Physics

Which of the following is true of the deepwater layer of the ocean?A. warmest and least dense of the ocean layersB. experiences a rapid decrease in temperatureC. is warm in the summer and cold in the winterD. cold all year round
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Which are properties of a liquid? Check all that apply.
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Lightning produces a maximum air temperature on the order of 104K, whereas a nuclear explosion produces a temperature on the order of 107K. Find the order of magnitude of the wavelength radiated with greatest intensity by each of these sources. Name the part of the EM spectrum where you would expect to radiate most strongly.
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Two resistors are connected in parallel. If R1 and R2 represent the resistance in Ohms () of each resistor, then the total resistance R is given by 1R=1R1+1R2. Suppose that in fact, these two resistors are actually potentiometers (resistors with variable resistance) and R1 is increasing at a rate of 0.4/min and R2 is increasing at a rate of 0.6/min. At what rate is R changing when R1=117 and R2=112?
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A uniform electric field is present in the region between infinite parallel plane plates A and B and a uniform electric field is present in the region between infinite parallel plane plates B and C. When the plates are vertical, is directed to the right and to the left. The signs of the charges on plates A, B and C may be:_______.A. -- ,--, --B. + , -- , --C. + , --, +
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Which of the following statements is true about absolute zero?It is the point at which electrons separate from the nucleus of atoms.It is the point at which electrons separate from the nucleus of atoms.It is theoretically the point at which all particle motion stops.It is theoretically the point at which all particle motion stops.It occurs at 273 degrees Kelvin.It occurs at 273 degrees Kelvin.It is the point at which protons separate from neutrons in the nucleus
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What is the power generated by a motor boat that applies a 1500 N force over 1000 m in 60 seconds?
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PLZZZ HELP ME ASAP!!!
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Which equation could not be used to determine straight line acceration?
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Based on the graph, describe how momentum changes with time for an object in free fall. If you can help, I would be so grateful.
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A proton (with charge of 1.6 x 10^-19 C and mass of 1.7*10^-27 kg) traveling at a speed of 57,600,630 m/s in the + x-direction enters a region of space where there is a magnetic field of strength 0.5 T in the - z-direction. What would be the radius of the circular motion that the proton would go into if it is "trapped" in this magnetic field region?
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An amusement park ride swings back and forth once every 60.0 s. What is the ride's frequency? The Answer choices are in the image above
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basic component of matter, it is composed of a nucleus which is the central part, the protons and electorns
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Vector A is 3 units length and points along the positive x-axis vector B is 4 units in length and points along negative y-axis .find magnitude and direction of the vector (a) A+B (b)A-B
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A team of scientists wants to conduct a study on an endangered animal inthe wild. Which rule should the study follow in order to be considered ethical?A. The scientists will promote the study on their personal websites.B. The animals will not be harmed during the study.C. The study will gather data over a long period of time.D. The study will answer a question that has never been investigated.
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a student starts his lawnmower by applying a constant tangential force of 150 N to the 0.3 kg disk-shaped flywheel. the radius of the flywheel is 18 cm. what is the flywheels angular acceleration? b. what is the angular speed of the wheel after it has turned through one revolution,( neglect friction and motor compression.) c. what is the tangent speed of a point on the rim of the flywheel?
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Mixing chemicals in a cold pack creates a reaction that:absorbs heatdestroys heatreleases coldnone of the above
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You are sharing a house with a few roommates. One of them plays on the basketball team, and is exactly 200 cm tall. The heights of you and the other roommates are 188 cm, 175 cm, and 160 cm. You want to buy the minimum height mirror that will allow all of you to see your entire selves, when the mirror is mounted in a fixed position on the wall. Assume each person's eyes are at a level 95% of their height. How tall a mirror should you buy
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Placing resistors in parallel ____the equivalent resistance of a circuit.A. decreasesB. cancelsC. increasesD. localizes
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A rifle fires a pellet straight upward, because the pellet rests on a compressed spring that is released when the trigger is pulled. The spring has a negligible mass and is compressed by from its unstrained length. The pellet rises to a maximum height of 6.10 m above its position on the compressed spring. Ignoring air resistance, determine the spring constant.
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A physicist at a respected research laboratory reports a startling newdiscovery. Her conclusions are based on data from many trials. However,other scientists are unable to reproduce the results of the experimentWhich statement tells why the original experiment might be faulty?A. The conclusion are based on multiple trialsB. The results are announced to the publicC. Experimental results cannot be producedD. The experiment does not include sophisticated equipment
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Consider a pulley of mass mp and radius R that has a moment of inertia 1/2mpR2. The pulley is free to rotate about a frictionless pivot at its center. A massless string is wound around the pulley and the other end of the rope is attached to a block of mass m that is initially held at rest on frictionless inclined plane that is inclined at an angle with respect to the horizontal. The downward acceleration of gravity is g. The block is released from rest .How long does it take the block to move a distance d down the inclined plane? Write your answer using some or all of the following: R, m, g, d, mp,
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PLEASE ANSWER THIS ASAP I WILL MARK YOU THE BRAINLIEST The actual subject is Science but they dont have that as a option in pick a subject
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A standard 1kilogram weight is a cylinder 50.5mm in height and 52.0mm in diameter. What is the density of the meterial?(kg/m^3)
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