Master Physics with Fun Quizzes & Brain Teasers!

A motorist travels 130 km in 2 hours.
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The gravitational force between two asteroids is 6. 2 108 N. Asteroid Y has three times the mass of asteroid Z. If the distance between the asteroids is 2100 kilometers, what is the mass of asteroid Y? 3. 7 1015 kg 1. 1 1016 kg 1. 4 1031 kg 4. 1 1031 kg.
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The process of converting a continuous signal to a series of 1s and 0s introduces small errors to the sound as it is recorded. What is this process called? a binary error a sampling error a qualifying error a quantization error.
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A reservoir maintains the water surface at an elevation of 380 feet. An 8-inch diameter pipe connects to the reservoir at an elevation of 270 ft and runs at a slope to an exit nozzle at an elevation of 210 ft. The nozzle is 4 inches in diameter. If the head lost through the pipe and nozzle is 36 feet , calculate the flow rate.
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If the activity of a radioactive substance drops to 1/32 initial of its initial value in 45 years, calculate the half life period of the substance.a.) 3 yearsb.) 6 yearsc.) 2 yearsd.) 9 years
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what causes the apparent motions of stars across the sky each nightA. earth revolves around the sun.B. earth spins on its axisC. the stars move around the sun and earth.B. the sun and earth revolve around the stars
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Imagine a piece of cake. Is it a solid, liquid, or gas, or is it in more than one state?Explain your decision.
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what is kinematics?explain ~
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Use the provided data table, to explain why Manhattanhenge occurs just twice a year and why each of these days are about the same length of time away (about 22 days) from the summer solstice (which is on June 21st, the longest day of the year in the Northern Hemisphere).
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Is it true that an object moves in a a circle at a constant speed will also have a constant velocity ?
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How high up is a 3.00 kg object that has 300.j of energy
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Checkpoint 4 1. Refer to Figure 1.25. Cart B, of mass 350 g, moves on the frictionless linear air track at 2 m. s-' to the left. Cart B strikes cart A, of mass 200 g, travelling in the opposite direction at 1,2 m. st. After the collision, cart B continues in its original direction at 0,7 m. s', a)Why is this considered an isolated system of colliding bodies? b) Calculate the velocity of cart A after the collision. c) How does the change in momentum of each cart compare? Check your answer using calculations. Cart B Cart A 2 m. s1 1.2 m. s 1 S" 200 g 350 g
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I2. Conduct a search of scientific and/or technical literature related to the two examples youfound. Identify each source you chose and determine the credibility and reliability of eachsource before deciding whether its claim is valid or false. For each source, consider thefollowing questions. Then choose one of your sources as a sample, and provide your teacherwith answers to the questions for that sample source. (5 points)A) What is the purpose of the source? Is the article current? (The main purpose of the sourcecould be documenting scientific research, reporting news, providing entertainment, or marketingproducts. A current article is one that was published in the recent past.)Help
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Astronomers arrange the stars into groups called spectral classes (or types) according to the kinds of lines they find in their spectra. These spectral classes are arranged in order of:
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Why is there more pressure the deeper you go in water?
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The hottest recorded temperature in the history of the United States is 134 F, which is 57 C. What would the speed of sound at this temperature?
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A balance uses small metal weights of known mass to determine the mass of a substance. Where would a balance NOT function correctly?.
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any help would be appreciated
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Which of the following best describes a property of water?A. Having a narrow temperature range for a liquid stateB. Requiring a low amount of heat to change temperatureC. Having high surface tensionD. Being unable to dissolve many substances
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What are some model limitations?
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What are the medical applications of the simple pendulum experiment?
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45. When you park on a level road next to a curb: A. Your wheels must be within 18 inches of the curb B. Your front wheels must be turned towards the side of the road C. You do not have to set your parking brake
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A resin tube and a PVC rod are both rubbed against styrofoam. Dothe resin and PVC attract or repel after? Why?
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What is the primary mode of energy transfer from hot coffee inside a Thermos bottle to the environment
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