Physics question and answers for July 31, 2023
- Q Two copper plates 0.50cm thick have a 0.10mm sheet of glasssandwiched between them. One copper plate is kept in contact withflowing ice water and the other is in contact with...
- Q A rotating wheel requires 2.97-s to rotate through 37.0revolutions. Its angular speed at the end of the 2.97-s interval is97.0 rad/s. What is the constant angular acceleration of the wheel?_____...
- Q A 45.3-cm diameter disk rotates with a constant angularacceleration of 2.30 rad/s2. It starts from rest att = 0, and a line drawn from the center of the disk to...
- Q A planet of mass 6 × 1025 kg is in a circular orbitof radius 4 × 1011 m around a star. The star exerts aforce on the planet of constant...
- Q Starting from the 2D time-independent Schr ̈odinger Equation,and using your knowledgeof the 1D harmonic oscillator, write down the normalizedground-state and the firstexcited state, with both position and time dependence included.Come...
- Q Three infinite straight wires are fixed in place and alignedparallel to the z-axis as shown. The wire at (x,y) = (-13.5 cm, 0)carries current I1 = 3.2 A in the...
- Q a) Determine the mass of water vapor, initially at 130 ° C,needed to heat 200 g of distilled water in a 100 g glass container,to go from 20 ° C...
- Q An infinitely long hollow cylinder of radius R is carrying auniform surface charge density σ (φ).(a) Determine the general form of the solution of Laplace’sequation for this geometry.(b) Use the...
- Q Derive the expression for the time averaged heating in the metalin which AC current of frequency ω flows – use the expression forthe AC conductivity and P= ⋅EJ relation for...
- Q Draw an experimental setup in the Laboratory in which you areworking, where only interference is observed. Explain why you useeach element you use in the setup.
- Q A person walks first at a constant speed of 4.90 m/s along astraight line from point circled A to point circled B and then backalong the line from circled B...
- Q A gymnast is performing a floor routine. In a tumbling run shespins through the air, increasing her angular velocity from 3.00 to4.10 rev/s while rotating through two-thirds of a revolution....
- Q There are a number of reasons why professional astronomerslocate their telescopes on the tops of remote mountains. List twoof those reasons.
- Q Which statement below is most precise?a. Deceleration means that the acceleration is negativeb. Acceleration tells us how quickly the speed changesc. When the acceleration and the velocity have the same...
- Q This all counts as 1 question in class because it's supposed tobe already known. So please answer all of them. I just want to besure I'm right.Question 1Which of the...
- Q Let's say you want to produce a (roughly) uniform electric fieldusing a very large nonconducting sheet. However, you still want tobe able to access the regions above and below the...
- Q 1-state the relationship between a wave's velocity wavelengthand frequency?2- What is the principle of superposition?3- The distance between two nodes or two antinodes in a standingwave is …………………. Wavelength?4- -...
- Q A crate of mass 100.0 kg rests on a rough surface inclined at anangle of 37.0° with the horizontal. A massless rope to which aforce can be applied parallel to...
- Q An RLC series circuit consists of a 450-Ω resistor, a 3.00-mFcapacitor, and a 1.00-H inductor. The circuit is driven by a powersource that oscillates at 20.0 Hz and has an...
- Q a-How much heat is required to convert 5.0 kg of ice from atemperature of -10 C to water vapor at a temperature of 220F? b-Youhave 200 g of coffee at...
- Q Having aced your introductory physics course, you are hired as asummer intern at NASA. You are sent as part of a team to explorethe possibility of mining iron from a...
- Q A 5.00-kg bullet moving withan initial speed of Vi= 400 m/s is fired into and passesthrough a 1.00-kg block as shown in the Figure. The block,initially at rest on a...
- Q white printer paper have an equal mass, but unequal surfaceareacoffee filters have an equal surface area with unequal inmasshow does mass and surface area affect the free fall of anobject?...
- Q 1. Compute the mechanical work done by the helicopter on liftinga 1,200-kg house to aheight of 800m. Show all your work.2. What maximum speed (in miles per hour) can a...
- Q A railroad car of mass 2.20 ✕ 104 kg moving at 5.00m/s collides and couples with two coupled railroad cars, each ofthe same mass as the single car and moving...
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