A starship blasts past the earth at 2.0 x 108 m/s. Just after passing the earth, the starship fires a laser beam out its back. With what speed does the laser beam approach the earth?

Q: Human body temperature is about 310 K (3.10 ✕ 102 K). At what wavelength (in nm) do humans radiate t...

A: Using Wein's displacement law    Where T = Temperature of an object              = Wavelength of ma...

Q: Calculate the uncertainties dr = V(r2) and dp = Vp?) for a particle confined in the region -a a, r ...

A: As we can see the given wave function is normalised and in outside region it's zero. Therefore This...

Q: Construct Your Own Problem Consider two people pushing a toboggan with four children on it up a snow...

A: Given Construct Your Own Problem Consider two people pushing a toboggan with four children on it up ...

Q: What is the resolving power of an 8-inch telescope (if necessary, you may assume λ=550 nm)? By the w...

A: Given: The wavelength of light is 550 nm. The diameter of the aperture of the telescope is 8 in. The...

Q: The force F = (600i + 300j – 600k} N, acts as shown. Please answer the following questions: a) Deter...

A: Due to time constraint, the first two parts of this problem have been solved. (a) Given: The force a...

Q: 5. An automobile enters a turn whose radius is R. The road is banked at an angle 0, and the coeffici...

A:

Q: What happened, we use voltmeter for purpose of am-meter?

A: Answer:   Introduction: It is to introduce that the given voltmeter and ammeter is explained as foll...

Q: The light spots that form a circle around the outside of the fountain as shown come from a light sou...

A: Total internal Reflection: When light incident from a denser medium to rarer medium (at boundary) wi...

Q: an airplane is an example of what type of model

A: Answer:   Introduction:   The airplane is also known as aeroplane is a fixed -wing type aircraft tha...

Q: The acceleration of an object increases linearly from 4 fps2to 12 fps2in 9 seconds. By the end of 9s...

A:

Q: 2/(2a) A spherically symmetric charge distribution has density p(r) = Q- 4Ta2r where a is a constant...

A: Given: The volume charge distribution ρ(r) = Q 14πa2r e-r22a  

Q: A flashlight is used to propel an 85 kg reflective load in space. If the flashlight emits 1W of ligh...

A: Given values, Mass of load, m=85 kg Power of flashlight, P=1 W time, t=1 hour=3600 s Initial velocit...

Q: Find the density matrix for a partially polarized incident beam of electrons in a scattering experim...

A: Given the fraction (f) of the electrons are polarized along the direction of the beam and (1-f) frac...

Q: 5. A ball rolls downhill with a constant acceleration of 4 m/s2. If it started from rest, how long w...

A: v=u+att=v-ua

Q: As the drawing illustrates, two disks with masses m1 and m2 are moving horizontally to the right at ...

A:

Q: Consider a metal sphere falling through a liquid such as water.  Which of the following spheres will...

A: The forces which are acting on an object falling in water are gravitational force downwards and drag...

Q: Calculate the phase velocity of the wave inside the waveguide.

A: The phase velocity of wave in wave guide is give as   Vp = c/√1-(free space wavelength/cut-off wavel...

Q: Archaeologists can use instruments that measure small variations in magnetic field to locate buried ...

A: Given: Need to explain how this leads to a measurable magnetic field variation over a buried wall by...

Q: Explain briefly instable state of the wave observed from the frame indicated in the diagram below.

A: The above graph is a velocity function f0(v) varying with velocity. From the graph, it is clear that...

Q: solution of schrondinger equation for hydrogen atom.

A: The Schrodinger equation is given as: -h2π212μ∇r2ψr→+Vrψr→=Erψr→      ............1 Let the wave fun...

Q: Image and Explanation needed

A: Concept Used Vectors can be added together in step-wise fashion using a head-to-tail diagram. The fi...

Q: A particle accelerator is three kilometers long and accelerates electrons ( mass of electron = 9.11 ...

A: prelativistic=γm0v=11-vc2m0v=11-0.9999999997cc29.1×10-31kg0.99999999973.0×108 m/s=1.11×10-17 kg·m/s

Q: Assume that a 10-km asteroid hits the earth at about 20 km/s Computer simulations suggest that for ...

A: let  mass of asteroids be m kg so 3m mass of water gets vaporised ,   let m mass of water takes Q am...

Q: Find the average energy E for: (a) An n-state system, in which a given state can have energy 0, e, 2...

A: Solution:   To calculate the Average energy we have to write the partition function as below:   z=∑i...

Q: Find the maximum force F that can be applied to the wedge such that m does not start to move up the ...

A: Let us discuss about the forces acting on the small block (m). considering the relation of block m a...

Q: A car starts from rest and accelerates for 10 seconds at 3.5 m/s2. What is its final velocity?

A:

Q: A thermometer is removed from a room where thetemperature is 70° F and is taken outside, where the a...

A: The differential equation for Newton’s cooling law can be expressed as, Here Ts is the temperature ...

Q: A helium nucleus (mass = 6.64×10−27kg, net charge = +2e)is fired directly toward a spherical conduct...

A: Given: Mass of Helium nucleus is m=6.64*10-27kg Net charge q=+2e q=2*1.6*10-19Cq=3.2*10-19C Radius R...

Q: Dielectric elastomers are used to create voltage-dependent capacitors. These elastomers contract whe...

A: F=QAKε0, where F is the compressive force applies to the dielectric when the plates have opposite ch...

Q: Explain Quantum's Particle in the box?

A: According to quantum mechanics, the particle in a box means that a particle moves freely within a im...

Q: Show your all calculation

A:

Q: Please show work

A: Given: Electron number density ne = 1011 m-3. Temperature of magnetosphere T = 1100 K. Time between ...

Q: Car A is traveling at the constant speed of 44 km/h as it rounds the circular curve of 345-m radius ...

A: Given, VA=44 kmhVB=65 kmhr=345 m= distance between A and B  

Q: A child is playing on a hill with a cardboard box. Thecombined mass of child and box is ? = 120 kg. ...

A: (a) A child is playing on a hill with a cardboard box. Thecombined mass of child and box is ? = 120 ...

Q: An exposure using 10 mAs and 70 kVp results in a DI of +2.8. If you were going to fix this overexpos...

A: Given: Exposure mAs = 10 mAs. Peal voltage Vp = 70 kVp. Diagnostic image DI = +2.8. Let exposure tim...

Q: Write one possible & complete QM Hamiltonian operator for a particle of mass, m, moving in 3D (x,y,z...

A: Introduction: The Hamiltonian of a system is an operator corresponding to the total energy of that s...

Q: Force F acts at point A.   (a) Determine the moments force F exerts about points B and C in ft · lb....

A: Given: