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Which of the following statements is true about scientific theories? A. Scientific theories become hypotheses. B. Scientific theories are never proven. C. Scientific theories are proposed answers to questions. D. Scientific theories summarize patterns found in nature.

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Suppose you push your physics book against a wall hard enough to keep it from moving. Does the friction force on the book point (a) into the wall, (b) out of the wall, (c) up, (d) down, or (e) is there no friction force? Explain.

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Penny has two dogs: Fluffy (left) and Butch (right). Penny thinks her dogs might enjoy a little adventure. She owns two identical small red wagons with four wheels. Fluffy picture below Butch picure below Penny puts Fluffy in one wagon and pushes the wagon, once, as hard as she can. Penny puts Butch in the other wagon and pushes it once, also as hard as she can. Both of the wagons travel across a level surface. Will the motion of the two wagons be different? A. Yes; Fluffy’s wagon will stop first. B. Yes; Butch’s wagon will move faster. C. Yes; Fluffy’s wagon will move faster. D. No; the wagons will both move in the same way.

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How old are the oldest fossils on earth? Why do we put salt on sidewalks when it snows? What is it that makes diseases caused by viruses and bacteria hard to treat?

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Suppose you push your physics book against a wall hard enough to keep it from moving. Does the friction force on the book point (a) into the wall, (b) out of the wall, (c) up, (d) down, or (e) is there no friction force? Explain.

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50 points if answered all the questions with shown work. Need urgent cause I have a final on this. Do not comment if u don’t know the answer if you do you will be reported. 1.) Our principal drops a tennis ball of the Golden Gate Bridge. If it takes the ball 3.87 seconds to hit the water, how fast is it traveling (vertically) when it does hit the water and how far did it drop? 2.) Steven tosses a 4.95 kg package with a velocity of 2.3m/s at Mary, who is sitting on frictionless surface. Mary with a mass of 38.6 kg catches and holds on the the package. What is her velocity after catching the package? 3.) Jennifer pitched a 0.23 kg baseball horizontally at +10.0m/s. Sam hits it with a bat and the ball rockets straight back at Jennifer with a speed of 20.0 m/s. A. What impulse did the bat impart on the ball? B. What is the change is the balls momentum? C. What is the change in the bats momentum? D. What impulse did the ball impart on the bat? E. If the time of impact is 0.050s, what force did the bat impart on the ball?

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It would be appreciated if all questions were answered and have shown work. 🙂 1. While skiing, Sam flies down a hill and hits a jump. He has a mass of 75 kg, and he leaves the jump at 18 m/s. What is his momentum as he leaves the jump? 2. How fast would a 0.25 kg football have to be traveling to have the same momentum as a 0.05 kg bullet travelling 500 m/s? 3. Sarah, who has a mass of 55 kg, is riding in a car at 20 m/s. She sees a cat crossing the street and slams on the brakes! Her seat-belt stops her from flying forward, bringing her to rest in 0.5 seconds. How much force did the seat-belt put on Sarah?

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For Questions, 1-10 fill in the blank with the letter of the description best matches the term. Tennis skill and Rules A. When the score is tied at 40 all B. Tennis swing on the strong side of the body C. Tennis swing on the weak side of the body D. When the service hits the net and lands in E. Refers to the score when no points have been won F. Rule for deciding a set when the score is 6-6 G. When the serve does not land in the service box H. The swing that begins all volleys I. A good serve that is not returnable J. The game point following deuce and I will share my answers

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Compare and contrast deductive reasoning and inductive reasoning. Based on the information given here, answer the following questions about the experiment:

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Which is not a physical property? A. Hardness B. Boiling Point C. Ability to conduct electricity D. Ability to combine with oxygen

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Can someone plz answer these questions

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Why are chemical properties harder to observe than physical properties?

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Alai is comparing the physical property of two materials. He is hitting each with a hammer to observe what happens. What physical property of the materials is Alai most likely observing? solubility conductivity hardness odor

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Did I do these questions correctly?

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Did I do these questions correctly?

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You are riding on a school bus and suddenly get thrown forward. What did the bus just do? A.The bus makes a hard turn to the right. B.The bus is going forward and suddenly stops. C.The bus is going backward and suddenly stops. D.The bus makes a hard turn to the left.

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Please help me the 3 questions 20 point

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6 questions: What percentage of the earth is covered by water? Did dinosaurs and humans ever exist at the same time? What is Darwin’s theory of the origin of species? Why is the sky blue? What causes a rainbow? Why does a year consist of 365 days and a day of 24 hours?

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What occurs when a part of your body is subjected to extreme or constant pressure, such as from a sharp or hard object.

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A light ray hits a hard, opaque object. the angle at which the light ray bounces off the object depends on the smoothness of the surface. the material the surface is made of. the angle at which the light hits the surface. the source of the light that hits the surface.

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Please help me answer these questions.

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Who wins a tug-of-war one who pushes harder at the ground or pulls harder at the rope

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PLEASE HELP FAST PLEASE Identify the cause of each volcano below using the words: subduction, rift, and hot spot. a) In 1973, a town in Iceland called Vestmannaeujar was surprised when lava began erupting from a vent or crack in the Earth’s surface. The Earth’s crust seemed to split apart._______________________ b) Scientists feel that the Cascade Mountains, extending from California to British Columbia, are still forming. Two plates are colliding, forcing magma up from the mantle to form the mountain. _____________________ c) Mauna Loa in Hawaii is the “growing mountain”. In 1969 and 1974, it erupted and poured out lava through a hole in the Earth. This lava called and hardened into rock. Below it, molten lava continues to flow. _____________________

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Scientists usually write reports about their investigations. Why do they do this? a. to classify results b. to ask questions c. to perform experimental trials d. to communicate their work to other scientist

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Horizontal circular motion questions: 1. if net force of an object is constant in magnitude and always directed perpendicular to its velocity, the speed of an object is a. decreasing b. increasing c. zero d. constant 2. The net force on a vehicle traveling at a constant speed on a curved path points a. in the direction of motion b. to the center of curvature c. opposite the direction of motion d. away from the center of curvature

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A mass oscillating up and down while attached to the bottom of a spring can be modeled using simple harmonic motion. If the weight is displaced from its equilibrium position a maximum of 7 centimeters and it takes 3 seconds to complete one cycle, answer the following questions: Amplitude: Period: Frequency:

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Which of newtons laws explains why your hands get red when you press them hard against a wall

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Use the picture to answer these two questions. Identify two pairs of action-reaction forces involving the rope. Is there motion? Use Newton’s third law to explain what would happen if the rope suddenly slipped out of the white dog’s mouth.

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The Indianapolis 500 is one of the most exciting events in sports. Each spring, 33 drivers compete in the 500-mile race, sometimes hitting speeds of more than 220 miles an hour. The general formula for computing distance is rate (or speed) multiplied by time, given a steady average speed. The formula may be written d = rt. Answer today’s project questions on speed, distance, and time. The driver’s average speed to complete all 8 laps is ______ miles per hour. Round to the nearest tenth of a mile per hour.

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Can someone help with these questions?? Oceans help: keep worldwide temperatures constant reduce atmospheric CO2 minimize rapid temperature fluctuations all of the above About 96% of sea water is made of: nitrogen carbon dioxide sodium and chloride hydrogen and oxygen Salinity: is expressed in parts per 1,000 refers to the amount of dissolved particles in sea water is denoted by the symbol ‰ all of the above About 330 million cubic miles of water cover the earth. True False

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