Physics question and answers for October 09, 2023
- Q A mass (m) with speed (v) experiences a perfectly elasticcollision with an initially stationary mass (M). What is the ratioof the masses (m/M) if after the collision, m and M...
- Q A nonconducting sphere 1.6 m in diameter with its center on thex axis at x = 4 m carries a uniform volume chargeof density Ï = 5.4 µC/m3. Surrounding thesphere...
- Q Carla and Jenny are arguing about whether or not it is possibleto escape the gravitational field of the Earth. Carla shows Jenny asystem where mass m is rE (not theEarth's...
- Q How much energy is required to change a60 g ice cube from ice at -25
- Q The speed of sound is finite. This means that it has a specific,distinct speed, that we can calculate. Explain an every day exampleof how we know that the speed of...
- Q Blocks with masses of 3.0 kg, 4.0 kg, and 5.0 kg are lined up ina row on a frictionless table. All three are pushed forward by a19N force applied to...
- Q What is the theoretical minimum frequency a photon must have inorder to create a photoelectron? Show work to support youranswer.
- Q One of the difï¬culties of the Bohr model was that it assumes theexistence of stationary orbits. Why was this problematic from aclassical physics point of view? How does the solution...
- Q describe application in real life for moment inertia in ( thin rod)and (hoop or cylindrical shell) and ( circular disc or cylinder)and (sphere) and (spherical shell) ?
- Q As the temperature of a metal rod varies, so does the resistanceand the dimensions of the rod. If a copper rod has a resistance of4.78 Ω at 20.0°C, determine the...
- Q Snell's Law and the Law of Reflection explain how light isredirected when it encounters a surface between two media. In theextreme, light may only reflect at a boundary, and go...
- Q You have a massless, ideal spring with an unknown springconstant ?. You hang the spring from the ceiling. You then attach amass (? = 21.0 kg) to the spring, which...
- Q Suppose you’re eating in yet another restaurant where the dishesare shared at the table and all placed uniformly on a rotatingdisk-like surface. Model this surface as a thin disk of...
- Q A container has a flat bottom made of aluminum that is 1.18 -cmthick. The walls are insulated with thick styrofoam. The exteriorbottom of the container is in continual contact with...
- Q A bat strikes a 0.145-kg baseball. Just before impact, the ballis traveling horizontally to the right at 60.0m/s , and it leavesthe bat traveling to the left at an angle...
- Q A proton is fired from far away toward the nucleus of a mercuryatom. Mercury is element number 80, and the diameter of the nucleusis 14.0 fm.If the proton is fired...
- Q A bicycle racer sprints at the end of a race to clinch avictory. The racer has an initial velocity of 13.0 m/s andaccelerates at the rate of 0.450 m/s^2 for...
- Q A spacecraft starts from rest, and makes a journey to adestination 134000 km from its starting point. It does so byaccelerating at a constant rate of 8.91 m/s^2 up to...
- Q An electron is at the origin. (a) Calculate the electricpotential VAat point A, x= 0.250 cm. (b) Calculate theelectric potential VBat point B, x= 0.750 cm. What isthe potential difference...
- Q A sphere of radius 2.09 cm and a spherical shell of radius 6.97cm are rolling without slipping along the same floor. The twoobjects have the same mass. If they are...
- Q A person pushes a 10.5-kg shopping cart at a constant velocityfor a distance of 37.6 m on a flat horizontal surface. She pushesin a direction 20.2 ° below the horizontal....
- Q When jumping straight down, you can be seriously injured if youland stiff-legged. One way to avoid injury is to bend your kneesupon landing to reduce the force of the impact....
- Q Is there a material which can allow light (or any other EMradiation) to pass through from one side as if it is transparentbut its other side reflects light like a...
- Q Enter numerical answers with THREE SIGNIFICANTFIGURES.A soap bubble of uniform thickness has an index of refraction of1.53, and is illuminated by light with a wavelength of 580.nm.a) Calculate the wavelength...
- Q Question 10The statements in the following list all refer to QuantumPhysics. Check the boxes of the THREE CORRECT statements.1. In the photoelectric effect, the maximum energy of theemitted electrons depends...
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