About how many exoplanets have been detected? Group of answer choices 2 dozen a few hundred a few thousand a few million more than a billion

Q: If the inductance in the LR circuit below is increased by a factor of three and the current is…

A: Inductor offerers infinite resistance at t=0. ( Just after the switch is closed ) Resistance due to…

Q: What magnifying power is attained using a compound microscope with the following specifications:…

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Q: K Use the earthquake magnitude scale to answer the following question. Compare the energy of a…

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Q: An object (height = 8 cm) sits 18 cm in front of a convex mirror (focal length = -75 cm). Determine…

A: height of object (h) = 8 cm object distance (d) = 18 cm focal length of convex mirror (f) = -75 cm…

Q: A small charged sphere with a mass of 0,10 g carrying a charge of 4 nC is attached to a vertical…

A: Given, mass of the charged sphere, m = 0.10 g charge, q = 4 nC length, l = 0.10 m angle, θ= 30°

Q: An ant zig-zags back and forth on a picnic table as shown. The ant's distance traveled and…

A: From the figure The initial position of the ant is xo=40cm And then it travels towards left and its…

Q: Compute the Force using Newtons Law. mass = 2.29, à = (-) Rows: 1 Columns: 1 C

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Q: A linearly polarized electromagnetic wave with an electric field amplitude of 355NC What is the…

A: Amplitude of electric field (E) = 355  NC

Q: An airplane maintains a speed of 579 km/h relative to the air it is flying through as it makes a…

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Q: The current in an inductive coil changes at 30A /s and the back EMF is 3V Calculate the inductance…

A: Given value--- The current in an inductive coil changes at 30A /s. the back EMF is 3V. We have to…

Q: A golf ball is hit horizontally off the edge of a 29 m high cliff and lands a distance of 21 m from…

A: Write the given values with the suitable variables. h=29 md=21 m Here, h is the height of a cliff…

Q: 53. ssm Three forces act on a moving object. One force has a magnitude of 80.0 N and is directed due…

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Q: A string driven at a frequency of 156 Hz is observed to have a standing wave with 3 anti-nodes. What…

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Q: A bicycle with 20 -inch diameter wheels is traveling at 17 mi/h. Find the angular Speed in Rad/min.…

A: Given data:  Diameter (d) = 20 inch Speed (v) = 17 mi/h Required: The angular speed in rad/min and…

Q: 4. Suppose Tony is standing by the railway tracks, watching a train go past to the east at 25m/s. At…

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Q: unpolarized light is incident from the left, in which cases will some light get through?

A: In cases 1 and 3, the light is blocked by the adjacent horizontal and vertical polarizers. However,…

Q: Consider the circuit shown in the figure below, where C₁-9.00 F, C₂ 6.00 p, and AV- 18.0 V Capacitor…

A: We know , c1 = 9.0 uf , c2 = 6.0 uf and  del v = 18.0 v (a)  q = C1 * V              = 9 * 18…

Q: A coil of wire containing 800 circular loops with cross section of 60 cm² is placed between the…

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Q: The air in a tube open at both ends is made to vibrate in its fundamental frequency. One end of the…

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Q: 29. A major-league pitcher can throw a baseball in excess of 41.0 m/s. If a ball is thrown…

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Q: Two charges are separated by some initial distance. The first charge is set in place at the origin…

A: Let q1 and q2 be two charges. So, q1= 1.02 mC and q2= 1.91 mC and mass,  m = 750g = 0.75 Kg  Force…

Q: 1. ssm A car travels at a constant speed around a circular track whose radius is 2.6 km. The car…

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Q: The force between two charges 0.06 m apart is 5 N. If each charge is moved towards the other by 0.01…

A: Given, The force between two charges, F = 5 N distance between the charges, r = 0.06 m each charge…

Q: A muon formed high in the Earth's atmosphere is measured by an observer on the Earth's surface to…

A: Given, Distance measured by an observer on the earth surface , l=3.43km=3430 m Speed measured by an…

Q: The acceleration due to gravity, g. is given by (b) Is this change positive or negative? Agis ?…

A: In the following problem,  We have acceleration due to gravity as: g=GMr2

Q: 1. The distance between home plate and the pitcher's mound in baseball is 60.5 ft. In MLB, baseballs…

A: The Distance Between Home plate and Pitcher's Mound is D=62.5 ft Speed of MLB is given by: V=90…

Q: Neutron stars, such as the one at the center of the Crab Nebula, have about the same mass as our sun…

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Q: A 0.62-kg block attached to a spring with force constant 154 N/m is free to move on a frictionless,…

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Q: The two forces F₁ and F₂ shown in the figure (Figure 1) (looking down) act on a 16.0-kg object on a…

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Q: A suspended date that's able to pivot from the top seperates two liquids. There is a stopper that…

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Q: 71. ssm A 15-g bullet is fired from a rifle. It takes 2.50 X 10-3 s for the bullet to travel the…

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Q: A thin, metallic, spherical shell of radius a = 7.0 cm has a charge qa = 9.00×10^-6 C. Concentric…

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Q: wavelength

A: Compton wavelength is the quantum mechanical cutoff - the length scale below which quantum mechanics…

Q: y 4 m 60° 3 m À 20° B X

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Q: If the box is initially at rest at x = 0, what is its speed after it has traveled 16.0 m? Express…

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Q: How did you get the charges for the inner and outer shells for part a?

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Q: A radioactive material of 20gm has 12.5 years. Who much gm of the sample will remain after 20years?…

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Q: If you car averages 22.07 miles per gallon, how many miles would you expect to drive on 13.243…

A: Given value--- car averages 22.07 miles per gallon We have to find--- how many miles would you…

Q: 7.5: An 7.5: An isosceles prism Example refracting angle 179° and refractive index 1.5 is used as a…

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Q: For every 20 tables Melanie waits on, she makes 40 dollars in tips, how much would she make in tips…

A: Given: No. of tables = 20 Total amount made by Melanie = 40$

Q: is given an initial velocity of 42.1 m/s at an angle of 53.8 degrees with respect to the horizontal.…

A: Initial velocity = V0 = 42.1 m/s Angle = 53.8 degrees Final vertical velocity = Vy = 10.4 m/s

Q: Μ 10 Ω 50 Ω WWW 20 Ω

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Q: The energy a body has by virtue of its location is known as .

A: The energy a body has by virtue of its location /position  is known as potential energy. Ep.

Q: How much power can a horse deliver if it is continuously pulling 120 lb load for several hours

A: NO, a horse is capable of much greater peak effort. A robust human male can produce more than one…

Q: 1. Determine the reaction at point A and the tension force acting at the rope. Assuming that the…

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Q: Rachael is pulling a 47 kg box up a hill with a 40 degree angle above the horizontal at a constant…

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Q: Consider a ray incident on the end of a fiber-optic cable as illustrated in the figure below. In the…

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Q: 3. A ball is thrown vertically downward from a height of 240 feet with a velocity of 32 ft/s. How…

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Q: 2. The football season is beginning with mixed results for the Browns. Let's analyze a tackle in…

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Q: Find expressions for the electric field, as a function of the radius r, outside the shell (r > c).…

A: From gaussian law,.  Electric flux enclosed by any closed surface is equal to the net charge…