how doppler effect  has helped some professionals like (1) doctors and (2) astronomers in their field of work

Q: To illustrate that the length of a smooth space curve does not depend on the parameterization used t...

A: The length of a parametrized curve r(t)=x(t)i +y(t) j + z(t) k is given by, ∫   ds=∫t1t2dx(t)dt2+dy(...

Q: You have a faculty position at a community college and are teaching a class in automotive technology...

A: Introduction: The ignition circuit starts at the battery and flows to the ignition switch. It contro...

Q: A coaxial cable is formed by a long, straight wire and a hollow conducting cylinder with axes that c...

A: (a) Given: The net charge per unit length on the wire is 3λ0. The net charge per unit length on the ...

Q: An athlete in the Olympic game covers a distance of 100m in 10s. His kinetic energy can be estimated...

A: Option d correct

Q: Hi I need help with the problem below.

A: Given: The weight of the cyclist and the bike is 52.9 kg. The inclination of the ramp is 30°. The re...

Q: 120V series-wired ornamental lightbulbs, Figure 1. Suppose you have a string of 48bulbs, each one wi...

A: Given: The voltage of the circuit is V=120 V. The number of bulbs is nb=48. The resistance of each ...

Q: A small steel block and a magnet rest on a horizontal frictionless table. The steel block weighs 0.0...

A: The steel box experiences a force of 0.145 N at the point x=26 cm from the magnet. It starts from th...

Q: Artificial gravity is a must for any space station if humans are to live there for any extended leng...

A:

Q: The small piston of a hydraulic lift has a cross-sectional area of 3.5 cm2 and its large piston has ...

A:

Q: A 100-lbm block of a solid material whose specific heat is 0.5 Btu/lbmR is at 80∘  ∘  F. It is heate...

A:

Q: A small aircraft whose speed in still air is 200 kmh-1 heads north at that speed. A  wind blows due ...

A: Triangle Law of Vector Addition According to the triangle law of vector addition, if two vectors (bo...

Q: Find the true statement. a) Displacement current and conduction current are never equal b) The curre...

A: B is correct

Q: The unit of energy is S. I. units is

A: Joule

Q: A satellite revolves very near to the earth surface. Its speed should be around? a) 5km/s b) 8km/s c...

A: The correct Answer is B.  8 Km/s

Q: Three charges are at the corners of an equilateral triangle, as shown in the figure below. Calculate...

A: Given: Charge q1=9.00 μC=9.00x10-6CCharge q2=7.50 μC=7.50x10-6CCharge q3=-4.50 μC=-4.50x10-6C

Q: 3. Which of the following questions are testable using scientific experimentation? Identify the depe...

A: Testable questions- Testing means nothing but investigating about anything that we can prove about. ...

Q: Two racing cars of masses m1 and m2 are moving in circle of radii r1 and r2 respectively. Heir speed...

A: 1:1

Q: A gas at one atmosphere and having volume 100ml is mixed with another gas of equal moles at 0.5atm a...

A: Option d

Q: Represent the resultant of the three forces and couple by a force-couple system located at point A. ...

A: I had solved a similar question earlier. Here is the solution. Just alter the figures.

Q: Which of the following can be used to make seats in an aircraft? a) Magnesium alloy sheets b) Graphi...

A: Option a

Q: In a tube "U" we have water (density equal to 1,000 kg / m3) and a strange fluid. If the height at w...

A: The pressure exerted by fluid is given by the formula, P=ρgh             (1)h: height of the columng...

Q: A process, in which the gas is heated or expanded in such a way that the product of its pressure and...

A: In hyperbolic processes

Q: Qn 2

A: From a positive charge electric field lines point outward whereas for a negative charge electric fie...

Q: Advanced Physics Question

A: (1) Given: The charge density of the rod is +10 nCm. The point charge is of the magnitude +10 nC. In...

Q: Cheetahs can accelerate to a speed of 20.0 m/s in 2.50 s and can continue to accelerate to reach a t...

A: Given: Top speed of Cheetahs is 29.8ms. They can accelerate to speed of 20.0ms in 2.50s. From calcul...

