Physics

In many places on Earth, humans are responsible for the removal of grasses, shrubs, trees, and other plants with roots that hold soil in place. This activity is best described by which of the following? *A) deforestation B) urbanization C) air pollution D) rise in sea level
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Which of these statements best describes a possible environmental consequence in constructing a large-scale wind farm to generate electricity?
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Blackie, a cat whose mass is 6-kg, is napping on top of the refrigerator when he rolls over and fall. Blackie has a KE of 90-J just before he lands on his feet on the floor.How tall is the refrigerator?
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A 25 kg block is sliding down 28o incline at a constant speed.
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During a lab experiment a student took his resting pulse rate, counting 23 beats in 20 seconds. The student then exercised for several minutes. The student's pulse was taken immediately after the exercise, and then every minute for 6 minutes.
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Daphne swings a 15.0 kg bucket of water in a vertical circle of radius 1.3 m. What is the minimum speed, v, at the top of the circle that the pail has to go if the water is not to spill?
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How fast does a 500kg car need to drive to have 100,000 J of kinetic energy?
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A ball with a weight of 70 N hangs from a string that is coiled around a 3 kg pulley with a radius of 0.4 m. Both the ball and the pulley are initially at rest. The rotational inertia of the pulley is 0.5mr2 and the ball is released from rest. Calculate the ball's velocity after it falls a distance of 2 meters.
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EPlease select the word from the list that best fits the definitionfreezing point of carbon dioxideA. MeterB. LiterC. Kilogram D. Kelvin
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A 10.0 kg gun applies a force of 250. N left on a 0.0200 kg bullet. What is the force on the gun? A. 5.00N B. 25.0N C. 12,500N D. 250.N
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Solve the speed for the blank this is a PHET LAB
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During which type of radioactive decay does a nucleus gain a proton but keepthe same atomic mass number?A. Alpha decayB. Beta decay (electron)C. Gamma decayD. Beta decay (positron)SUBMIT
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Find the frequency of a 63.8-cm long open end air columnthat resonates as shown in the diagram at the right. The speed of sound in the air is 345 m/s.
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What are the "Fundamentals of Economics?
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A behavior that is developed by observing others or being taught isInherited TraitsInherited FunctionLearned behaviorCharacteristic
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The screens show two sound waves that last the same amount of time. Which wave has a higher frequency? Explain your answer
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Once a scientific theory is formed, there is no further investigation needed. True False
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10. A pitcher in a professional baseball game throws a fastball, giving the baseballa momentum of 5.83 kg. m/s. Given that the baseball has a mass of 0.145 kg,what is its speed?
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1. Why is the equivalent resistance in a parallel circuit equal to the sum of the reciprocals of the individual resistances, whereas in a series circuit, the equivalent resistance is the sum of the individual resistances?
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how do you know which magnitude is higher or how do you compare them?
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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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If the force between two charges with opposite signs is -36 newtons, what is the force between two charges with the same sign?
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A .001 kg bead slides without friction around a loop-the-loop. The bead is released from a height of 20.6 m from the bottom of the loop-the-loop which has a radius 7 m. The acceleration of gravity is 9.8 m/s [photo] What is its speed at point A ? Answer in units of m/s. Your answer must be within 5.0%
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Look at this attached photo
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