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You are working out on a rowing machine. each time you pull the rowing bar (which simulates the oars) toward you, it moves a distance of 1.1 m in a time of 1.3 s. the readout on the display indicates
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What will a spring scale read for the weight of a 50-kg woman in an elevator that moves upward with constant speed 5.0 m/s?
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A fire ant, searching for hot sauce in a picnic area, goes through three displacements along level ground: d1 for 0.40m southwest (that is, at 45° from directly south and from west), d2 for 0.50m due
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The turntable of a record player has an angular velocity of 6.1 rad/s when it is turned off. the turntable comes to rest 4.4 s after being turned off. through how many radians does the turntable rotat
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Tarzan, in one tree, sights jane in another tree. he grabs the end of a vine with length 28 m that makes an angle of 46° with the vertical, steps off his tree limb, and swings down and then up to jan
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Radio wave radiation falls in the wavelength region of 10.0 to 1000 meters. what is the wavelength of radio wave radiation that has an energy of 2.23×10-30 kj/photon? wavelength = m
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Find (a)the magnitude and (b) direction of the weakest electric field that can bring the proton uniformly to rest over a distance of 3.10 cm .
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A traveler pulls on a suitcase strap at an angle 36° above the horizontal. if 642 j of work are done by the strap while moving the suitcase a horizontal distance of 15 m, what is the tension in the s
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Assuming negligible friction, what spring constant force constant would be needed by the sprin gin a b-b gun to fire a 10-g pellet
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A 4.0 x 10^4 N Truck moving west at a velocity of 8.0 m/s collides with a 3.0 x 10^4 N truck heading south at a velocity of 5.0 m/s. If these two vehicles lock together upon impact, what is their velo
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A 0.500 kg object is thrown vertically upward with an average applied force of 8.20 N by a student. The force is applied through a displacement of 1.50 m a. What is the average net force acting on the
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Physics Lab report. Please this carefully and do your best.
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A golf ball of mass 50 g is at rest on a tee. Then a golf club strikes it, providing the ball with an initial speed of . The club and ball were in contact for What is the average force that the club e
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A vehicle ___________ occurs when the driver begins to back up and is unaware that a person is behind the vehicle.
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Which has a higher acceleration: a 10 kg object acted upon with a net force of 20 N or an 18 kg object acted on by a net force of 30 N
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Legislation covering the maximum dosage limits for persons who are subject to radiation at work are specified in all countries’ legislation. Using information from the Learning Packages and other so
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An electric field of magnitude E=360.0 N/C at a distance r=5.0 cn from the center of a charged conducting sphere is directed away from the sphere. the sphere has a radius r=3.0 cm.
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Eddie and Val observed the picture of an athlete running in a race. Eddie stated the picture shows potential energy being transformed to kinetic energy. Val stated that it shows chemical energy being
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Design a hydraulic system to safely lift a 200kg mass through a vertical height of 1 meter in a time of 2 seconds. Assume a working pressure of 10 MPa. What you should calculate: 1. Determine the dime
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A forklift raises a 1020 N crate 3.50 m up to a shelf l. How much work is done by the forklift on the crate? The forklift does J work on the crate.
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A horse does 910 J of work in 380 seconds while pulling a wagon. What is the power output of the horse? Round your answer to two significant figures. The power output of the horse is W.
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You devise a wind-up car powered by a spring for trips to the grocery store. The car has an inertia of 520 kg and is 4.1 m long. It should be able to accelerate from rest to 20 m/s at least 50 times b
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Based on the diagram below, which of the waves listed below has the shortest wavelength? A. radio waves B. x-ray waves C. infrared waves D. ultraviolet waves
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Tectonic plates are large segments of the earth crust that move slowly. Suppose one such plate has an average speed of 4.5cm per year. What distance does it move in 100 seconds at the speed? What is i
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How many grams of iron metal do you expect to be produced when 245 grams of an 80.5 percent by mass iron (II) nitrate solution react with excess aluminum metal? Show all of the work needed to solve th
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The theory of plate tectonics describes this process as a gradual movement of the tectonic plates across the Earth’s lithosphere.
