How much is speed 2 A1=10 cm2 A2=2cm2 V1=7m/s V2=?

Q: Several ducks are floating on a lake on a windy day. The ducks bob up and down every two seconds as...

A: Since the ducks bob up and down every two seconds frequency of the wave is n=12 Hz=0.5 HzLet λ be th...

Q: A = 2i + j, B = i– 4j + k, and Ĉ = j+k. ... What is the magnitude of the vector - 2Ả – B + Č?

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Q: Why does a rubbed inflated balloon when brought near your arm, but not touching it, cause the hairs ...

A: A rubbed inflated balloon when brought near your arm, but not touching it, cause the hairs on your a...

Q: A car comes to a complete stop from an initial speed of 60 mi / hr in a distance of 200 ft. With the...

A: Given: Case 1: Initial speed u=60 mi/hr=601.467ft/s=88.02 ft/s, Final speed v=0 ft/s, Stopping dista...

Q: Problem No.1 İx = 0 m A force of 50 N stretches a spring in the figure by 200 mm. (a) What is the sp...

A: *** Since the given two questions are not related to each other, so according to the bartleby guidel...

Q: Problem 2: A farmer is using a rope and pulley to lift a bucket of water from the bottom of a well t...

A: Given, hy = 14.5 m Force applied, F1 = 49.5 N total mass of the bucket with water, mb + mw = 3.5 kg

Q: You are given a 49.5 V battery and two resistors of resistances 26 Ω and 94 Ω.? a)Find the current ...

A: GivenV=49.5 VR1 =26 ΩR2 =94 Ω

Q: A 30.0-kg object experiences a drag force due to air resistance with a magnitude proportional to the...

A: Given: Mass of object = 30 kg v =70 m/s a =4 m/s2    

Q: Three particles with charges +Q, −2Q, and +Q are located at the vertices of an equilateral triangle ...

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Q: It is Superbowl weekend!!! Capt. Balloon is scheduled to fly the Goodyear blimp from the airport to ...

A: displacement in vector notation is 21.4cos240i→+sin240i→km  wind velocity is 6.3cos220-i→+sin220-j→ ...

Q: An electron moves in a circular path perpendicular to a constant magnetic field with a magnitude of ...

A: Given: Magnetic field B=4.50 mT, Angular momentum J=2.50×10-25 J·s. Required: (a) Radius of the circ...

Q: In order for sound to be "heard" it must first vibrate the small bones in the inner ear against the ...

A: Bony structure called Helicotrema

Q: The ratio of the radius of the Earth to that of the Moon is 10. The ratio of acceleration due to gra...

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Q: A body has a mass of 50 kg. Its velocity is brought down from 20 m/s to 5 m/s by a resisting force i...

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Q: 5- If the average heat energy that reaches us from the sun per minute and in a vertical direction eq...

A: Let T be the temperature, the equating the power flux at earth and surface of sun 4πRs2σT4=4πdSE21.9...

Q: 5.46 A plane has a weight of 16000. N, a wing area of 32.0 m2, and a lift coefficient of 0.100 when ...

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Q: You have designed and constructed a solenoid to produce a magnetic field equal in magnitude to that ...

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Q: A crustacean (Hemisquilla ensigera) rotates its anterior limb to strike a mollusk, intending to brea...

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Q: 722 302 5A

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Q: The sum of vectors D, E and F is a resultant with a magnitude of 24.80 cm pointing 21.34o west of no...

A: Magnitude of the resultant vector R=24.8 cm and direction is 21.34o (West of North). The vector D ha...

Q: A rectangular coil consists of N = 140 closely wrapped turns and has dimensions a = 0.400 m and b = ...

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Q: A hockey puck is hit on a frozen lake and starts moving with a velocity of 22.0 m/s. It travels acro...

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Q: -A bullet which has velocity 150 m/s and mass 4 kg sticks to the stationary block. They move togethe...

A: Given: Velocity of the bullet = 150 m/s Mass of bullet = 200 g 200×10-3 kg mass of stationary block ...

Q: A player kicks a football at an angle of 35° with the horizontal and with an initial velocity of 14....

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Q: Relate how surface tension is manifested in water showing water strider walking in the  surface of a...

A: The surface tension in water is due to the Newton's Third Law. Every action have equal and opposite ...

Q: Calculate, how fast you were going in meters per second when you ran the red light because it appear...

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Q: of 60 degrees from the horizontal. What is the horizontal

A: Given  Initial velocity is v_o=4.7 m/a Angle of projection is theta =60 °  

Q: Three forces act on the ring. If the resultant force FR has a magnitude and direction as shown, dete...

A: We have F1→+F2→+F3→=FR→ and given F1→=80cosθi→+sinθk→=8045i→+35k→F2→=-110k→FR→=120cos45osin(300)i→+c...

Q: In each case, find the x- and y-components of vector A: (a) A=5.0 – 6.3;: (6) Å = 11.2j – 991f; () À...

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Q: The motion of a particle is given by a = 6v1/3, where a is in feet per sec² and v in feet per sec. W...

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Q: A whistling train travels past a person standing still. The height of the tone of the whistle sharpl...

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Q: Problem 1 - Unit Conversions A plane moves with speed v = 400 km/h; rewrite v in m/s. The density of...

A: 1 km consists of 1000 m and 1 hour has 3600 sec. 1 kg has 1000 gm and 1 m has 100 cm .

Q: Please answer the equation step by step and include a proper diagram if needed. Usse gravity as 9.8m...

A: Given Mass of the box is m=25.0 kg Applied force is F=1450 N Angle below the horizontal is θ=21.0° C...

Q: 12. The force of an object with a mass of 6.5 kg was 57 N. what was the acceleration? 13. The force ...

A: “Since you have asked multiple questions, we will solve the first question for you. If you want any ...

Q: A coil of inductive reactance 31 2 has a resistance of 8 2. It is placed in series with a condenser ...

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Q: The area of a square field is 24,200 sq. m. How long will a lady take to cross the field diagonally ...

A: Given: The area of the square field is 24200 m2. The speed of the lady is 6.6 km/h.

Q: The particle for which trajectory in a unform magnetic field is spiral of decreasing radius, must be...

A: Required True or False

Q: A 500 kg block is moving @ vo = 6.00 m/s along a frictionless Horizontal surface toward a spring wit...

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Q: A crustacean (Hemisquilla ensigera) rotates its anterior limb to strike a mollusk, intending to brea...

A: Given, angular velocity, ω = 175 radstime, t= 1.50 ×10-3 smass of the limb, M = 28.0 glength, L = 3....

Q: In figure 1 there is a charge q distance between q and q, is necessary in order for for the net forc...

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Q: ... 5.21 In Section 5.1.4, it was commented that g does change with altitude. The formula for g as f...

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Q: When the switch is closed for 10.0 seconds the current in the resistor is: 6.00 V 2.00 F 5.00 n

A: The emf of the battery: V = 6.00 V; The capacitance: C = 2.00 F; The resistance: R = 5.00 Ω; The tim...

Q: 14) A particle is moving on the line, s feet is the directed distance of the particle from the origi...

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Q: In a historical movie, you observed a catapult being used by an army. It hurled a stone with a veloc...

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Q: The refractive index of glass is 1.5. What is the speed of light in glass? (Speed of light in vacuum...

A: Given: The refractive index of the glass is 1.5. The speed of the light inside the air is 3x108 m/s.

Q: 1. What is the magnitude and direction of the force exerted on a 3.50 µC charge by a 250 N/C electri...

A: Given Charge q = 3.5 μC = 3.5 × 10-6 C  Electric field E = 250 N/C

Q: Given data : Kinetic energy%3D20 Joule Velocity=3 m/s Determine Mass

A: Introduction : A body is said to posses kinetic energy when it has motion . Given data : The value o...

Q: What is the x component of the vector illustrated below? Acose Acosp Asing A/sine

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Q: 13. The' force of acting on an object was 3123 N and had an acceleration of 19.8 m/s². What was the ...

A: Since you have asked multiple question, we will solve the first question for you. If you want any sp...

Q: In a historical movie, you observed a catapult being used by an army. It hurled a stone with a veloc...

A: The vertical displacement of the stone as it returns to the same initial horizontal level is S=0. Ca...

Relative Velocity

It is a measurement of an object with regards to the other object which is moving or stable or stationary. For example, if we are traveling in a bus and the bus is moving at speed of 50km/hr, then our speed is according to the nearby passenger on the bus is zero. According to them, we are not moving. But if one person standing on the ground or road observes us from outside of the bus, according to him we are moving at a speed of 50km/hr and the bus is also moving at a speed of 50km/hr. Now, the motion is recognized by the observer, it depends on a frame of reference or observer. This is motion called relative motion.