Physics

Is jump rope a sport.
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Doubling the amplitude of a sound wave will ?A) Double the speed of the sound and cause it to have a higher pitch B) Havel the speed of sound and cause it to have a lower pitchC) Leave the speed of sound unchanged, but cause the sound to be louder D) Leave the speed of sound unchanged and cause the sound to have a lower pitch
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A horizontal line on a phase-change graph indicates
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Se dispone de dos vasos con agua a 20 grados y queremos calentarlo hasta alcanzar 50 grados. Si el primero contiene 0,5l y el segundo, 750ml, cual de los dos requerir mas cantidad para alcanzar la temperatura deseada? Porque?
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What is the velocity of a wave that has a frequency of 400 Hz and a wavelength of 0.5 meters?
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In later years, motors improved and could be run directly from a 60 Hz power supply. As a result, 25 Hz power systems shrank and disappeared. However, there were many perfectly-good working 25 Hz motors in factories around the country that owners were not ready to discard. To keep them running, some users created their own 25 Hz power in the plant using motor-generator sets. A motor generator set consists of two machines connected on a common shaft, one acting as a motor and the other acting as a generator. If the two machines have different numbers of poles but exactly the same shaft speed, then the electrical frequency of the two machines will be different due to Equation (3-34). What combination of poles on the two machines could convert 60 Hz power to 25 Hz power?
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How were lion fish introduced to the areas around Florida
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A cube, 1 m on each edge, is held 0.75 m below the surface of a pool of water by a rope. The mass of the cube is 700 kg, and the weight distribution is such that one face remains parallel to the surface of the water. a. Find the tension in the rope. b. Assuming the rope is cut, how far will the cube protrude from the water
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what is polarization
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Explain your thinking. What definition, rule, or reasoning did you use to decidewhether something is a solid?
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What are the pros and cons of hydro electricity
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Word ProNems:1. A car goes from 4.47 m/s to 17.9 m/s in 3 seconds.a. Did this car speed up or slow down?b. Should your answer be positive or negative? Explain your reasoning.c. Calculate the acceleration of the car.
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ASAP PLEASE!!When tectonic plates are strained to the point that they can no longer bend, which of the following is most likely to occur?A. EarthquakeB. Volcanic EruptionC. Convection CurrentD. Ocean Basin Formation
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A tennis player serves a tennis ball such that it is moving horizontally when it leaves the racquet. When the ball travels a horizontal distance of 13 m, it has dropped 56 cm from its original height when it left the racquet. What was the initial speed, in m/s, of the tennis ball
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Somebody can tell me what answers it is?
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I need help plz help me out 10 points!!!!!!!
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What are the four theories of the origin of the moon?
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how do braces protect you while doing sports
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A flowerpot that has a mass of 1.5 kg is sitting on a windowsill 30 meters from the ground. Is the energy of the flowerpot potential of kinetic?How much energy does the flowerpot have?
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In the figure calculates the acceleration of the block friction not today
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scientific notation for 836
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(10 points) A spring with a 7-kg mass and a damping constant 12 can be held stretched 1 meters beyond its natural length by a force of 4 newtons. Suppose the spring is stretched 2 meters beyond its natural length and then released with zero velocity. In the notation of the text, what is the value c24mk? m2kg2/sec2 Find the position of the mass, in meters, after t seconds. Your answer should be a function of the variable t of the form c1et+c2et where = (the larger of the two) =
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A 0.025-kg block on a horizontal frictionless surface is attached to an ideal massless spring whose spring constant is The block is pulled from its equilibrium position at x = 0.00 m to a displacement x = +0.080 m and is released from rest. The block then executes simple harmonic motion along the horizontal x-axis. When the displacement is what is the kinetic energy of the block?
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discharge occurs when oppositely charged objects get close enough for the air between them to become electrically charged.
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