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Before you begin your lab, you need to form a hypothesis that reflects which material, voltage, and number of winds you think will produce the strongest electromagnet
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The components of vector A and vector B are: Ax=+7.6 Bx=+15.2 Ay=-9.2 By=-18.4 which equation describes the relationship between the two vectors? A. B=A+(2,0) B. B=A C. B=7.6A D. 68
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Javelin at 72 meters/second. he throws it at an angle of 22 degrees. how fast is he throwing it in the x-direction in meters/second?
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When the block is 0.22 m from the equilibrium position (half of the initial displacement), what percent of the total energy of the spring-block system is kinetic energy?
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A camera lens with index of refraction greater than 1.30 is coated with a thin transparent film of index of refraction 1.25 to eliminate by interference the reflection of light at wavelength λ that i
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What is the volume v of a sample of 2.40 mol of copper? the atomic mass of copper (cu) is 63.5 g/mol, and the density of copper is 8.92×103kg/m3?
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Based on this flow rate, and aorta diameter of 0.7 cm, calculate the average velocity and reynolds number of flow in the aorta. is the flow likely to be laminar or turbulent?
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A boeing 747 aircraft weighing 580,000 lb when loaded with fuel and 100 passengers takes off with an airspeed of 140 mph. with the same configuration (i.e., angle of attack, flap settings, etc.), what
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Unpolarized light passes through three ideal polarizing filters. the first filter is oriented with a horizontal transmission axis, the second one has its transmission axis at 30° from the horizontal,
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An rlc circuit has a capacitance reactance, due to its capacitance, of 11 kω; an inductive reactance, due to its inductance, of 3 kω; and a resistance of 29 kω. what is the power factor of the circ
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A long, flexible, and very light strip of metal, such as a saw blade, is clamped to the edge of a table, extending horizontally over the edge like a miniature diving board. when a gob of putty is plac
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What spring constat would you need to have a 3 kg mass oscillate on the spring iwht hte same period t as the mass owuld have hanging from a simple?
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Which has the larger kinetic energy, a 13 g bullet fired at 490 m/s or a 10 kg bowling ball rolled at 11 m/s?
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A soccer ball is kicked with a speed of 20 m/s at an angle of 35 degrees above the horizontal. how long is the ball in the air?
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A 58-in. (inside) diameter garden hose is used to fill a round swimming pool 7.5 m in diameter. part a how long will it take to fill the pool to a depth of 1.7 m if water issues from the hose at a spe
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What frequency frecede is heard by a passenger on a train moving at a speed of 18.0 m/s relative to the ground in a direction opposite to the first train and receding from it? express your answer in h
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A counter-flow double-pipe heat exchanger is to heat water from 20°c to 80°c at a rate of 1.2 kg/s. the heating is to be accomplished by geothermal water available at 160°c at a mass flow rate of 2
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What minimum number of cycles are necessary for the engine to lift a rock of mass 570 kg through a height of 150 m?
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68 kg tennis ball is given an angular momentum of .00272 kgm2/s when struck by a racquet. if its radius of gyration is 2 cm, what is its angular velocity
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A 129-kg astronaut (including space suit) acquires a speed of 2.30 m/s by pushing off with her legs from a 1850-kg space capsule. use the reference frame in which the capsule is at rest before the pus
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At a pressure of one atmosphere oxygen boils at −182.9°c and freezes at −218.3°c. consider a temperature scale where the boiling point of oxygen is 100.0°o and the freezing point is 0°o. deter
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The desk has a weight of 75 lb and a center of gravity at g. determine its initial acceleration if a man pushes on it with a force f = 60 lb. the coefficient of kinetic friction at a and b is mk = 0.2
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Consult concept simulation 6.1 in preparation for this problem. a golf club strikes a 0.065-kg golf ball in order to launch it from the tee. for simplicity, assume that the average net force applied t
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Calculate wa, the work done by the gas as it expands along path a from v0 to va=rvv0. express wa in terms of p0, v0, and rv.
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The gravitational acceleration on a planet's surface is 16.0 m/s2. what is the gravitational acceleration at an altitude of one planet diameter above the surface of the planet?
