is very light (massl...

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Q: A particle of mass m and initial velocity vo collides elastically with a particle of unknown mass M ...

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Q: One particle has a mass of 3.00 X 10-³ kg and a charge of +8.00 mu C A second particle has a mass of...

A: Given that:- Mass of particle1=3×10^-3 kg  Mass of particle2=6×10^-3 kg  

Q: Given data m=10 Kg g h=5m

A: Given data The mass of the body is given as m = 10 kg. The gravitational acceleration is given as g...

Q: Match each term with the correct descriptor: Terms: 1. Concave Mirror 2. Plane Mirror 3. Convex Mirr...

A: Various types of mirror and their function or shapes are given in the question,  we have to match wi...

Q: An electric field has a constant value of 4.0 X 10³ V/m and is directed downward. The field is the s...

A: The electric field E  = 4.0 X 10³ V/m directed upwards The potential at point P = 155 V  

Q: An RL circuit with a 5-2 resistor and a 0.05-H inductor carries a current of 1 A at t= 0, at which t...

A: we have following data as given in question Resistance of resistor R = 5 Ω Inductance of inductor L ...

Q: What will be acceleration of a body of mass 5 kg if a force of 300 N is applied to it ?

A: Given data :             Mass of body = m            Force = F      To find :             Accelerati...

Q: A 1.56 kg ball traveling , 4.6 horizontally landed in a 22 kg wheeled cart that began at rest. What ...

A: Given data:  Mass of ball (m1) = 1.56 kg Initial velocity of ball (V1) = 4.6 m/s Mass of cart (m2) =...

Q: A particle with charge 1e- moving with a speed of 3.8 x 106 m/s enters a uniform magnetic field of 0...

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Q: The wire carrying 325 A to the motor of a commuter train feels an attractive force of 3.20 × 10-3 N/...

A:

Scalars and Vectors

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