Physics question and answers for October 08, 2023
- Q In a physics lab experiment, a compressed spring launches a 30gmetal ball at a 25 ∘ angle. Compressing the spring 19 cm causesthe ball to hit the floor 1.7 m...
- Q INTERPRETING THE REAL LIFE STORY: Ben’s ExperienceMy whole life I have definitely been a type A person. I havealways been goal-oriented and very driven to succeed. I don’t thinkthat is...
- Q A small object with mass mm = 0.0900 kg moves along the +x-axis.The only force on the object is a conservative force that has thepotential-energy function U(x)=−αx2+βx3 where α =...
- Q A solid cylinder of radius 10 cm and mass 12 kg starts from restand rolls without slipping a distance L = 6.0 m down a roof that isinclined at angle...
- Q 4. Two people with the same height are doing drop landings(where you step off of a box onto the floor) off a box that is 40cm high. The first person...
- Q A cue ball traveling at 3.81 m/s makes a glancing, elasticcollision with a target ball of equal mass that is initially atrest. The cue ball is deflected so that it...
- Q Find the fractional energy loss for a 20-keV X-ray scatteredfrom an electron at angle 180ï‚° and compare with 2E/E0. (b) Find thefinal energy for a 10-MeV gamma ray scattered from...
- Q A spherical source radiates sound uniformly in all directions.At a distance of 13 m, the sound intensity level is 98 dB. Whatpower is radiated by this source?Answer 3 significant figures...
- Q 3/ Imagine a wire sticking out of center of a clock. If there iscurrent in the wire that is traveling out of the face of the clock,towards you, what is...
- Q An Escort and a Camaro traveling at right angles collide andstick together. The Escort has a mass of 1200 kg and a speed of 20km/h in the positive x direction...
- Q When resistors 1 and 2 are connected in series, the equivalentresistance is 22.2 Ω. When they are connected in parallel, theequivalent resistance is 4.39 Ω. What are (a) the smallerresistance...
- Q The skiing duo of Brian (77 kg ) and Ashley (54 kg ) is always acrowd pleaser. In one routine, Brian, wearing wood skis, starts atthe top of a 230-mm-long,...
- Q (section 11-6; 11-7 in3rd edition) A windmill with moment of inertia I is notrotating until a passing eagle grabs on to the top of it with hertalons as she flies...
- Q An ambulance drives towards you as you are walking down thestreet. As it drives towards you, you hear the sound of its sirenat a frequency of 3255 Hz. After it...
- Q Instructions:Write the equations that will be used for each problem andinclude every algebraic process.A spring oscillates with the angular frequency of 2 radians /seconds. There is a mass of 0.500...
- Q A thin, uniform disk with mass M and radius R is pivoted about afixed point a distance x from the center of mass. The disk rotatesaround the fixed point, with...
- Q Two astronauts, Hans and Dexter, are on a spacewalk, floating atrest next to their space vehicle. They argue and Hans shoots Dexterwith a handgun. The bullet has a mass of...
- Q twocrates, of mass 65 kg and 125 kg are in contact and at rest on ahorizontal surface. A 650 N force is exerted on 65 kg crate if thecoefficient of...
- Q A hypodermic needle is 4.0 cm long and has an inner diameter of0.25 mm. Assume the syringe contents have the same properties aswater and is at 20 ï‚°C. a. What...
- Q After the Chernobyl nuclear accident, the Pripyat River inUkraine received 5.0 ×1011 Bq yr?1 of90Sr from around the Chernobyl nuclear plant throughrunoff water and groundwater seepage, totaling 1.0 × 107m3...
- Q A wheel turns with a constant angular acceleration of 0.700rad/s2rad/s2. I JUST NEED PART B , THANK YOU.part a :How much time does it take to reach an angular velocity...
- Q Howwas Rotational Dynamics concept “discovered� What is thebackground/history of Rotaional Dynamics?
- Q Determine if the following forces are conservativea.) ? = ? 2??̂+ ? 2??̂+ ????̂b) ? = ??????̂+ ?????̂+ ???̂c) ? = ??̂+ ??̂+ ??̂d) ? = (3? 2?? − 3?)?̂+...
- Q A circular coil of wire with radius 4 cm and 20 turns is placed ina uniform magnetic field of magnitude 0.3 T. The magnetic field isparallel to the area vector;...
- Q A puck with a mass m1 = 28.0 g moving at 1.00 m/s approaches astationary puck with a mass m2 = 102 g on an air table and theyundergo a...
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