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what is the difference between an ordinary piece of iron and iron magnet?
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Which of the following does not represent a contact force?
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Which is the correct scientific notation of the number 0.000681?
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The table lists pressure and volume values for a particular gas. Which is the best estimate for the value of V at P = 7.0 103 pascals?P (pascals)V (liters)5.0 1036.01.5 1043.02.0 1042.02.5 1041.5
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Consider the situation illustrated in the figure below. If = 35 and the masses of blocks B and A are, respectively, Mb and Ma= 0.4Mb, (a) what should be the minimum value of the static coefficient of friction s between the table and block B so that the system remains in balance? (b) In this case, what will be the tension in the rope segment connected to (node) and the vertical wall?
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A plane starting from rest accelerates to 40 m/s in 10 s. How far did the plane travel during this time?PLEASE ANSWER FAST!! Thankew
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people are more likely to treat someone kindly if they've you that person's bad behavior as the result of an external attributiontrue or false
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HELP 75 POINTS ON THE LINE MULTIPLE CHOICE! At the top of its arc, a thrown ball has ______ potential energy and _______kinetic energy. A) zero, maximumB) maximum, maximumC) maximum, zeroD) minimum, maximum
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In a certain part of the North America Nebula, the amount of interstellar extinction in the visual wavelength band is 1.1 magnitudes. The thickness of the nebula is estimated to be 20 pc and it is located 700 pc from Earth. Suppose that a B spectral class main-sequence star is observed in the direction of the nebula and that the absolute visual magnitude of the star is known to be M(V) = -1.1 from spectroscopic data. Neglect any other sources of extinction between the observer and the nebula. Show all your work, assumptions, equations, and units.1. Find the apparent visual magnitude of the star if it is lying just in front of the nebula.2. Find the apparent visual magnitude of the star if it is lying just behind the nebula.
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Which action can be explained by physics?
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HELP 25 POINTS MULTIPLE CHOICEThe energy due to the motion of an object is....A)non mechanical B) potential C) thermal D) kinetic
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How are living things organized into domains and kingdoms? Check all that apply
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This demonstrates which of the following?
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ANSWER ASAP!! EASY!!just fill in the blanks
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_ Ba+_O2 =_BaO how do I balance this?
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A way of showing how energy moves through an ecosystem _________
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What adjustments to an electromagnet that causes the electromagnet to lose a strength
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Why does a Parallel Circuit still continue to function after a switch turns off one bulb but continues to pass through the second bulb? (please be as specific as possible)
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How does the body maintain homeostasis? Give two or more examples of how this is accomplished. Provide supporting details. Be detailed in your answer
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Which scientist was the first to propose the heliocentric model of the universe?
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Which statement about velocity is true?
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A sled plus passenger with total mass m = 53.1 kg is pulled a distance d = 25.3 m across a horizontal, snow-packed surface for which the coefficient of kinetic friction with the sled is k = 0.155. The pulling force is constant and makes an angle of = 28.3 degrees above horizontal. The sled moves at constant velocity.Required:a. Write an expression for the work done by the pulling force in terms of m, g (acceleration due to gravity), , k, and d.b. What is the work done by the pulling force, in joules?c. Write an expression for the work done on the sled by friction in terms of m, g (acceleration due to gravity), , k, and d.d. What is the work done on the sled by friction, in joules?
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A car starts from rest and accelerates along a straight line path in one minute. It finally attains a velocity of 40 meters/second. What is the car's average acceleration?
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Alan walked 6.8 kilometers to his friends house. What is the distance in meters?
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