Physics question and answers for August 02, 2023
- Q A pair of radio transmitters separated by 118m along anorth-south line each transmit an in-phase 5.55MHz wave. Usingsmall angle approximations, the smallest angle (with respect to theeasterly direction from the...
- Q A basketball is thrown vertically up from a 1.6‑m height with aninitial speed v0 = 23 m/s. At what speed will the ballhit the ground?The speed of the ball, v1...
- Q You put a can of water into a fire. The can heats up, and thewater remains liquid. Neglecting the tiny change in volume due tothermal expansion, the change in the...
- Q Four lawn sprinkler heads are fed by a 1.7 cm diameter pipe. Thewater comes out of the heads at an angle of 40 ∘ to the horizontaland covers a radius...
- Q Two harmonic waves of pulsation m and amplitude aoverlap at a point P. It is observed that also the resulting wavehas amplitude equal to a.> Calculate the phase shift Δφ...
- Q a.Explain what the Rutherford dispersion consists of and derive therelationship between the impact parameter and the dispersed angle.b. Write and explain each variable in the equation for theRutherford dispersion.c. List...
- Q Question 2: In a steam power plant operatingaccording to the ideal intermediate superheated Rankine cycle,water vapor enters the high pressure turbine at 8 MPa pressure and500 oC temperature and expands...
- Q A police siren of frequency is attached to a vibrating platform.The platform and siren oscillate up and down in simple harmonicmotion with amplitude and frequency . (a) Find the maximum...
- Q (a) What is quantum tunneling?(b) Based on the concept of quantum tunneling, describe theworking principle of a scanning tunneling microscope.(c) Explain what is quantum confinement?(d) You have a metallic nanowire....
- Q Cut the copper cubes to a volume of 0.5 cm^3. If the copper hasa density of 8.96 g / cm^31 If 1 copper atom has 1 Conduction electron, calculate the...
- Q When two unknown resistors are connected in series with abattery, the battery delivers 230 W and carries a total current of5.00 A. For the same total current, 55.0 W is...
- Q A parallel-plate air capacitor of area A=12.0cm2 andplate separation d=3.80mm is charged by a battery to a voltage66.0V. If a dielectric material with kappa=3.60 is inserted so thatit fills the...
- Q If the net force on an object is zero thenGroup of answer choicesthe object's speed can change.the object must be at rest.the object's speed is constant but its direction might...
- Q A) Electrons accelerated by a potential difference of 13.16 Vpass through a gas of hydrogen atoms at room temperature. Calculatethe wavelength of light emitted with the longest possiblewavelength.B) Calculate the...
- Q Heat equation: Arbitrary temperatures at ends. If the ends x =0 and x = L of the bar in the text are kept at constanttemperatures U1 and U2, respectively. The...
- Q A boy standing on the ground close to a building throws a ballvertically upward. From his measurements of the maximum height,y-max, to which the ball rises and the time required...
- Q d. Draw a diagram that illustrates how nuclei change duringnuclear fusion. Write 2 - 3 sentences describing the process ofnuclear fusion, including where it occurs and how the energyreleased can...
- Q Colby participates in a rocket-launch competition in her highschool. The goal is to launch a rocket with mass m = 2.3 kg [5 lbs]to a height no less than 50-m...
- Q A bead slides down along a piece of wire that is in the shape ofa helix. The helix lies on the surface of a vertical cylinder ofradius r, and the...
- Q Could a fuel cell which combines H2 and O2 to form H2O andproduce electricity directly be more efficient than a Carnot heatengine attached to an electric generator? Explain.
- Q A 1.5 kg ball is thrown vertically upward with an initial speedof 15 m/s. If the initial potential energy is taken as zero, findthe ball’s kinetic, potential, and mechanical energies...
- Q 1.What is the First Condition ofEquilibrium?2.Explain what Pythagorean Theorem is and givethe formula. ?3.The Scalar Product or otherwise knownDot Product of two vectors is the sum of theproducts of their...
- Q 1.The Vector Product or otherwise knowCross Product of two vectors is itself anothervector. When is the product zero?2.How does one find the resultant vector ofmultiple vectors added together?3.The change in...
- Q 1. calculate the velocity a person would have if they fired agun. The person has a mass of 172 kg, including the gun, ammo, andthemselves. and is standing still when...
- Q What is meant by the capacitive current in a liquid dielectricwhen using AC to determine the resistivity as explained in thesentence below:\"Alternating current resistance measurements cannot successfullybe made when the...
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