Physics

A sperm whale can accelerate at about 0.0900 m/s 2 when swimming on the surface of the ocean. How far will a sperm whale travel if it starts at a speed of 0.700 m/s and accelerates to a speed of 2.18 m/s ? Assume the whale travels in a straight line.
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The organism shown above belongs to A. the plant kingdom. B. both the animal kingdom and the protist kingdom. C. the animal kingdom. D. the protist kingdom.The organism shown above belongs to A. the plant kingdom. B. both the animal kingdom and the protist kingdom. C. the animal kingdom. D. the protist kingdom.The organism shown above belongs to A. the plant kingdom. B. both the animal kingdom and the protist kingdom. C. the animal kingdom. D. the protist kingdom.
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When and if Galileo dropped two balls of the same size but different masses from the top of the Leaning Tower of Pisa, air resistance was not really negligible. Which ball actually struck the ground first?
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Which example is a physical change? a change that produces a new element a change that breaks a bond between atoms a change that produces a new compound a change from one state of matter to another
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Which of the following statements is/are true? Check all that apply. Check all that apply. The total mechanical energy of a system is constant only if nondissipative interactions occur. Mechanical energy can be dissipated to nonmechanical forms of energy. The total mechanical energy of a system is equally divided between kinetic and potential energy. The total mechanical energy of a system is constant only if dissipative interactions occur. The total mechanical energy of a system, at any one instant, is either all kinetic or all potential energy.
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For how long a time must a tow truck pull with a force of 550N on a stalled 1200kg car to give it a forward velocity of 2.0m/s?
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A garden hose is attached to a water faucet on one end and a spray nozzle on the other end. The water faucet is turned on, but the nozzle is turned off so that no water flows through the hose. The hose lies horizontally on the ground, and a stream of water sprays vertically out of a small leak to a height of 0.62 m .What is the pressure inside the hose?
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How does the specific heat capacity of water compare with that of other common substances?
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A light-rail commuter train speeds up at a rate of 1.65 m/s 2 and takes 19.0 s to reach its top speed. How far down the tracks does the train go to reach its top speed if starting from rest?
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(a) If is in standard position, then the reference angle is the acute angle formed by the terminal side of and the . So the reference angle for = 110 is = , and that for = 210 is =
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A projectile is fired upward at an angle above the horizontal with an initial speed v0. At its maximum height, what are its velocity vector, its speed, and its acceleration vector?
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Earthquakes are essentially sound wavescalled seismic wavestraveling through the earth. Because the earth is solid, it can support both longitudinal and transverse seismic waves. The speed of longitudinal waves, called P waves, is 8000 m/s. Transverse waves, called S waves, travel at a slower 4500 m/s. A seismograph records the two waves from a distant earthquake. The S wave arrives 2.0 min after the P wave. Assume that the waves travel in straight lines, although actual seismic waves follow more complex routes. If the S wave arrives 2.3 min after the P wave, how far away was the earthquake?
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Distillation of mixtures of ethanol and water cannot increase the ethanol content of the mixture above 95% because this solution boils at a lower temperature than either pure ethanol or pure water. The term which describes this lower boiling mixture is ________.
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A force 8.0 newtonsis is applied to an object with a mass of 250g.what will be the acceleration of the object due to the force?
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A ripe acorn falls down from a branch with an initial velocity v0 = 0. The acorn's vertical displacement until it hits the ground (neglecting the effects of air) could be derived using
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You walk 53 m to the north, then you turn 60 to your right and walk another 45 m. Determine the direction of your displacement vector. Express your answer as an angle relative to east.
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Tap water conducts electricity because 1. water is a polar molecule; the charged ends inherently conduct electricity. 2. tap water has many ions dissolved in it, which are responsible for the conduction of electricity. 3. water is held together by weak dispersion forces, which allow the molecules to move readily and conduct electricity. 4. the hydrogen bonds in liquid water provide a bridge for the movement of electrons.
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A 90-m-long high-voltage cable is suspended between two towers. The mass of the 90-m cable is 100 kg. If the tension in the cable is 25 000 N, what is the lowest frequency at which this cable can oscillate?
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Which of the following statements are true?1. Good conductors of electricity have larger conductivity values than insulators.2. A material that obeys Ohm's law reasonably well is called an ohmic conductor or a linear conductor.3. Semiconductors have resistivity values that are larger than those of insulators. 4. The resistance of a conductor is proportional to the conductivity of the material of which the conductor is composed. 5. The resistance of a conductor is proportional to the resistivity of the material of which the conductor is composed.
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A 100 sprinter starts from rest and final velocity of 18.8m/s what is the sprinter average acceleration if takes him 10.6 s to run the 100m race
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44. ( John weighs 80 kg, and eats a 1,000 J candy bar. If hisbody perfectly transforms the energy in the chocolate intokinetic energy, what is the fastest he can run?
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A proton and an electron form a dipole separated by 1.5e-10 m along the y-axis centered at the origin. What is the magnitude of the net electric field at 6.9e-10 m on the y-axis?
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Which chemical equation represents a double replacement reaction?A. Zn + 2HCI ZnC1, +H,B. 2KCIO, +2KC1 + 30,C. 2Na+C1, +2NaCID. NaOH + HCI NaCl + H,0
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Which of the following best explains why the Moon's orbital period and rotation period are the same? a. The Moon was once closer to Earth, but the force of gravity got weaker as the Moon moved farther away. b. The Moon once rotated faster, but tidal friction slowed the rotation period until it matched the orbital period. c. The equality of the Moon's orbital and rotation periods is an extraordinary astronomical coincidence. d. The law of conservation of angular momentum ensured that the Moon must have the same amount of rotational angular momentum as it has of orbital angular momentum.
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