The sun emits white light, and yet we have all noticed that it looks a bit yellow/red when you see it from the earth, especially at sunset and sunrise. You may have also heard that the sky is blue. Explain these facts using the colors discussed in this lesson

Q: 1. An object is placed 30.0cm in front of a converging lens and then 12.5cm in front of a diverging ...

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Q: Consider two positive charges located on the y - axis. Let Q = 4.0 µC, and a = 0.07 m. Find the elec...

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Q: 5. A 1000N block was pushed by a force P of 1500N up an incline upward to the right at a slope of 3 ...

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Q: Two point charges exert a 5.85 N force on each other. What will the force become if the distance bet...

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Q: Object A is neutral and object B carries a net charge. They are placed near each other on an insulat...

A: According to Coulomb’s law electrostatic force between two charges is directly proportional to produ...

Q: -800- Dimensions in mm F1 600 F2 F3 900 L-560–--430–- What is the y component of F3=423 N?

A: The value of the force F3=423 N, horizontal distance from center x=480 mm and vertical distance from...

Q: A skateboarder is attempting to make a circular arc of radius r = 19 m in a parking lot. The total m...

A: mass = 95 kg coefficient of static friction = 0.66 radius (r) = 19 m   

Q: A long, straight wire lies on a horizontal table and carries a current of 2.20 µA. In a vacuum, a pr...

A: Given: Current in the wire =2.20μA =2.2×10-6 C Speed of proton(v) = 2.2 ×104 m/s Charge of a proton ...

Q: Two ropes apply a force to a boat. The first is 500 N in the positive x direction, and the second is...

A: The answer is below

Q: An brand of fruit snacks claims that each bag of fruit snacks has a mass of 25.5g. After weighing th...

A: Accuracy :   It is defined as the closeness of the measured value with the true value . Precision : ...

Q: p. add the values together to get the total energy. don't forget to label the units

A: We know that the formula of the gravitational potential energy is given as  GPE = mgh  where m is th...

Q: harges are located at the corners of an equilateral triangle, as shown in the picture. What is the n...

A: We know that three charge at the corners of an equilateral triangle, q1= +3.5μCq2= +5.0μCand q3= - 5...

Q: 1. Figure 1 shows a multi-loop circuit. Determine I1, l2 and I3. 2.5 O 12 V

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Q: What is the potential difference between the plates of a 3.3-F capacitor that stores sufficient ener...

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Q: - Energy is measured in the same units as (1) force (2) momentum (3) power (4) work Which quantity a...

A: Required:  Which quantity has same unit as energy 

Q: The electric force between two point charges with a magnitude of +800nC and 900nC is 15N. How far ap...

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Q: A certain wire has a diameter of 0.55 mm and contains 8,5 x 10^28 free electrons/m^3.If the wire has...

A: Diameter of wire = 0.55mm no. Of electron = 8.5×1028 free electron/m3 Current= 3.1 A Area A =πR2= 3....

Q: 8. A car of mass 2 tons is travelling along a straight horizontal road at a speed of 30 m/s when it ...

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Q: A small spherical insulator of mass 6.82 x 102 kg and charge +0.600 µC is hung by a thin wire of neg...

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Q: You are given the dynamics equations that are used to solve a problem: T – 0.20n – (20 kg) (9.80 m/s...

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Q: 1. Given: Vector D, with horizontal and vertical components: 20 in and 30 in, respectively. Vector D...

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Q: C A P' 2.

A: Given, P = 328 NQ = 400 Nangle A=34 degreesangle B = 17 degreesangle C = 51 degreesangle D = 22 degr...

Q: The rocket is at height of 150 km above the Earth. Thus, the distance r in which is measured from th...

A: Given that:- Height of rocket from earth surface=150km

Q: A 0.0150-2 ammeter is placed in series with a 9.50-N resistor in a circuit. Calculate the resistance...

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Q: 1. Two blocks respectively A weighs 1600N and B weighs 2400N are connnected by a spring both rests o...

