An astronaut is landing on the Moon. What will be the angular diameter of the Earth that he will observe? (a) .52 deg (b) 1.1 deg (c) 1.91 deg (d) 0.955 deg (e) none of the above Solution: Distance D = 384000 km Earth radius REarth = 6400 km Moon’s radius RMoon = 1737 km

Q: (a) 0.20 m, E = 675000 (b) 0.10 m, E= -2.70E6 (c) 0.025 m. E = 0.000E-4 N/C N/C ✓ N/C ✓ radially…

A:

Q: Prof. Chini's research group uses short bursts of laser light to measure the motion of electrons…

A:

Q: While going down a roller coaster 20 m above the ground, a 100kg man is moving at 10 m/s  What is…

A:

Q: I am on a mysterious planet that has a mass 4 times that of Earth and measure the force on a 1 kg…

A: Write the expression for the force on the object exerted by Earth. Fe=GMemRe2

Q: What is the value of n+r/(2.000) 2, written with the correct number of significant figures? O…

A: To determine: The value of π+π2.0002

Q: For the graph of vx versus t shown, estimate the following: i) What is the slope of the tangent line…

A: The above problem can be solved in two different ways. The first method using the two-point formula…

Q: How do i calculate the distance ? x (m) 20 t (s) 4 1 3. 10

A: The distances covered in the following time intervals are calculated below :  From t1=0→1s :…

Q: The elements of a spacecraft with axial mass symmetry and a reaction-wheel ontrol system are shown…

A: Given, The maneuver is completed after time, tM=28 s Mass of the spacecraft is ms=190 kg Radius of…

Q: According to Lunar Laser Ranging experiment the average distance Lm from the Earth to the Moon is…

A: The average distance from the Earth to the Moon is given as, LM = LL×105 km (or) LM = 3.85×105 km…

Q: On the planet Zebulon, the standard unit for length is the clorf (cl) and the standard unit for time…

A: Given values -  1 cl = 0.765 m  1 be = 1.957 s Driving speed = 85 mi h-1 1 mi = 1609 m  First, we…

Q: In an experiment to measure the gravitational acceleration g, the distance of fall y and the time…

A: Given:- The distance of fall y =60.0+0.3 cm                    time =0.351+0.001 s…

Q: Three masses, MA = Mg = Mc = M are placed at the vertices of a right triangle ( ill pilE Eilia wg'}…

A:

Q: We sent a probe out to orbit the planet Kerbal at a distance of 5.5x107m from the middle of the…

A: we know the distance between planet and orbit. that is r =5.5*107 m

Q: The speed of a gravitational wave is reported to be the same as the speed of light, which is 3.0 x…

A:

Q: Taking the age of Earth to be about 4 ✕ 109 years and assuming its orbital radius of 1.5 ✕ 1011 m…

A:

Q: A light-year is the distance light travels in one year at speed =2.998*10^8m/s a) How many inches…

A: (a) The distance traveled by the light in one year can be evaluated as, d=2.998×108 m/s365×24×3600…

Q: The kinetic energy varies directly as the square of the momentum (?) and inversely as the mass (?).…

A:

Q: Let Á=6i-8j, B=-8i+3j , and the variables a and b. Ć=26i+19j . If aÃ+bB+C=0 , calculate

A: Given:- A→=6i^-8j^B→=-8i^+3j^C→=26i^+19j^ aA→+bB→+C→=0 Find:- value of a and b

Q: Convert 150 cm1.5 to an equivalent number of m1.5, given that 100 cm = 1 m   Give your answer to 2…

A: It is given that, 1 cm=10-2 m. It is required to convert 150 cm1.5 into m1.5.

Q: A planet in an orbit around the planet Mars has a period of 7 hours, 39 minutes and an orbital…

A: We know that a planet in an orbit around the planet Mars has a period of 7 hours, 39 minutes and an…

Q: Convert 7.4 to revolution? O A. 7.4 rev. OB. 3.7 rev. O C. 4.0 rev. D. 1.3 rev.

