Physics

1. Rearrange the equation for the area of a rectangle (A = l w) to solve for length, l.Step 1Step 2Step 3Step 42. Rearrange the equation for velocity v = d/t to solve for time, t.Step 1Step 2Step 3Step 4
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Which applications, either for diagnostic purposes or for therapeutic purposes, do not involve ionizing radiation? Check all that apply.
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Question Set: Waves and Wave Properties
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The sensor on a door for a home security system consisted of a small coil of wireembedded in the doorframe, and a small steel disk on the door opposite the coil.When the door was opened, what characteristic of the coil changed for the homesecurity system?
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Course hero N4M.6 A board has one end wedged under a rock having a mass of 380 kg and is supported by another rock that touches the bottom side of the board at a point 85 cm from the end under the rock. The board is 4.5 m long, has a mass of about 22 kg, and projects essentially horizontally out over a river. Is it safe for an adult with a mass of 62 kg to stand at the unsupported end of the board
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calculate power disspated by the element of an electric fire (heater) of resistance 30 ohms when a current of 10 amps flows in it. if is on for 30 hours in a week determine the energy used. determine the weekly cost of energy if eletricity costs K 13 per unit
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A globe (model of the Earth) is a hollow sphere with a radius of 16 cm. By wrapping a cord around the equator of a globe and pulling on it, a person exerts a torque on the globe of 120 N m for 1.2 s. What angular momentum does the globe have after 1.2 s?
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A uniform 4.50 kg square solid wooden gate 1.50 m on each side hangs vertically from a frictionless pivot at its upper edge. A 1.20 kg raven flying horizontally at 4.50 m/s flies into this door at its center and bounces back at 1.50 m/s in the opposite direction. Part A What is the angular speed of the gate just after it is struck by the unfortunate raven
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Decribe the general shape of the graph.
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When you are sitting in a chair, your body exerts a _____on the chair and the chair exerts the ____ force back.it can either be:forcefrictionsamedifferent interacting objectsmassor push
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Which is a solution?a raisin cookiepure watercoppervinegar
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HOW ARE SOUND AND LIGHT WAVES ALIKE AND DIFFERENT? short answer please
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A baseball is thrown with a speed of 36 meters per second (m/s). What is the distance from the mound to home plate if the ball takes 0.5 seconds to leave the pitcher's hand and cross the plate? A-72 B-18 C-41 D-31 Help me out please
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why don't planets crash into each other?
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What is the Lorentz force law used for? A. To find the voltage of a battery B. To find the magnitude of a magnetic force C. To find the velocity of an electromagnetic wave. D. To find the direction of a magnetic field
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Robb wants to win the next sled race. He asks for your advice. What would you tell him he should change in order to win? Explain why your solution would work in terms of energy.
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A rock has a density of 2 g/mL and a mass of 17.5 g. What is the volume of the rock? HELP PLEASE
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Plan an experiment to measure the ideal mechanical advantage of a three-hole punch. (a) What materials would you need? (b) What procedure would you use?
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A car and a semi-truck are both traveling along a road. Based on Newton's 2nd law, what will happen if both cars apply the same type of brakes at the same time?
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which lens have plus power
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A 100 L ball is blown up inside at 200K. It is then taken outside in the hot sun, and the volume increases to 150 L. What is the new temperature?
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how to measure the weight of an object?? PLEASE HELP I'LL GIVE BRAINLEST
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