3- Compare the size of: observable universe and the earth. Scale down the numbers you found to more tangible objects; imagine you want to explain it to a kid in elementary school.

Q: Two small plastic spheres are given positive electrical charges. When they are 19.0 cm apart, the…

A:

Q: Save. A plastic rod that has been charged to -45 nC touches a neutral metal sphere. Afterward, the…

A:

Q: A popular web site state that a 200. pound person will burn 450. calories/hour bicycling (moderate…

A: Given: Rate of calories burn during bicycling =450 calories/hour=450 calories/hour1 hour60 min=7.5…

Q: these two examples, what exactly happens if the current goes from left to right? For the first…

A:

Q: 12. An arrow is fired from a bow with a horizontal velocity of 52.9 m/s and the arrow was 1.70 m…

A:

Q: Review Conceptual Example 6 as background for this problem. A car is traveling to the left, which is…

A:

Q: A cellphone is accidentally dropped from the roof of a building. How fast is it traveling after 9 s?…

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

Q: • Vector A has a magnitude of 20 at an angle (measured counter-clockwise from the x-axis) of 25° .…

A:

Q: A chair of weight 70.0 N lies atop a horizontal floor; the floor is not frictionless. You push on…

A:

Q: When a photon is emitted by an atom after absorbing some energy input, the energy of that emitted…

A: When the photon passes near to an electron, the electron absorb the photon  and gain the energy that…

Q: What is the net electric field at the center of the metal ball? Enet Negatively charged What is the…

A:

Q: The elected strength in the space between two closely spaced para diska s 10 10 NC This is the rest…

A:

Q: speed passe puck na a speed of 9.02 m/s and is moving in a direction of 28.8° west of south,…

A:

Q: 21. The diagram here represents a mass of 1.0 kilogram traveling at 8.0 meters per second in a…

A:

Q: The radius of a wheel is 0.700 m. A rope is wound around the outer rim of the wheel. The rope is…

A: Given, The radius of a wheel is r = 0.700 m

Q: A small object is connected to a lightweight cord of length L 1.80 m that is tied to a point P, as…

A:

Q: Draw a clear vector diagram for the forces.

A:

Q: An electric vehicle starts from rest and accelerates at a rate of 1.6 m/2 in a straight line until…

A: Given, An electric vehicle starts from rest and accelerates at a rate of 1.6 m/s2 in a straight line…

Q: Estimate the average distance between molecules in air at 0.0°C and 4.90 atm.

A: Given temperature T=0.0 degree=273K Pressure P=4.90 atm =4.90×1.01×105Pa And we know that PV=nKT…

Q: An electron with a speed of 6.19 x 108 cm/s in the positive direction of an x axis enters an…

A:

Q: Let H be a solid hemisphere of radius a whose density at any point is proportional to its distance…

A:

Q: Given a line charge density of p.=nuc/m at (2,3,0) in a, direction. Find the Electric Field on point…

A:

Q: A projectile is launched from and returns to ground level, as the figure shows. There is no air…

A: Given, A projectile is launched from and returns to ground level.Range, R = 172 mv0x = 25.0 m/s Let…

Q: n the railroad freight yard, an empty freight car of mass m rolls along a straight level track at…

A: Given m1=m (mass of freight car) u1=1.10 m/s (initial velocity of freight car) m2=5.70m (mass of box…

Q: Boxes A and B are in contact on a horizontal, frictionless surface (Figure 1). Box A has mass 25.0…

A:

Q: Felipe is on a train going south at 30 meters per second. At one point, he passes a train that is…

A: Given,  Felip is on a train going south at = 30 m/s At one point, he passes a train, that is…

Q: nipolov oxhion labini od dn 3. Car A traveling with an initial velocity of 15 m/s has an…

A: S=ut+12at2S=(−30 m/s)t+12(0 m/s2)t2S=(−30 m/s)t Write the second kinematic equation for car B and…

Q: If I have an average value of an electric field as -180 V/m, what am I able to conclude?