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(a) find the potential at point p. (q = 2.5 x 10-9c, a = 50 cm) (b) how much work by an external force is required to move a charge of - 3 µc to point p. (c) if the particle (mass = 5.0 µg) were rel
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What is the single most important parameter in determine the material removal rate in a machining process?
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True or false the light that is emitted from a semiconductor, upon external stimulation, is longer and longer in wavelength as the particle size of the semiconductor decreases.
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Consider three capacitors c1, c2, and c3 and a battery. if only c1 is connected to the battery, the charge on c1 is 32.2 µc. now c1 is disconnected, discharged, and connected in series with c2. when
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A charge per unit length given by l(x) = bx, where b = 12 nc/m2, is distributed along the x axis from x = +9.0 cm to x = +16 cm. if the electric potential at infinity is taken to be zero, what is the
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Using signed 8-bit representation, determine the result of 53 - 88. show how you got your answer using binary arithmetic and the 2's complement system.
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A horizontal uniform bar of mass 2.4 kg and length 3.0 m is hung horizontally on two vertical strings. string 1 is attached to the end of the bar, and string 2 is attached a distance 0.74 m from the o
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A beam of sound arrives perpendicular to your abdomen from the air. what's the percentage of sound energy density enters your body (regard as water)? (speed of sound in air and water is 340m/s and 1,5
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Two shuffleboard disks of equal mass, one orange and the other yellow, are involved in an elastic, glancing collision. the yellow disk is initially at rest and is struck by the orange disk moving with
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Cobwebs are popular decorations at Halloween time, but an experiment in which spiders were given psychoactive substances showed that it really affects their web spinning skills! The web below was spun
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If hubble's constant is actually half the value we believe it to be (70 km/(s mpc)), the universe would be
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A soccer player extends her lower leg in a kicking motion by exerting a force with the muscle above the knee in the front of her leg. she produces an angular acceleration of 27.5 rad/s2 and her lower
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A baseball is seen to pass upward by a window 20 m above the street with a vertical speed of 15 m/s. the ball was thrown from the street. (a) what was its initial speed? m/s (b) what altitude does it
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The sixth string of a guitar has standard tuning frequency of 82.41 hz. if the length of the vibrating string is 95.0 cm and its mass density is 8.90 g/m, what is the tension in the string at the stan
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If the coefficient of static friction is less than that found above, and if the coefficient of kinetic friction between the block and the table is .05, find the time it takes for the 6kg mass to fall
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Mike shoots a large marble (Marble A, mass: 0.05 kg) at a smaller marble (Marble B, mass: 0.03 kg) that is sitting still. Marble A was initially moving at a velocity of 0.6 m/s, but after the collisio
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What is the acceleration of an object if the velocity of am objects changes from 65 ms during a time interval of 12 s?
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A train travels 63 kilometers in 2 hours, and then 72 kilometers in 4 hours. What is its average speed?
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You are driving along a highway at 35.0 m/s when you hear the siren of a police car approaching you from behind and you perceive the frequency as 1,310 hz. you are relieved that he is in pursuit of a
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What is the self-inductance of a solenoid 30.0 cm long having 100 turns of wire and a cross-sectional area of 1.00 × 10-4 m2?
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A box is to be made out of a 12 by 20 piece of cardboard. squares of equal size will be cut out of each corner, and then the ends and sides will be folded up to form a box with an open top. find the l
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The left ventricle of a resting adult's heart pumps blood at a flow rate of 81.0 cm3/s, increasing its pressure by 110 mm Hg, its velocity from zero to 25.0 cm/s, and its height by 5.00 cm. (All numbe
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Different kinds of substances have different properties. Compare and contrast the electrical properties of salts, metals, and acids.
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A series circuit contains three 2 Ω resistors and a 6 Ω resistor. The current in each resistor is 4.0 A. What is the voltage of the battery in the circuit? 2.0 V 3.0 V 32 V 48 V
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Which one of the following statement does not accurately describe the diatonic scale as it corresponds to the setup on a piano keyboatd
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