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As light from a star spreads out and weakens, do gaps form between the photons?
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two objects with the same mass will always have the same momentum true or false
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Give reasons for the following:a. Knives and swords are supposed to have extremely thin blades.b. Lorries and trucks carrying heavy loads have 8 tires instead of four, and thetires are broader.c. Camels can walk easily in desserts but humans cannot.d. In a flight, the human ear pain during take-off and landing.e. A suction cup does not stick on a rough surface.
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An electron in a mercury atom jumps from level a to level g by absorbing a singlephoton. Determine the energy of the photon in joules.
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What is the kinetic energy of a 633.0-kg car moving at a speed of 11.2 m/s?
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Name 3 things that can be taken to reduce erosion and keep our topsoil healthy?
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the work done by a force acting through a distance.
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What is the correct definition of pH?how basic a solution isthe concentration of potassium ions in solutionhow acidic a solution isthe concentration of hydrogen ions in solution
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PLEASE HELP !!On Earth we can easily see Mercury, Venus, and Mars in the night sky. The planets look like they are moving through the stars because theA)Earth is orbiting the Sun.B)sky is swirling overhead on Earth.C)all objects in space orbit around the Earth.D)planets are moving in their own orbit around the Sun.
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Which type of reaction happens when a base is mixed with an acid?A.metal-base reactionB.neutralization reactionC.metal-acid reactionD.spontaneous reaction
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Which term is defined as long chains of carbon molecules?atomspolymersbondsmonomers
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Which structure reduces friction between joints?
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Question 2A wave with a frequency of 10 Hz and a wavelength of 4 m would have what speed?m/s
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Sonar question: A person's yells into a deep well, sending a sound wave that travels at a speed of 50 m/s. The echo is heard in 6 seconds.How deep is the well? Remember, speed distance/time
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what is the difference between transverse wave and longitudinal wave?
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Which labels best complete the diagram?Look at the diagram showing resistance and flow ofelectrons.OX: High resistanceY: Low resistanceZ: Flow of electronsXNX: Low resistanceY: Flow of electronsZ: High resistance0 X: Flow of electronsY: High potential energyZ: Low potential energyX: Low potential energyY: High potential energyZ: Flow of electrons
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How the like and unlike poles of magnets interact
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HI! I NEED HELP ASAP!!Why are electromagnets used in metal scrap yards?A.They are temporary magnets, so they can be turned on and off.B. They are very powerful permanent magnets.C. They are weak permanent magnets.D. They are temporary magnets, so eventually the metal just falls off.
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During an experiment of momentum, trolley, X, of mass (2.34 0.01) kg is moving away from another trolley, Y, of mass (2.561 0.001) kg with a speed of (3.2 0.01) ms-1. The second trolley is moving away with a distance of (2.5 0.01) ms-1. What is the absolute uncertainty of the ratio of momentum of the two trolleys X/Y?
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Q2: The RMS potential difference of an AC household outlet is 117 v.a) What is the maximum potential difference across a lamp connected to the outlet?b) If the RMS current through the lamp is 5.5 A, what is the lamp's maximum current?
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eachA boy of mass 10kgclimbs up to Stepsof height0.2m in 20 seconds calculate thePower of the body.
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you may slip if you step on a banana peel similarly you may find difficulty to walk on a slippery or a wet floor
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which shows the formula for converting from degrees Celsius to degrees Fahrenheit?F=95*C) +32F=59* (C-32)F='C-273
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Three resistors, of 100, 200, and 300 ohms are connected in parallel. What is their equivalent resistance? (Unit = ohms)
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