Physics question and answers for August 07, 2023
- Q A straight metal wire is placed between the poles of amagnet, as shown in the figure. Magnetic field is uniform in thespace between the poles. If there is a current...
- Q As shown below, a 100 kg student is compressed 50 cm on a springwith a spring constant of k = 80,000 N/m. He is on top of a 10 mfrictionless...
- Q 1. A person standing on Earth drops a ball. At the same time,a person standing at the bottom of a spaceship accelerating at9.8m/s^2. In the absence of any significant field...
- Q A cooling fan is turned off when it is running at 840 rev/min .It turns 500 revolutions before it comes to a stop.1.) What was the fan's angular acceleration, assumedconstant?2.)...
- Q A) A 12.0-g bullet is fired horizontally into a 113-g woodenblock that is initially at rest on a frictionless horizontalsurface and connected to a spring having spring constant 149 N/m.The...
- Q Explain and solve the following physics question.An alpha particle with kinetic energy 14.0 MeV makes a collisionwith lead nucleus, but it is not \"aimed\" at the center of the leadnucleus,...
- Q A rider on a Ferris wheel shown below travels at a constantspeed. Is the rider’s apparent weight of the rider greater at thetop or the bottom? Explain using physical reasoning...
- Q Calculate the length of a Kerr cell using carbon disulphiderequired to produce half wave retardation for an applied voltage of30kV. The electrodes of this cell have a separation of 1.5...
- Q An elevator at the bottom of a 80 foot shaft weighs 1500 pounds.The 80 foot cable that lifts the elevator weighs 400 pounds. Assumethat the cable has uniform weight over...
- Q Create a plot comparing the force applied to an object versusthe angle at which the force is applied. Alos, plate describe thegraph in paragraph form.
- Q A circular coil (radius = 0.40 m) has 160 turns and is in auniform magnetic field. If the orientation of the coil is variedthrough all possible positions, the maximum torque...
- Q A tourist being chased by an angry bear is running in a straightline toward his car at a speed of 3.36 m/s. The car is a distanced away. The bear...
- Q Consider a stationary solution of the Schrodinger Equation withpositive energy E for a particle with mass m in the followingone-dimensional potential: V (x) = 0 for |x| > a and...
- Q find an equation for the range (defined as the xdisplacement of the projectile when it reaches y = 0) for a cannonfiring from y = 0. Leave everything as variables,...
- Q ThermodynamicsWhat is the difference between internal energy andenthalpy?a. Give a definition for each quantityb. Give an example of when focusing on internal energy would beespecially relevantc. Give an example of...
- Q Consider an equilateral triangle, inscribed in a circle ofradius a, with a point charge q at each vertex. The electric fieldis zero at the center, but surprisingly there are three...
- Q Consider that you have a water park and a slide with no frictionin it . Park visitors slide a vertical distance hh down thewaterslide in a sitting position. When they...
- Q How can I see that the the luminosity of the sun is 3.828×1026 Wby looking at the HR diagram?
- Q Light is incident upon air-water interface (n=1.33). Calculatethe Brewster and critical angles for both internal and externalreflections. In each case, distinguish between polarization modes.Calculate the reflectance and transmittance of water...
- Q Consider a black body of surface area 20.0 cm^2 andtemperature5 000 K. (a) How much power does it radiate?(b) At what wavelength does it radiate most intensely?Find the spectral power...
- Q Question 5 a. Explain why liquids in a container have ameniscus. Include a discussion of all relevant forces in youranswer and give examples of different forms of meniscus. [4 marks]b....
- Q Three particles A, B, and C with masses mA=2mB=mC are arranged(in that order) in a straight line. Initially, B and C are at resta distance L apart, and A is...
- Q A ball, which is initially at rest, starts rotating around afixed point. The ball has a constant angular acceleration. You needto know that the radial acceleration of the ball aradarad...
- Q You must provide a brief description of the obstacle you design,highlighting the physical concepts involved and explicitly statingthe relevant formulas that are at work. If there’s a specificstrategy that would...
- Q A small block with mass 1.50 kgkg is placed against a lightspring that is compressed 0.250 mm. The spring has force constant50.0 N/mN/m . The block and spring are released...
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