Master Physics with Fun Quizzes & Brain Teasers!

I need help on this one question in scienceThis image of a tiny fraction of the night sky was taken through a powerful telescope. Many of the objects seen in the image are galaxies similar to the Milky Way. Telescopes have taken many images like this one, but of different fractions of the night sky. What do these images suggest? A. Each galaxy contains an equal number of stars. B. The Milky Way is the largest galaxy in the Universe. C. There are no other galaxies in the Universe. D. There are many other galaxies in the Universe
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Explain why knowing a combination of grappling and striking martial arts is advantageous during a street self defense scenario. Explain how both are beneficial
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A bolt of lightning discharges 9. 7 C in 8. 9 x 10^-5 s. What is the average current during the discharge?
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Andrew was running late for class and could only find a parking space next to the golf course. His new truck was hit by a 0. 300 kg golf ball which left a 0. 400 cm dent in the hood. The golf ball was falling with a velocity of 8. 00 m/s. a) What is the initial momentum of the golf ball? b) what average force did the hood of the truck exert on the ball to stop it? c) how long did it take for the hood to stop the ball?
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The stress on a wire that support a load depend on?
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If you double the kinetic energy of a nonrelativistic particle, how does its de Broglie wavelength change? The wavelength Choose your answer here by a factor of Type your answer here [factor answer should be given to one decimal place (ex. 1. 5)]
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Coherent light of frequency 6. 32 x 1014 Hz passes through two thin slits and falls on a screen 85. 0 cm away. You observe that the third bright fringe occurs at 3. 11 cm on either side of the central bright fringe. (a) How far apart are the two slits? (b) At what distance from the central bright fringe will the third dark fringe occur?
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Deployment Worksheet 2b - Work 1. A 1400 N force is applied parallel to a horizontal surface. It pushes an 80 kg box 2 m across the surface. What work is done
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Objects labeled A, B, and C all have the same distance from each other. The gravitational attraction between objects A and B is less than the attraction between objects B and C. The attraction between objects A and C is less than the attraction between the other two sets of objects. What is the relationship between the masses of objects A, B, and C? Choose the correct answer. The mass of object A equals the mass of object C. The mass of object A equals the mass of object C. The mass of object A equals the mass of object B. The mass of object A equals the mass of object B. The mass of A is less than C, which is less than B. The mass of A is less than C, which is less than B. The mass of C is greater than B, which is greater than A
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Students performed a stair-climbing experiment to investigate the power output of the human body. Each student claimed a set of stairs while other student used a stopwatch to time the climb. The body mass, time, and vertical height reached by four students is given in the table. (Estimate g as 10m/s^2) which student generated the GREATEST amount of power in the experiment?
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A 76 kg surfer travels through the barrel of a wave at 11 m/s. What is hiskinetic energy (KE) in Joules?
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Under what conditions (plural) could you expect to conductors to actually conduct? When will they stop conducting
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A plane monochromatic electromagnetic wave with wavelength =2. 0cm, propagates through a vacuum. Its magnetic field is described by >B =(Bxi^+Byj^)cos(kz+t), where Bx=1. 9106T,By=4. 7106T, and i^ and j^ are the unit vectors in the +x and +y directions, respectively. What is Sz, the z-component of the Poynting vector at (x=0,y=0,z=0) at t=0?
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The molar specific heat of a diatomic gas is measured at constant volume and found to be 29. 1 J/mol K. The types of energy that are contributing to the molar specific heat are(a) translation only(b) translation and rotation only(c) translation and vibration only(d) translation, rotation, and vibration
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Name:.Date:Homework: Writing an Argument AboutAustralia's Skin Cancer RateG4You now have enough evidence to explain why Australia's skin cancer rate is so high. Review yourargument from Chapter 2 and think about how you will convince the AHA that both Claim 2 andClaim 3 are accurate. You will use your completed Reasoning Tool from Activity 3 to revise and add toyour argument.Question: Why is the skin cancer rate in Australia so high?
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A new planet called "Corus" was discovered by a team of astronomers thatis 60 x 106 km away from Earth. A satellite was launched by a rocket fromEarth to reach Corus. At a specific distance from Corus, the rocket releasesthe satellite to the orbit of the planet. The satellite makes one completerevolution around Corus in 15 Earth days. If Corus has a similar mass toMars, propose a suitable mass of the satellite and estimate:i. ii. Distance between the satellite and the Corus's surfaceSatellite's gravitational acceleration towards the core of CorusGravitational force between the satellite and the CorusMinimum speed of the satellite to orbit Corusiv.
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When energy leaves the suns core, it travels through the radiative zone in the form of ___.a. liquidsb. coronas c. electromagnetic wavesd. convection currents
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You serve a volleyball with a mass of 2100 g. the ball leaves your hand with a velocity of 30 m/s. the ball has kineticenergy.
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QUESTION 1A uniform solid cylindrical disk of mass M = 1. 4 kg and radius R = 0. 085 m, rolls without slipping across a horizontal surface at velocity v = 15m/s. What is the total kinetic energy, Ktotal, of the rolling disk? (Idisk = 12 MR2)O a. 236. 3JO b. 350. 3 JO c. 144. 5 JO d. 970. 1
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A 0.500-kg glider, attached to the end of an ideal spring with force constant k = 450n/m, undergoes shm with an amplitude of 0.040 m. compute (a) the maximum speedof the glider; (b) the speed of the glider when it is at x = -0.015 m; (c) the magnitude ofthe maximum acceleration of the glider; (d) the acceleration of the glider at x = -0.015m; (e) the total mechanical energy of the glider at any point in its motion
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A 2.0 kg brick has the dimensions 7.5 cm x 15 cm x 30cm. find the pressures exerted by the brick on a table when it is resting on its various faces.
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5. A certain dog whistle has a frequency of 35. 1 kHz. A person blows the whistle while riding in the back of a "convertible" airplane with a velocity of 126 m/s, north. With what minimum velocity must a person in a second airplane fly in order for the sound to be shifted into the audible frequency range? (speed of sound in air is 343 m/s)
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When investigating a crime scene, an investigator finds bullet holes in the wall out the window,across the street (about 100m away). These bullet holes are approximately 1. 1m off theground. The bullets from this particular weapon travel at a rate of 350m/s. Assuming theweapon was fired horizontally, at what height was the weapon fired? This insight will be used tonarrow the search for a suspect.
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A defensive driving solution for a mature driver with diminishedvision is toDRIVERS ED PLEASE ANSWER Select your answer, then click ortap Submit. Avoid driving at nightDrive 5 miles per hour under thespeed limitTake frequent rest breaksAsk other passengers to watchthe traffic
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