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Megan left her bicycle outside on the patio while she went on vacation for several weeks. When she returned, Megan discovered a reddish substance, rust, on the handlebars of her bicycle. The rust is a
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A 150 kg object takes 1.5 minutes to travel a 2500 straight path it begins the trip traveling 120 m/s and decelerates to a velocity of 20 m/s what was its acceleration
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An object with a mass of 7.65kg dropped from the top of a building and falls a distance of 28 m to the ground how much work does earth gravity do on the object from the time it is dropped to the time
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Light travels at a speed of 1.86 X 105 miles per second. The sun is approximately 9.3 X 107 miles. About how long does it take light to travel from the sun to the earth ?
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A roofing tile slides down a roof and falls off the edge 10m above the ground at a speed of 6 m/s. The roof makes an angle of 30 degrees to the horizontal. How far from the exit point on the roof does
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A source vibrating at constant frequency generates a sinusoidal wave on a string under constant tension. If the power delivered to the string is doubled, by what factor does the amplitude change?
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When two capacitors are connected in parallel across a 12.0 v rms, 1.32 khz oscillator, the oscillator supplies a total rms current of 554 ma . when the same two capacitors are connected to the oscill
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Water is the working fluid in an ideal rankine cycle. saturated vapor at 1000 psia enters the turbine. the condenser pressure is 1 psia and the working fluid exits the condenser as saturated liquid. t
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Why can the moon eclipse the sun on occasion? 1. sometimes they line up in a straight line. 2. the moon apears about the same size of the sun 3. the moon and sun both have an angular diameter of ½ de
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Most often we say that force causes acceleration. but when evan took a ride in a rocket sled at bonneville salt flats, blood was forced to the back of his brain, nearly blacking him out. identify the
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Determine how many times per second it would move back and forth across a 4.1-m-long room on the average, assuming it made very few collisions with other molecules.
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By how much does the tunneling current through the tip of an stm change if the tip rises 0.020nm from some initial height above a sodium surface with a work function w=2.28ev? (hint: let the work func
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A circular coil of 20 turns and radius 5.0 cm is placed with its plane oriented at 90° to a uniform magnetic field of 0.10 t. the field is now increased at a steady rate, reaching a value of 0.50 t a
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What did Kikunae Ikeda discover, and how did it change the way taste is perceived almost a hundred years later?
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A solution is a special mixture where you cannot see the individual substances that are mixed. You look at two bowls of ice cream. One bowl is plain vanilla ice cream and the other is vanilla with cho
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A relationship between distance and velocity is expressed by: parallax angles Cepheid variables astronomical units the Hubble Constant
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The solar nebula was a _____. rotating cloud made mostly of helium and hydrogen small galaxy gigantic sun central star surrounded by helium and hydrogen
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A golfer hits a golf ball at an angle of 30 degrees from the ground, with an initial velocity of 120 ft/sec. It lands on the ground, after 5 seconds? How far did the golf ball travel horizontally?
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Which of the following would most likely happen if water did not form hydrogen bonds A.Water would exist only as a solid. B. Water would be able to dissolve all ionic compounds. C. Water would not e
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A cube has a mass of 100 grams and its density is determined to be 1 g/cm 3 . The volume of the cube must be _____.
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19. In which one of the following locations can a person hear the echo of a sound? A. At least 16.6 meters in front of the reflecting surface B. At least 33.2 meters behind the reflecting surface C. L
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One section of a steel railroad track is 25 meters long, if its temperature increases by 40 K during the day, how long does the track expand? The coefficient of linear thermal expansion of steel 6 12
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As light passes from air to water, some light is reflected from its surface. The angle of reflection is: A) less than the angle of refraction B) greater than the angle of refraction C) equal to the
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A wooden block A of mass 4.0 kg slides on a frictionless table when pulled using a massless string and pulley array by hanging box B of mass 5.0 kg, as shown in the figure. What is the acceleration of
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O2 is a molecule. oxygen gas Question 1 options: True False Question 2 (1 point) Question 2 Saved Look at the image below: Which of the following is true? Question 2 options: All figures represent mol
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In the animal cell, which of the labeled organelles is the rough endoplasmic reticulum? A) 2 B) 5 C) 9 D) 10
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In a simple electric circuit, a 110-volt electric heater draws 2.0 amperes of current. What is the resistance of the heater?
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If you are in a boat over the mariannas trench and dropped an 8lb bowling ball overboard, how long would it take to reach the bottom?
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Which scenario would most likely result in the greatest percent error of the density of each metal? Assume Priya uses the same scale and graduated cylinder for each metal. using a graduated cylinder c
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An engine takes in QH JOULES OF HEAT AT A HOT TEMPERATURE T
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MY QUSTION IN THE ATTACH CONSIDER A COLLECTION OF THREE POINT ACHARGE TWO EEQ
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A 51-kilogram sled is at rest. Susan pushes the sled until it travels at 11 meters per second. How much work has Susan done?
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A cyclist rode at an average speed of 15mph for 30miles how long was the ride A) 0.5 1 Hour B)1 Hour C)2 Hours D)3 Hours
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The area under which of these graphs can be used to estimate the value of impulse? Graph A Graph B Graph C Graph D
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True or false forces such as weathering and erosion that work to wear away high points and flatten out earths surface are called constructive forces
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Multicellular plants and animals have organs to perform specific functions.What do eukaryotic cells have to perform specific functions. A:ribosomes B:organelles C:cytoplasm D:vacuole
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When a baseball player catches a baseball, the glove "gives" or moves backward. How does this movement affect the change in momentum of the baseball? The change in momentum increases because the impac
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If you went on the moon’s near side during a new moon, how much of the side of Earth facing you would be sunlit?
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I am doing a paper on physics and I need a claim about how enry transformations when someone is kicking a soccer ball
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Why would fossils found at the top of a canyon probably be younger than those found at the bottom of the canyon
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A fulcrum moving a resistance of 200 g has a distance to the fulcrum of 20 cm, the effort mass of 50 g has a distance to the fulcrum of 80 cm. The resistance moves 10 cm, the effort moves 40 cm. Calcu
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Sue observes that when a baseball player slides toward a base, the ground exerts friction away from the base. Based on her observation, which conclusion is correct?Friction acts at a distance. Fricti
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A D note has a frequency of 587.33 Hz. Calculate its wavelength in meters. CAN SOMEONE EXPLAIN HOW TO DO THIS PLEASE? currently I found the answer of 0.579m but don't know how to get there.
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Within any ecosystem, there is a fixed amount of energy available for organisms to use. Since organisms usually produce more offspring than a given ecosystem can support, this causes _______.
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You do 116 J of work while pulling your sister back on a swing, whose chain is 5.10 m long, until the swing makes an angle of 32.0° with the vertical. What is your sister's mass?
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In the levers lab when you changed the position of the fulcrum, what else changed? A.Weight B.Gravity C.Resistance Force D.Effort Farci
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When you jump on the ground, the Earth exerts a greater force back up on you because it is so massive. Please select the best answer from the choices provided T F
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This is an Assignment, it's not a quiz question it's a question my teacher gave me for the assignment. "Why is a globe useful as Scientific Models?" If you could explain it in 2 or 3 sentences that wo
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Q8I ATTACHED THE QUSTIONThe figure below shos a conducting loop being pulled out of a magnetic field at constant speed v. the width of the loop is W=0.14 m , the length of the loopis L =1.11 m , (L i
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Which statement best describes the relationship between period and frequency of light waves? A) In wave B the period increases and the frequency is decreases from wave A. B) In wave A the period incre