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Photosynthesis is a process in which plants prepare food using carbon dioxide, chlorophyll, and water in the presence of sunlight. During photosynthesis, energy is transformed into energy.
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Sarah and her friends the swim team are playing on the high dive. One of Sarah's friends throws her back pack, containing her swim supplies, into the pool from the high dive platform. The back pack we
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Sam and Sally are both running the mile at the region track meet. One mile equals four laps around the oval track. They are neck and neck during most of the race, but at the half-mile mark Sam starts
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A car travelling at 50m/h on a horizontal highway (a) if the coefficient of static friction between road and tyres on a rainy day is 0.100, what is the minimum distance in which the car will stop?
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Two electric bulbs marked 100W 220V and 200W 200V have tungsten filament of same length. Which of the two bulbs will have thicker filament?
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A method that uses a mathematical equation and the half-life of decay to determine the exact date of a fossil is known as _______. a. relative dating c. absolute dating b. comparative dating d. half-l
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Stion 1A body with initial velocity 8.0 m/s moves along a straight line with constant accelerationand travels 640 m in 40 s. For the 40 s interval, find (a) the average velocity, (b) the finalvelocity
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A golf course sprinkler system discharges water from a horizontal pipe at the rate of 7300 cm3/s. At one point in the pipe, where the radius is 4.84 cm, the water's absolute pressure is 2.8 105 Pa. A
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Which best describes what is occurring when a door is almost closed and rays of light fan out from the small opening?
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Derek’s organization uses an emerging technology that uses specialized software to place an image on an object, add dimensions to the image, and create an optical illusion of a moving object. Which
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What is the strength of the electric field 2.4 cm from a small plastic bead that has been charged to -9.0 nc ?
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The young's modulus of steel is 2.0 x 1011 n/m2 and the tensile strength is 8.0 x 108 n/m2 . the density of steel is 7.9 x 103 kg/m3 . (a) what is the maximum length of a steel cable that can hang ver
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The mass of a golf ball is 45.9 g . if it leaves the tee with a speed of 65.0 m/s , what is its corresponding wavelength?
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A solid object heated to 120°C is placed inside a container of water at 33°C. What is the BEST explanation of the resulting change in temperature? A) The temperature of both the water and solid will
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The appearance of color is a result of the absorption and reflection of certain wavelengths of light. A shirt appears a certain color because it reflects that color of light. On the other hand, a shir
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Which pair of vectors could be added together to form the vector shown? A.) 6 units left, 7 units down B.) 7 units right, 6 units down C.) 7 units left, 6 units down D.) 6 units right, 7 units down
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If a moving car speeds up until it is going twice as fast,how much kinetic energy does it have compared with its initial kinetic energy?
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A body of mass 5kg falls from height of 10m above the ground what kinetic energy of the body before it strike the ground
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A ball is left at an angle of 25 degrees to the horizontal from a plane at a height of 10 m with a velocity of 12m/s at what distance will the ball land on the horizontal surface at zero height?
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The part of the flower responsible for producing pollen (sperm) is the _______. A. stigma B. anther C. style D. filament
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A force of 58 newtons is applied to a crate at an angle of 32° with the horizontal. What is the value of force acting in the y–direction? 15.7 newtons 30.7 newtons 39.5 newtons 49.2 newtons
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According to Einstein’s theory, how does an increase in the number of photons affect a beam of light? The wavelength of the beam of light increases. The speed of the beam of light increases. The bri
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Researchers conducted an experiment to identify the effects of three different hand sanitizers on the growth of bacteria. The researchers grew one type of bacteria in twenty-four identical covered pet
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Please read carefully. I need Lab Report and Answers of questions. Thank you.