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Q: If a = 3.0 mm, b = 4.0 mm, Q, = 60 nC, Q, = 80 nC, and q = 32 nC in the figure, what is the magnitud...

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Q: Three equal charges (Q1, Q2, & Q3) of +5x10^-6 C (Micro-Coulomb) form the vertices of a triangle tha...

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Q: 34. Which graph best represents the relationship between the gravitational potential energy PE with ...

A: 34) Let the mass = m let the height = h let acceleration due to gravity = g   

Q: On planet #3, you fire a projectile horizontally from the edge of a vertical cliff 46.4 m above the ...

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Q: A 1600 lb elevator by a 200ft cable that weighs 10 lb/ft. How much work is required to raise the ele...

A: Consider 1600-lb elevator is suspended by a 200-ft cable that weighs 10 lb/ft The objective is to fi...

Q: pumpkin is shot straight up with an initial speed of 5.9 m/s. What is the maximum height it can reac...

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Q: Three equal charges of +3C are arranged in a straight line in the sequence of Q1, Q2 and Q3. The dis...

A: Given data- Three equal charges Q1=Q2=Q3= +3C Distance between charge 1 and 2 is =3/4 meters Distanc...

Q: The tension in a vibrating string that is 2.5 m long and having a linear mass density of 0.03 kg/m i...

A: The fundamental frequency of a string is given by  f=v2L=Tμ2L Here, f is the frequency of a string, ...

Q: Why do you think blacksmiths must have such hot fires to forge steel? Because metals are brittle and...

A:   Steel is mainly made up of Iron and Carbon, and little percentage of other elements to make differ...

Q: On planet #5, a stone dropped from a height of 64.3 m above the ground will hit the ground at a spee...

A: The answer is below

Q: What would be the voltage across Resistor 1, 2 and 3

A: The equivalent Resistance when two resistors of resistance R1 and R2 connected  i) series Req= R1+...

Q: assume the object has a mass of 0.55kg. calculate the gravitational potential energy and kinetic ene...

A: Given: The mass of the object is 0.55 kg. The height of the object is 4.99 m. The speed of the objec...

Q: In the figure a "semi-infinite" nonconducting rod (that is, infınite in one direction only) has unif...

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Q: 7. An object of mass 10 kg is sliding from the top to bottom in a frictionless inclined plane of inc...

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Q: Light of wavelength 535 nm passes through a single slit of width 2.00 x 10-5 m. What is the angle be...

A: Given: The wavelength of the wave is 535 nm. The width of the slit is 2x10-5 m.

Q: Vhat is the net force acting on Q1 if the charges are as -500 nanocoulomb; Q3 = 750 nanocoulomb. The...

A: We know that we have three charges that are  Q1= 500nC ,Q2= -500 nC and Q3= 750 nC  The distance bet...

Q: A proton and an electron are moving due east in a constant electric field that also points due east....

A: Magnitude of electric field, E= 7.0 x 104 N/C

Q: A bullet shot straight up returns to its starting point in 9 s. What is the initial speed of the bul...

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Q: A square plane, whose sides measure 2m each, is placed parallel with the direction of the electric f...

A: Express the relation for the electric flux through the plane. ϕE=EAcosθ ------(1) Here, ϕE is the el...

Q: A high-speed dart is shot from ground level with a speed of 150 m/s at an angle 30° above the horizo...

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Q: Show that the value for both the Celsius scale and the Fahrenheit scale would be the same at -40°. S...

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Q: Suppose a student rubs paper onto his hair. Answer the following problems. a. What is the process of...

A: Given:  Scenario : Student rubs paper on his hair. 

Q: Determine the magnitude and direction of the electromagnetic force between the two charges (43) (-45...

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Q: On planet #4, you fire a projectile from the ground at an initial speed of 48.7 m/s at an angle of 3...

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Q: 9. A boy weighing 160 lbs lies in a hammock. The rope at the persons head makes an angle of 40 with ...

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