Physics question and answers for July 14, 2023
- Q A) What is the average number density of particles inside thebrown dwarf, given that the average mass per particle is about10^−24 gram? (Hint: The volume of a sphere of radius...
- Q 1- A magnet created when there is a current through a coil ofwire is considereda. electromagnet.b. a solenoid.c. polarized.d. all of the above2- The radii of the paths that ions...
- Q In the given circuit an inductor of L = 8.95-mH and a resistorof R = 17.9-Ω resistor are connected in series with a dc battery ofE = 8.80-V.What is the...
- Q 1. A flywheel is initially rotating at 30 rad/s and has aconstant angular acceleration. After 8.0 s it has rotated through460 rad. Its angular acceleration in rad/s is:2.Ten seconds after...
- Q What are the advantages for \"professional astronomers\" of theCassegrain design over the Newtonian design?
- Q A simple pendulum is constructed from a negligible mass thatdoes not stretch and a bob of mass 0.87kg that is essentially apoint mass. The length of the string is 1.43m....
- Q Write an extended paragraph of about 200 words on the future ofspace travel that describes:• New technology in space travel• Future space missions• Countries / organizations that are involved in...
- Q capacite 1: 7.3x10^-3 charge unit transfercapacite 2: 0. 1 C/vThat means equating the two capacitances gives theconversion factor for converting between these two different unitsof capacitance. Follow this course to...
- Q PLEASE ANSWER THE QUESTIONS WITH EXPLANATION.1 mm bug located at the near-point, 25 cm away from the lefteye. Includes the distance between the retina and lens in your eyeis 1...
- Q The study of our solar system and the universe hasexpanded greatly since we started sending probes into space. In aninformed discussion (provide references), explain the value ofspace exploration with regard...
- Q 2. G’s jokes are represented by 1 mole of a solid at temperatureT1 < 273K. They are so savage that when youput them in an ocean of mass M,initially at...
- Q For CdS in the wurtzite structure the lattice constants arespecified by a= 4.14 A and c= 1.62 a. Calculate the density of thecrystal and the volume of the primitive unit...
- Q 1) Jumper cables used to start a stalled vehicle oen carry a70-A current. How strong is the magnetic field 5.0 cm from onecable? Compare to the Earth’s magnetic field (5.0...
- Q 1. A 1 kilogram mass is attached to a spring with a springconstant of 4 N/m. Write the equation of motion if the spring isstretched 25 cm below the equilibrium...
- Q For something like Gamma Ray Spectroscopy, what do taking photopeak measurements give us? What does the Count vs Channel plot tellus?
- Q The mass m1 on a smooth table is connected to themass m2 which moves only in the vertical direction by aninextensible L length rope passing through a hole in the...
- Q A 16.3-kg block rests on a horizontal table and is attached toone end of a massless, horizontal spring. By pulling horizontallyon the other end of the spring, someone causes the...
- Q When considering buildings, it is important to identify thenatural frequencies of beams. The implication will be that rotatingequipment (e.g. pumps, compressors, washing machines, etc.) areselected so that the natural frequency...
- Q A mass weighing 10 pounds stretches a spring 3 inches. This massis removed and replaces with a mass weighing 20 pounds, which isinitially released from a point 4 inches above...
- Q In a bubble chamber experiment, the decay of a Σ+ particle intoa π+ particle and a neutron is observed when a 1.03 T magneticfield is applied perpendicular to the paths...
- Q I have an exame question about huygens ocular lenses, and it isasked to determine the equivalent focal distance . And then asks meto determine and draw the position of the...
- Q The RBE (relative biological effectiveness factor) for severaldifferent types of radiation is shown in the chart below. Type ofRadiation RBE X-rays and gamma rays 1.0 Beta particles 1.0 – 1.7Alpha...
- Q 1) Find the uncertainty in kinetic energy. Kinetic energydepends on mass and velocity according to this function E(m,v) =1/2 m v2. Your measured mass and velocity have thefollowing uncertainties     2.58 kgand   0.36...
- Q Provide some definitions and descriptions of the following objectswith diagrams if necessary1. White dwarf2. Rotational Curve3. HII region4. Virial Theorem5. Chandrasekar mass6. Critical cosmological density7. Gravitational wave8. Clusters of galaxies
- Q Abullet is firef horizontally into an initially stationary block ofwood suspended by a string and remains embedded in the block. Thebullets mass is m=0.0085kg while that of the block is...
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