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At what distance along the z-axis is the electric field strength a maximum?

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How does variation in the measuring device (instrument) effect the measurements obtained on a component?

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If an object is in equilibrium, which of the following statements is NOT true? A) The speed of the object remains constant B)The acceleration of the object is zero C) The net force acting on the object is zero D) The object must be at rest E) The velocity is constant

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In the calorimetry experiment which energy will be calculated during the heat exchange if water is used?

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A boat travel in a straight line at a velocity of 23 m/so and has a mass of 1000 know what is the boats momentum

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Which of the following best explains velocity? A. The speed of an object in motion B. The speed and direction of an object in motion C. The direction of an object in motion D. Only the change of direction of an object in motion

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Which best explains what will happen if Sharilyn unscrews a bolt with a short handled wrench? The bolt will be easier to unscrew because it is closer to the fulcrum and the mechanical advantage will be reduced. The bolt will be harder to unscrew because it is farther from the fulcrum and the mechanical advantage will be greater. The bolt will be easier to unscrew because it is farther from the fulcrum and the mechanical advantage will be greater. The bolt will be harder to unscrew because it is closer to the fulcrum and the mechanical advantage will be reduced.

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How does alternating current prevent power loss over each cycle with the current moving back and forth?

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You are vacationing in Iceland and exploring one of its famous volcanoes, Eyjafjallajokul, which erupted in April 2010. While sightseeing, you find some rocks near the base of the volcano. What type of rock would these most likely be? Igneous Metamorphic Sedimentary Lavaneous

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. How do you think altering factors like wavelength and frequency affect they way we see and hear? How does this help us understand how things like lenses

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The Celsius tempersture scale is based on which of the following? a) vapor b) the human body c) the boiling point of air d) the boiling and freezing points of water

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In which situation can you be at rest and moving at the same time? When playing soccer, you are at rest relative to the ball and moving relative to the field. When swimming, you are at rest relative to the water and moving relative to the sides of the pool. When riding a bike, you are at rest relative to the bicycle and moving relative to the road

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20 POINTS!!!! PLS HELP!!!! Mechanical waves require a medium to transfer energy. Which of the following is a mechanical wave? A) surface waves B) microwaves C) light waves D) radio waves

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The atomic symbol mc026-1.jpg represents lead-206 (Pb-206), an isotope that has 82 protons and 124 neutrons. Which atomic symbol could represent an isotope that undergoes radioactive decay to produce Pb-206?

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Wavelength of a sound wave decreases so that it has a higher frequency. Which characteristics would you also expect to change? A) color B) volume C) pitch

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Why does salt dissolve in water use the words mixture and solution and dissolve

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How much would a 1kwh cost if 631kwh costs £70?show working please!!!

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What force must be applied to each end of the rod to prevent it from contracting when it is cooled from 120 ∘c to 10 ∘c?

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Water is poured into a container that has a leak.The mass ‘m’ of the water is given as a function of time ‘t’ by, m=5t^0.8 -3t + 20 , with t>=0, mass in grams and t in seconds a. at what time is the water mass greatest,and b. what is the greatest mass? In kilogram per minute what is the rate of mass change at t=3 s, and t=5 s.

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In uniform circular motion, which of the following quantities are constant: speed, instantaneous velocity, tangential velocity, radial acceleration, tangential acceleration? Which of these quantities are zero throughout the motion?

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A ball rolls down an incline with an acceleration of 10 cm/s^2. If it starts with an initial velocity of 0 cm/s and has a velocy of 50 cm/s when it reaches the bottom of the ramp, how long is the ramp?

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If you wished to warm 100 kg of water by 15 degrees celsius for your bath, how much heat would be required? (give your answer in calories and joules)

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A plane accelerates from rest at a constant rate of 5.00 m/s2 along a runway that is 1800 m long. Assume that the plane reaches the required takeoff velocity at the end of the runway. What is the time tTO needed to take off?

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Which term refers to the time interval between the passage of successive wave crests? a. wave height b. wave period c. wave speed d. wavelength

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As 390-g of hot milk cools in a mug, it transfers 30,000 J of heat to the environment. How does the temperature of the milk change? (cmilk = 3.9 J/g°C) a) It increases by 77°C. b) It decreases by 77°C. c) It increases by 20°C. d) It decreases by 20°C.

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The distance between exoplanets and planet earth is measured in ________. miles meters lightyears kilometers

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_____ occurs when water molecules at the surface of a pool have enough kinetic energy that the attractive forces holding them to the liquid can be overcome. a. boiling b. sublimation c. evaporation d. condensation

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A kite is inscribed in a square with a side length of 9 units.What is the area of the kite?27.5 square units36.0 square units40.5 square units45.0 square units

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A square block of steel with volume 10 cm3 and mass of 75 g is cut precisely in half. The density of the two smaller pieces is now… a. the same as the original density. b. one-half the original density. c. two times the original density. d. one-fourth the original density.

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In the atmosphere water vapor condenses to form clouds. Please select the best answer from the choices provided T F

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