Physics

7. A 2kg block is acted on by two forces F1 and F2 as shown in the diagram. If the magnitude of F1 = 13N and F2 = 11N. If the coefficient of kinetic friction is .23, find (A) The normal force exerted on it by the floor. (2 pts) (B) The acceleration on of the block (2 pts)
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What is the difference between a light wave and an infrared wave?
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A book with a mass of 1.5 kg rests on the edge of a desk 0.75 m above thefloor. Given that the acceleration due to gravity is 9.8 m/s2, what is the book'spotential energy? apex
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Which atmospheric layer gets warmer as altitude increases and contains the ozone layer?
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an antonym of lithium (Li) forms and an iconic bond with atom of chlorine CI to form lithium chloride. how are the valence electrons of these atoms rearranged to form this Bond ?
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PLEASE HELP IT IS URGENT! NET FORCE
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A planned high-speed train between Houston and Dallas will travel a distance of 386 kilometers in 5.40 10^3 seconds. What is the average speed of this train?
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Are these bones axial, appendicularor both?
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Newtons third law says that every time there is an interaction force, there is also a force that is ______________________ in size and acts in the ____________________________ direction .
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A cylinder of mass 250 kg and radius 2.60 m is rotating at 4.00 rad/s on a frictionless.Two more identical nonrotating cylinders fall on top of the first. Because of frictionbetween the cylinders they will eventually all come to rotate at the same rate. What is this final angular velocity?
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Knowing that 1 inch is equal to 2.54 centimeters, convert 287 cm to inches.
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What are the two parts of an atom? the nucleus and the proton coud the neutron and the electron the neutron and the proton cloud the nucleus and the second 00
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A ball is thrown upward in the air with an initial velocity of 40 m/s. How long does it take toreach back to the point it was thrown from?
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A car is pushed and travels 12 m. The same car is then pushed and it travels 15m. Whatcould have happened? Select 2 answers.The mass was decreasedThe force was increasedThe force was decreasedThe mass was increased
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A car traveling at 7 m/s accelerates at 2.5 m/s^2 to reach a speed of 12 m/s. How long does it take for this acceleration?
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A recipe for a casserole calls for 1 cup of milk. If a chef currently has 0.5 gallons of milk, how many casseroles can the chef make?
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The boundary between areas of high and low pressure:A FrontB BarometerC Weather D Air pressure
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The equation for photosynthesis is 6H2O (water) + 6CO2 (carbon dioxide) + Light Energy C6H12O6 (glucose) + 6O2 (oxygen). When first discovered, scientists were trying to decide if the oxygen in the product came from carbon dioxide or water. Which statement describes how scientists traced the path of oxygen?They used a radioactive isotope and tracked it with a Becquerel counter.They used a radioactive isotope and tracked it with a Geiger counter.They used a stable isotope and tracked it with a Becquerel counter.They used a stable isotope and tracked it with a Geiger counter.
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Help please and explain elaborately thanks in advanced
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3. An earthquake measures 3 on Richterscale:(i)Would it be recorded by a seismograph ?(ii)ls it likely to cause much damage ?
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energyPotential energy + Kinetic energyOA) HeatOB) ChemicalElectricalOD) Mechanical
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can you pls give a question about science. like why does the sky blue? PLS HELPPP ASAP
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A rock climber is going up a narrow space between two vertical rocks. The distance between the rocks allows the climber to brace herself using friction, where her feet are flat and in contact with one rock to the left, and her legs are straight horizontal and her back is flat against a rock on the right. The coefficient of static friction between her shoes and the rock on the left is 1.2, and between the rock at right and her back is 0.8. The climber relaxes until she is on the verge of slipping on both sides.(a) Draw a FBD for the climber (b) What fraction of her weight is supported by the frictional force on her shoes?
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Which action describes the first step in both scientific investigation and technological design?researching how solar panels workidentifying a need for a solar panelcommunicating to the team that solar panels are easy to installdesigning a solution by sketching a prototype for a solar panel
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