Physics question and answers for September 23, 2023
- Q consider a spacecraft in an elliptical orbit around the earth.At the low point, or perigee, of its orbit, it is 300 km above theearth's surface; at the high point or...
- Q A 63 kg man weighs himself at the north pole and at the equator.Assume the Earth is a perfectly spherical.1.a Which scale reading is higher? at the North Pole or...
- Q Having trouble with these:1. One of the important struggles of pioneeringastronomers was trying to understand how big our galaxy is, andwhere the Sun is located in our galaxy. Explain how...
- Q Captain Jack Sparrow is steering the Black Pearl during battle,and he needs to turn the ship around quickly. The helm (steeringwheel) of the Pearl has handles that extend to a...
- Q In a Young's double-slit experiment the wavelength of light usedis 469 nm (in vacuum), and the separation between the slits is 2.1× 10-6 m. Determine the angle that locates(a) the...
- Q a) Is the optical axis of a birefringent crystal simply a line or an address in space?Does it have direction and sense like an arrow?b) Explain what the crystals are:...
- Q Question 1. Explain, on the atomic level, the physical mechanismunderlying two of the three forms of magnetic materials describedin the text, paramagnetic, diamagnetic, and Ferromagnetic. 2.Aluminum is paramagnetic. Why won't...
- Q 1a. A car drives around a circular track of diameter 154 m at aconstant speed of 45.1 m/s. During the time it takes the car totravel 97 degrees around, what...
- Q A lamp is twice as far in front of a plane mirror as a personis. Light from the lamp reaches the person via two paths. Itstrikes the mirror at a...
- Q The Sun has an apparent magnitude of -26.74. The closest starsystem to us, Alpha Centauri, has an apparent magnitude of +0.01and a luminosity of 1.1519 times that of the Sun....
- Q Prove that the field strength inside the Faraday cylinder far fromits ends is zero. ??
- Q Say I rolled a marble down a funnel so that it essentiallyspiralled into the center and fell through the funnel hole. Howwould you calculate the number of revolutions around the...
- Q A horizontal spring with a spring constant of 190 N/cm iscompressed 6.3 cm. A wooden block with a mass of 1.5 kg is placedin front of and in contact with...
- Q When serving, a tennis player hits the ball horizontally. With aspeed of 29.12 m/s. What minimum height, H (in m) from which theball must be launched to just clear the...
- Q A 1.9 kg block slides along a horizontal surface with acoefficient of kinetic friction μk = 0.30. The block has a speed v= 1.4 m/s when it strikes a massless...
- Q Two cars approach an ice-covered intersection. One car, of mass1.22 103 kg, is initially traveling north at 10.6 m/s. The othercar, of mass 1.66 103 kg, is initially traveling east...
- Q A syringe which has an inner diameter of 0.60mm is attached toa 25-gauge needle with an inner diameter of 0.25 mm. A nurse usesthe syringe to inject an ideal fluid...
- Q A spring-mass system has a spring constant of 3 N/m. A mass of 2kg is attached to the spring, and the motion takes place in aviscous fluid that offers a...
- Q A 110 cm3 box contains helium at a pressure of 1.60 atm and atemperature of 100 ∘C. It is placed in thermal contact with a 220cm3 box containing argon at...
- Q 1. In uniform circular motion, which of the following areconstant:a. speedb. velocityc. angular velocityd. centripetal acceleratione. magnitude of the net force
- Q If 65.0 L of oxygen at 19.0 ∘C and an absolute pressure of 2.35atm are compressed to 49.6 L and at the same time the temperatureis raised to 58.5 ∘C,...
- Q Consider a liquid of argon (a noble gas) and the liquid ofwater. Which would have a higher surfacetension?  Why?
- Q If you were conducting the wire and compass experiment (Part A) near the equator instead of Oregon, would it be necessary to use more or less wire current to cause...
- Q 1. A rotating top has a scratch 0.05 m from the vertical axis ofrotation. In the time it takes the top to rotate 81 degrees, itrotates __ radians or __...
- Q 2) Momentum and Newton's Second Law: Impulse(a) A block of wood is struck by a bullet. Is the block morelikely to be knocked over if the bullet embeds itself in...
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