Physics

how fast (in rpm) must a centrifuge rotate if a particle 8.50 cm from the axis of rotation is to experience an acceleration of 115000 g's? if the answer has 4 digits or more, enter it without commas, e.g. 13500.
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A 500-kg motorcycle, going at 20 m/s, crashes into a stationary 1000-kg car. Assuming a perfectly inelastic collision, what will be the velocity of thewreckage?
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8. From the picture in question 4, if the ball has a mass of 4 kg and is rolling at 4.4 m/s at thebottom of the hill, how tall is the hill?PEg=m.g.hPE=98Jg= 4.4m/sm=4kgh=?
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solar energy is also known as . group of answer choices convection longwave energy power conduction insolation
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the gigapan image has a highlighted square drawing attention to the bottom of a fault that slants downwards to the right. there are two dolls, one on each side of the fault. the doll on the left is raised up while the doll on the right is at ground level. assume the dolls are each 4 centimeters tall. measure the extent of displacement by using the height of one of the dolls as your scale. how much displacement (in meters) has occurred?
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Owen hits a baseball with a velocity of 55 m/s. The ballpark fence is 120 m away.Does the ball reach the fence if it leaves the bat traveling upward at an angle of 30to the horizontal?
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Can energy from the Sun directly reach the entire daytime side of the Earth during a solar eclipse? Explain how you know.
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the attractive forces that exist between gas particles cause the measured pressure of a gas to be lower than that predicted by the ideal gas law true or false
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etoposide, sold under the trade name of etopophos, is used for the treatment of lung cancer, testicular cancer and lymphomas. select all the o atoms that are part of the acetals in etoposide.
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A firefighting crew uses a water cannon that shoots water at 29.0 m/s at a fixed angle of 53.0 above the horizontal. The firefighters want to direct the water at a blaze that is 10.0 m above ground level. How far from the building should they position their cannon? There are two possibilities ( d1 ); can you get them both? (Hint: Start with a sketch showing the trajectory of the water.)Express your answer in meters.d1 and d2
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is the voltage induced when the magnet is stationary inside the coil? what happens to the induced voltage if the magnet is pushed in at a faster rate?
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Question 8 of 10Which three statements describe mechanical waves?A. The waves can travel through empty space.B. The waves need matter to transfer energy.C. The waves transfer energy by causing particles of matter tomove.D. The waves can transfer energy through solids, liquids, and gases.Please help!
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why do we use a semi-circular optical block instead of rectangular plate we used before? what is the advantage of using semi-circular block?
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suppose a 63-kg gymnast climbs a rope. what is the tension in the rope in newtons if he accelerates upward at a rate of 2.5 m/s2?
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if a train is travelings down the tracks at 45 m/s, what is the value of the resulting force in newtions
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Which has more kinetic energy:a. A compact car going 70 MPH or a tractor trailer going 15 MPH?b. An SUV going 30 MPH or a pickup truck going 30 MPH?c. A school bus going 15 MPH, an SUV going 35 MPH, or a compact car going 45 MPH?
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Why does time only move forward?
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for what wavelength of light is the scattering only 2.00% that of light with a visible wavelength of 510 nm
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1. which of the following parameters is measured by an optical encoder? a) direction b) position c)angular velocity d) all
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what is the likely reason that ammeters are connected in series, before or after a circuit component, to measure current?
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how much charge can be placed on a capacitor with air between the plates before it breaks down if the area of each plate is 8.00 cm2? nc (b) find the maximum charge if paper is used between the plates instead of air. nc
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a weight w is now placed on the same block and 4.87 n is needed to push them both at a constant velocity. what is the weight w of the box if the coefficient of friction is .60?
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Give the scientific word for these 3 wordsA magnet produced using an electric current A machine that converts kinetic energy into electrical energy in a power stationA machine that spins when high-pressure steam is blown at it
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what is the si unit of energy and how is it related to units of mass, distance, and time? multiple choice question. joule, 1 j
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