Physics question and answers for September 12, 2023
- Q . Charge q1= 1.80*10-8 C is placed at the origin O. Charge q2 =-7.20*10-8 C is placed at point A ( x =0.180 m) as shown in thefigures. a.A charge...
- Q 1.  Two 3 kg physical science textbooks on a bookshelf are separated by 0.25 m. What is the force of gravitationalattraction between the books?   2. What is the force of gravity between...
- Q A 2,200-kg car is moving down a road with aslope (grade) of 14% at a constant speed of 11 m/s. What is thedirection and magnitude of the frictional force?(define positive...
- Q On a Saturday morning, pickup trucks and sport utility vehiclescarrying garbage to the town dump form a nearly steady processionon a country road, all traveling at21.8 m/s. From one direction,two...
- Q What is the difference between entropy, enthalpy, and heattransfer?
- Q A 145 g mass attached to a horizontal spring oscillates at afrequency of 5.50 Hz. At t = 0s, the mass is at x = 6.60 cm and hasvx =−...
- Q Pardon me for my stubborn classical/semiclassical brain. But Ibet I am not the only one finding such description confusing.If EM force is caused by the exchange of photons, does that...
- Q A block of mass m1 = 2.9 kg initially moving to the right with aspeed of 4.3 m/s on a frictionless, horizontal track collides witha spring attached to a second...
- Q Two boxes (m1 = 70.0kg and m2 = 51.0kg ) areconnected by a light string that passes over a light, frictionlesspulley. One box rests on a frictionless ramp that rises...
- Q In a quarter-mile drag race, two cars start simultaneously fromrest, and each accelerates at a constant rate until it eitherreaches its maximum speed or crosses the finish line. Car A...
- Q A 3.71 kg ball of clay is traveling straight north with a speedof 24.8 m/s, collides with a 3.65 kg ball of clay travelling straiteast with a speed of 23.4...
- Q A person with axial hypermetropia has a lens-retina distance of1.9 cm and the maximum optical power of their eye is the same asthat for a normal person.A) what is the...
- Q A steel ball of mass 0.920 kg is fastened to a cord that is 34.0cm long and fixed at the far end. The ball is then released whenthe cord is...
- Q Why are diffraction gratings used to measure wavelength of lightinstead of double slits?
- Q An electron is accelerated inside a parallel plate capacitor.The electron leaves the negative plate with a negligible initialvelocity and then after the acceleration it hits the positive platewith a final...
- Q 3)When a power source like a battery is connected to a circuit,an electric field pushes electrons within the conducting wirescausing them to flow. The electric field exists due to an...
- Q 3) A soccer ball is kicked with an initial horizontal speed of 8m/s and an initial vertical speed of 6m/s. Identify the following quantities and include one shortsentence to explain...
- Q A wheel with a weight of 395 N comes off a moving truck androlls without slipping along a highway. At the bottom of a hill itis rotating at an angular...
- Q Consider a spacecraft in an elliptical orbit around the earth.At the low point, or perigee, of its orbit, it is 300km above theearth's surface; at the high point, or apogee,...
- Q Two converging lenses with focal lengths of 40 cmand 20 cm are10 cm apart. A 2.0 cm -tall object is 15 cm in front of the 40 cm-focal-length lens.Calculate the...
- Q A Geiger–Muller tube is a type of gas‑filled radiationdetector. It can detect particles like X‑rays, alpha particles, andbeta rays (electrons). This is useful in quantizing the activity ofa radioactive source...
- Q Physics Question:A wheel has a radius of .5 m and a moment of inertia I = 3kgm^2. It is rotating at 20 rev/s about an ais through its centerwhen a...
- Q 1. You made two determinations of the wavelength of the brightgreen mercury line, one based on the first order interference andthe other based on the second order interference. Which one...
- Q A 1500 kg automobile travels at a speed of 85 km/h along astraight concrete highway. Faced with an emergency situation, thedriver jams on the brakes, and the car skids to...
- Q The kinetic energy of a particle is equal to the energy of aphoton. The particle moves at 6.1% of the speed of light. Find theratio of the photon wavelength to...
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