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An object that is accelerating may be A. slowing down. B. gaining speed. C. changing direction. D. all of the above
Weegy: D. all of the above User: A train approaching a crossing changes speed from 25 m/s to 10 m/s in 240 s. How can the train’s acceleration be described? A. The train’s acceleration is positive. B. The train is not accelerating. C. The train will come to rest in 6 minutes. D. The train’s acceleration is negative. Weegy: D. The train?s acceleration is negative . User: What is instantaneous acceleration? A. how fast a speed is changing at a specific instant B. how fast a velocity is changing at a specific instant C. how fast a direction is changing at a specific instant D. all of the above Weegy: D. all of the above. Is the rate of a tangent to the slope of a graph signifying velocity versus time. It is a snapshot of acceleration at a precise moment in time based on the relative changes in velocity over time. [ It is the limit of acceleration for any given point within the displacement vector. ] User: Suppose you increase your walking speed from 1 m/s to 3 m/s in a period of 1 s. What is your acceleration? A. 2 m/s2 B. 5 m/s2 C. 4 m/s2 D. 3 m/s2 User: The slope of a speed-time graph indicates A. direction. B. acceleration. C. velocity. D. speed. Weegy: B. acceleration User: Which of the following statements is true? A. An object that is accelerating is always changing direction. B. An object has an instantaneous acceleration, even if the acceleration vector is zero. C. An object at rest has an instantaneous acceleration of zero. D. Instantaneous acceleration is always changing. Weegy: C. An object at rest has an instantaneous acceleration of zero. User: A passenger in the rear seat of a car moving at a steady speed is at rest relative to A. the side of the road. B. a pedestrian on the corner ahead. C. the front seat of the car. D. the wheels of the car. Weegy: The answer is C. the front seat of the car so the sentence would be: A passenger in the rear seat of a car moving at a steady speed is at ... (More)
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As an astronaut travels far away from Earth, her weight A. decreases because gravity decreases. B. decreases because her mass decreases. C. increases because gravity increases. D. remains the same because her mass remains the same.
Weegy: 1. decreases because gravity decreases. User: The product of an object’s mass and velocity is its A. centripetal force. B. momentum. C. net force. D. weight. Reset Selection Mark for Review What's This? Weegy: The product of an object's mass and velocity is its momentum. (More)
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As an astronaut travels far away from Earth, her weight A. decreases because gravity decreases. B. decreases because her mass decreases. C. increases because gravity increases. D. remains the same because her mass remains the same. Reset Selection Mark for Review What's This?
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Infrared rays have a shorter wavelength than A. ultraviolet rays. B. X-rays. C. radar waves. D. gamma rays. Reset Selection Mark for Review What's This?
Question
Updated 5 days ago|9/18/2014 5:50:01 PM
Infrared rays have a shorter wavelength than RADAR WAVES.

Added 5 days ago|9/18/2014 5:50:01 PM
give an example of how infrared lights are used User: give an example of how micro waves are used
Weegy: micro-environment refers to: 1.company itself, 2.its suppliers 3.marketing intermediaries, 4.customer markets 5.competitors, 6. public's. Read More: [ ] User: How much energy does a 50-watt light bulb use compared to a 100-watt light bulb if both are shining for the same length of time? Explain your answer. Weegy: A watt is is a unit of power used over a given time. The 100W bulb uses double the energy of the 50W bulb. User: How does the strength of an electromagnet depend on the current and the number of turns in the coil? Weegy: If you place a wire over a compass then connect the ends to a DC battery the resulting electromagnetic force will deflect the (magnetic) needle. Increasing the current will increase the deflection. By doubling then tripling, etc. [ [ the turns of wire around a metal core you double then triple, etc. the total current and the electromagnetic effect. The iron core is not essential but does concentrate the electromagnetic effect as the magnetism builds up by aligning the tiny 'permanent' magnets (iron atoms) within the iron core. The greater the electromagnetic effect (turns), the great the number of iron atoms that are properly aligned building up a magnetic field. A permanent magnet may be produced by heating the iron hot enough to allow all atoms and iron crystals to permanently align when the sample is cooled down within a strong electromagnetic field. ] ] (More)
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