A: Given,  7.4 pi We need to convert, 7.4 pi to revolution =?

Q: The rings of the planet Saturn consist of particles of rock and ice which orbit the planet. The mass…

A: We need to calculate the gravitational attraction force between the Saturn and the orbiting…

Q: The reading of the micrometer shown in the figure is: 45 9$10 15 40 35 30 a. 17.37 mm O b. 12.5194…

A: Solution:   The reading of the micrometer is calculated as follows:   Micrometer Reading=Sleeve…

Q: Suppose that, while lying on a beach near the equator watching the Sun set over a calm ocean, you…

A: Based on the given information in the question , the following diagramcan be drawn .

Q: 100 ,000m 10 years = 25 minutes = nm(nanometer) Sec(Seconds) Years %3D

A: Required:  100,000 m into nanometer 10 years into seconds 25 minutes into years

Q: Determine the A×B.A×B. (A=2i+5j+8k) (B=−i−5j−4k)

A: Given ,   A = 2i+5j+8k   B = -i-5j-4k We need to find A×B.A×B

Q: A 1.07 kg mass is at the center of a uniform spherical shell of mass 1.06 * 10 ^ 20 * kg and radius…

A: See below

Q: 2.467 is still wrong for the magnitude

A: A→= 1.7 × 10^6 km B→ = 1.3 × 10^6 km at angle of 70° north of east

Q: According to Kepler's third law of planetary motion, the mean distance D, in millions of miles, from…

A: The given relationship of Distance(D) and Time(P) is  D = 93P 2/3   For Pluto, the time P = 248…

Q: the following equation refers to V-pendulum experiment T4 = (44 L k/g²)-(8 m4L/g² )d, where : L:…

A: We have an equation that describes the time period (T) of a pendulum with the distance (d) between…

Q: f a planet with 2.3 times the mass of Earth was traveling in Earth's orbit, what would its period be…

A: Given data Mass of the planet is,M=2.3×ME Radius of the orbit of the planet is equal to radius of…

Q: A 5.0 m diameter solid aluminum sphere is launched into space from the surface of the earth. By how…

A:

Q: Let v(t) be the velocity (in m/s) of an accelerating vehicle (where t is time in seconds) that has…

A: Answer..

Q: Astronomers have observed a small, massive object at the center of our Milky Way galaxy. A ring of…

A: Given,diameter of the ring material orbits the massive object, d = 15 light yearorbital speed, v =…

Q: 4. Rose stands in front of a mirror and she looks at Jack through it. The perpendicular distances of…

A:

Q: 1-The following equation refers to V-pendulum experiment: Y=-14X+15 and T4 = (44 L k/g2)-(8n4L/g2…

A: Given : T4 = 4 π4Lkg2 - 8 π4Lg2dalso given that Y=-14X+15 Here,Y = T4 and X=d

Q: Suppose that, while lying on a beach near the equator of a far-off planet watching the sun set over…

A:

Q: You determine the average speed for your walking pace. If the measured distance of your trip is…

A: Given value--- distance = 100 +/- 0.5 . time = 60 +/- 0.3 . We have to find--- dv/v ?

Q: Astronomical observations of our milky way galaxy indicate that it has a mass of about 8x1011 solar…

A: 1 solar mass = 1.989e+30 kg 1 Light year = 9.461e+15 m Given, mass of milky way is M = 8x1011 solar…

Q: The change in the value of cg) at a height (h) above the surface of earth is same as at a depth (d)…

A: To find- Relation between (d) and (h). Given that- gd=gh Here, gh=acceleration due to gravity at…

Central Force

Central force is the force that acts along the center of mass of one body to the center of mass of another body. Its direction from or away from a point on a body to another is called the center of the force. Such forces include gravitational force between two massive objects or electrostatic forces between two charged particles. So from atoms to planets, the central forces play an important role in shaping our daily lives. One of the remarkable features of central forces is that they are conservative, i.e. the total energy of a central force system can always be expressed as a gradient of a potential energy function.