Q: An electric field is  = sign(x)·(370 N/C), where sign(x) equals −1 if x < 0, 0 if x = 0, and +1 i...

A: Given Electric field E→  = sign (x) (370 N/C) Length (L)           = 24 cm = 0.24 m Radius (R)      ...

Q: d & e please and please tell me if my previous answers are correct, if it is an option

A: The first three answers provided here are correct. d. The electric field produced at a distance alon...

Q: Which statement describes how sound waves are transmit A Sound waves are transferred from particle t...

A: Sound Sound is mechanical energy that causes the sensation of hearing. They are defined as the vibra...

Q: 9-

A: Given: The exposure time is 9 hours. The intensity level is 90.0 dB. The diameter of the eardrum is ...

Q: Mirage is due to   A. unequal heating of different parts of the atmosphere B. magnetic disturbances ...

A: Option a

Q: F10-4. Determine the maximum shear stress in the 40-mm-diameter shaft. I50 mm 10 kN 4 kN 100 mm 6kN

A: Given :              Diameter d = 40mm

Q: a) Find the value for the constant po (including units), given that the total charge on the insulati...

A: Since we only answer up to 3 sub-parts, we’ll answer the first 3. Please resubmit the question and s...

Q: The charge and coordinates of two charged particles held fixed in an y plane are q1 =+3.0 µC, X1=3.5...

A: Given, there are two charged particle. q1=3 μC at x1=3.5 cm , y1=0.50 cm q2=-4 μC at x2=-2 cm , y2=1...

Q: A wheel of mass 8kg and radius of gyration 25cm is rotating at 300rpm. What is its moment of inertia...

A: A 

Q: why must the correct polarity be known when connecting equipment to a voltage source?

A: Most multimeters, including digital multimeters, can do this. Regarding alternating current in the c...

Q: Can a transformer be used with dc? Explain. What happens if a transformer designed for 120 V ac is c...

A: The transformer has coils that act as an inductor. The expression for the emf induced in the seconda...

Q: 8.For Spring mass damper system, m=1 Kg, k=1N/m, c=1/4 N.s/m, subjected to harmonic excitation force...

A: let us know if you need explanation.

Q: A shopper pushes a grocery cart by exerting a force on the handle at a downward angle of 32.0 degree...

A:   given,angle =320mass=26.5kgforce of friction =58.0N  

Q: Let a thin capillary tube be replaced with another tube of insufficient length then, we find water  ...

A: B option

Q: If mass-energy equivalence is taken into account when water is cooled to form ice, the mass of water...

A: Option

Q: 10. The height of a radio tower is 500 feet, and the ground on one side of the tower slopes upward a...

A:

Q: 2. Three objects each with a mass of M exert gravitational forces on each other. Which of the arrows...

A: Gravitational force is always attractive in nature. The formula to calculate the gravitational force...

Q: Two racing cars of masses m1 and m2 are moving in circle of radii r1 and r2 respectively. Heir speed...

A: 1:1   w=2π/TFor both cars, period of revolution T is same, so their angular speed w is also same.

Q: Find the wave function and its energy by solving the Schrodinger equation below for the three-dimens...

A:   We have given the Schrodinger equation; -ħ22m∂2∂x2+∂2∂y2 +∂2∂z2ψx,y,z = E ψx,y,zHere;∂2∂x2+∂2∂y2 +...

Q: How many forces are in the above free body diagram? 2k 3k RA

A: The free-body diagrams are the designs that provide us the relative magnitude (defined by the length...

Q: A Lamborghini Aventador SVJ, traveling at a constant speed of 280 ms-1 passes a police car at rest o...

A:

Q: For the system of four capacitors shown in the figure below, find the following. (Use C, = 7.00 µF, ...

A:

Q: Calculate the acceleration of a car that can go from rest to 100 km/h in 10s?

A:

Q: A coffee maker is rated at 1.60 kW, a toaster at 1.20 kW, and a waffle maker at 0.90 kW. The three a...

A: The power is given by the formula, P=IV     (1) Where P is the power, I is the current and V is the ...

Q: please explain your step

A: Gauss' law states that the the total electric field flux outside a volume is directly proportional t...