A: An average electric field value of -180 V/m indicates that the direction of the electric field is…

Q: Nala heated an iron rod for 20 minutes and the length increased from 200 mm to 210 mm. Then he took…

A:

Q: Why is the tension force in the vertical direction Tcos(theta) and not Tsin(theta). Isn't…

A:

Q: 1 8₂6 93 83 G (+) a. Find the potential energy associated with the q₁ charge. b. How much work was…

A:

Q: A = 22 + (-14)ŷ, and B = 2.52 + 139. Show Transcribed Text Express A-Bin unit vector notation…

A: A→= 22x^ - 14y^B→ = 2.5x^ + 13y^

Q: An airplane is flying with a velocity of 240 m/s at an angle of 30.0° with the horizontal, as the…

A:

Q: vector M is 4 m to the east and vector N is 3 m to the south What is the direction of M +N,…

A:

Q: A football quarterback runs 13.7 m straight down the playing field in 2.50 s. He is then hit and…

A:

Q: At highway speeds, a particular automobile in capable of an acceleration of about 1.8 m/s². Part A…

A: Given: Initial speed vi=55 km/h=55 kmh×1000m1km×1h3600s=15.278 m/s, Final speed vf=120 km/h=120…

Q: Small steel balls fall from rest through the opening at A at the steady rate of 4 per second. Find…

A: Apply the second kinematic equation and substitute the corresponding values o calculate the time of…

Q: A ship travels 7 miles in 89 nearest whole number) Your Answer: Answer units

A: Given, Distance travelled by ship = 7 miles Time taken = 89 minutes = 1.48 hr We know that speed =…

Q: A proton and an electron are in a constant electric field created by oppositely charged plates. Both…

A: As per question Electron and proton have same charge,same electric field ,so F=qE

Q: Two electrons are each 1.60x10-10 m from a proton, as shown in (Figure 1), find the magnitude and…

A: We know, Force acting between two charge particles: F = kq2 / r2 where, q =  charge r = distance…

Q: (a) A 1.50 μF capacitor and a 4.75 μF capacitor are connected in series across a 7.50 V battery. How…

A:

Q: How to find the net force with friction?

A: Given and we need to dicuss, How we can find net force using friction =?

Q: You are standing on a bathroom scale in an elevator (yes people are staring at you).  You weigh 50…

A:

Q: A ball is launched with an initial velocity of 44.1 meters per second, at an angle of 34.4o above…

A: Given :  Initial velocity= 44.1 m/s  Angle = 34.4°

Q: What was the plane of motion in which pelvis and upper torso rotation were assessed? xy-planet…

A: ANSWER(11) The plane of motion in which pelvis and upper torso rotation is usually assessed is the…

Q: Determine the voltage across the 5.0- resistor in the drawing. Number i -7.25 Units 5.092 10.0 V V…

A:

Q: AUS-5 A 3kg block is held at rest against a spring with spring constant 85N/m that is compressed…

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

Q: Transverse waves traveling along a string have the following properties. Amplitude of the wave =…

A:

Q: The vector above is given in x- and y-component form as Vx = -7 m/s, Vy = 4 m/s' What is the angle…

A:

Q: A. Least Count of an Instrument Scale DATA TABLE 1 Purpose: To practice determining least count and…

A: 1.The probable sources of error can be from the least count of the vernier caliper or the micrometer…

Stellar evolution

We may see thousands of stars in the dark sky. Our universe consists of billions of stars. Stars may appear tiny to us but they are huge balls of gasses. Sun is a star of average size. Some stars are even a thousand times larger than the sun. The stars do not exist forever they have a certain lifetime. The life span of the sun is about 10 billion years. The star undergoes various changes during its lifetime, this process is called stellar evolution. The structure of the sun-like star is shown below.

Red Shift

It is an astronomical phenomenon. In this phenomenon, increase in wavelength with corresponding decrease in photon energy and frequency of radiation of light. It is the displacement of spectrum of any kind of astronomical object to the longer wavelengths (red) side.