Physics

A 0.5kg wooden block is placed on top of a 1.0kgwooden block. The coefficient static friction between the two blocks is 0.35. The coefficient of kinetic friction between the lower block and the level table is 0.20 wht is the maximum horizontal force that can be applied to the lower block
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A dog can hear sounds in the range from 15to 50,000 Hz.What wavelength corresponds to the lowercut-off point of the sounds at 20C where thesound speed is 344 m/s?Answer in units of m.
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A concave lens is shown here. According to the model, a lens disperses rays after passing through it. Which item below most likely uses a concave lens to perform its typical function?
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A block of mass m1=3.0kg rests on a frictionless horizontal surface. A second block of m2=2.0kg hangs from an ideal cord of negligible mass that runs over an ideal pulley and then is connected to the first block . the blocks are released from rest . determine the displacement of the velocityA block of mass m1=3.0kg rests on a frictionless horizontal surface. A second block of m2=2.0kg hangs from an ideal cord of negligible mass that runs over an ideal pulley and then is connected to the first block . the blocks are released from rest . Determine how far has block 1 moved during the 1.2-s interval? A) 13.4 m B) 2.1m C) 28.2m D) 7.6mA block of mass m1=3.0kg rests on a frictionless horizontal surface. A second block of m2=2.0kg hangs from an ideal cord of negligible mass that runs over an ideal pulley and then is connected to the first block . the blocks are released from rest . determine the displacement of the velocityA block of mass m1=3.0kg rests on a frictionless horizontal surface. A second block of m2=2.0kg hangs from an ideal cord of negligible mass that runs over an ideal pulley and then is connected to the first block . the blocks are released from rest . Determine how far has block 1 moved during the 1.2-s interval?
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Force exerted by a person or an object is called an ______________________ force.
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13 Which of these fitness events happened LAST? OA. PE becomes part of American school curriculum. OB. Title IX forbids gender discrimination in sports. O C. The YMCA opens a gym in America. O D. The adjustable plate-loaded barbell is invented.
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a firefighter of mass 30 kg slides down a vertical pole with an acceleration of 5m/s^2. what is the net force acting on him?
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at what distance from a converging mirror with a 26 cm focal length should an object be placed so that its image is the same distance from the mirror as the object?
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the sound level measured in a room by a person watching a movie on a home theater system varies from 60 db during a quiet part to 90 db during a loud part. approximately how many times louder is the latter sound?
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Describe the shape of the graph, and explain what it says about the relationship between height and gravitational potential energy.
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water flows with constant speed through a garden hose that goes up a step 20.0 cm high. if the water pressure is 143 kpa at the bottom of the step, what is its pressure at the top of the step?
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the electric motor of a model train accelerates the train from rest to 0.700 m/s in 31.0 ms. the total mass of the train is 505 g. find the average power delivered to the train during its acceleration.
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Suppose you were to compare three stars with the same surface temperature. If star A is a giant star, star B is a supergiant star, and star C is a main sequence star, order the three stars in terms of increasing radius. a. Star C, Star A, Star B b. Star B, Star A, Star C c. Star A, Star C, Star B d. Star B, Star C, Star A
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lo4 pos what advantages does the hubble space telescope (hst) have over ground-based telescopes? list some disadvantages
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the same baseball is thrown at an angle of 23 degrees and at a speed of 26.8 m/s. the ball is caught 33.456 m from the thrower. the acceleration of gravity is 9.81 m/ss. how high is the tallest spot in the ball's path?
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What would you expect the force to be if the distance was 30 meters? How did you come up with your answer?
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jasmin, a cyclist, accelerates from rest. after 8 s, the wheels have made 3 revolutions. (a) what is the angular acceleration of the wheels? (b) what is the angular velocity of the wheels after 8 s?
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compare the above electric field to the electric field of a large parallel plate capacitor with the same voltage and distance between the plates. which one is larger? is this expected? explain.
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What layer of earth can you see through a open hole?
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how does the capacitance of two identical capacitors connected in parallel compare to that of one of the capacitors?
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a skateboarder jumps on a moving skateboard from the side. does the skateboard slowdown or speed up in this process?
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you are standing on a scale in an elevator. suddenly you notice your weight increases. what do you conclude?
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a 3.2 hz continuous wave travels on a slinky. if the wavelength is 0.47 m, what is the speed of waves on the slinky (in m/s)?
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a constant force is applied to an object, causing the object to accelerate at 7.50 m/s2 . what will the acceleration be if the force is doubled and the object's mass is halved?
1 Answer