Physics question and answers for September 18, 2023
- Q A hollow sphere is released from the top of an inclined plane ofinclination theta. (a) What should be the minimum coefficient offriction between the plane and the sphere to prevent...
- Q Proof that the violation of the Kelvin-Planck statement leads tothe violation of the Clausius statement.
- Q Find the magnetic field on the z axis at z +8.0 cm if (a) thecurrents are both in the -x direction and (b) the current in thewire at y -6.0...
- Q A 23.0-kg child on a 4.00-m-long swing is released from restwhen the ropes of the swing make an angle of 25.0° with thevertical. (a) Neglecting friction, find the child's speed...
- Q In class, you have seen how to calculate the maximum speed for acar to go around a flat curve (with friction), and for a bankedcurve (without friction). Here, you will...
- Q A sinusoidal electromagnetic wave of frequency 6.10
- Q A nuclear power plant has an overall efficiency of 31% and apower output of 800MW. For one year operating atfull capacity, calculate a) the number of joules produced; b) thenumber...
- Q Is there any electric field inside a perfectconductor? Is there any conduction current inside a perfectconductor? Can static magnetic fields exist in a perfectconductor?
- Q A charge of 2.20 µC is uniformly distributed on a ring of radius9.0 cm. Find the electric field strength on the axis at thefollowing locations.(a) 1.2 cm from the center...
- Q A doppler meter of frequency 3 MHz (accurate to +/ - 10Hz) is used to monitor the heart rate of a fetus in early pregnancy(8 – 10 weeks). Determine the...
- Q Chickens having a mass of 5 kg are immersion frozen in propyleneglycol at -30°C (Ï=1068 kg/m^3). If the volume of each vacuumpackaged bird is about 6000 cm^3, what force must...
- Q A proton moves through a uniform magnetic field givenby  B→=(5.52i^−10.0j^+20.9k^) mT. At timet1, the proton has a velocity given by  v→=vxi^+vyj^+(2.19â¢â€‰â€‰km/s)k^ and the magnetic force on the protonis   F→B=(3.69×10−17â¢â€‰N)i^+(2.03×10−17â¢â€‰N)j^ . (a)At that...
- Q In the last lab, we learned how an AC electromagnetic field canproduce circulating eddy currents within a bulk conductor, such asa ferromagnetic core inside a coil. These eddy currents requireenergy...
- Q A 5.00 kg lead sphere is dropped from the top of a 60.0-m-tallbuilding.Part AIf all of its kinetic energy is converted into heat when it hitsthe sidewalk, how much will...
- Q 6. A water slide can be considered to be frictionless. The topof the slide is 4.2 m above the bottom of the slide. Riders exitthe slide with a horizontal velocity....
- Q 1.20cm tall object is 50.0cm to the left of a diverging lens(lens 1) of focal length of magnitude 40.0cm. A second converginglens (lens 2) of focal length 60.0cm, is located...
- Q A 1300-kg rocket has a net propulsion force of60 kN (kiloNewtons). Over a short time period, ituniformly speeds up from an initial velocity of 40m/s to a final velocity of...
- Q in a similar setup to the equilibrium lab, you place the fulcrumat the 25 cm mark on a uniform meter stick with mass 150g. Then youhang a mass #1 of...
- Q 9. 2 kg glider is traveling toward the right with a speed of 1m/s on an air track. A 3 kg glider is traveling on the same trackto the left...
- Q A 1.00 kg , horizontal, uniform tray is attached to a verticalideal spring of force constant 195 N/m and a 285 g metal ball is inthe tray. The spring is...
- Q Two manned satellites approaching one another at a relativespeed of 0.150 m/s intend to dock. The first has a mass of 4.50 ✕103 kg, and the second a mass of...
- Q A 1.00-cm-high object is placed 3.95 cm to the left of aconverging lens of focal length 9.00 cm. A diverging lens of focallength −16.00 cm is 6.00 cm to the...
- Q On a frictionless horizontal air table, puck A (with mass 0.245kg ) is moving toward puck B (with mass 0.373 kg ), which isinitially at rest. After the collision, puck...
- Q A pendulum clock has a heavy bob supported on a very thin steelrod that is 1.00000 m long at 21.0 ∘C.a)To 6 significant figures, what is the clock's period? Assumethat...
- Q A) You are given a dye with an excitation maximum of 358 nm andan emission maximum of 461 nm, and your fluorescence microscope hasfluorescence cubes with the filters below. Do...
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