Physics

A metal wire of diameter 1. 00 mm can support a tension of 0. 240 kn. A construction worker needs a cable made of these wires to support a tension of 20. 0 kn. The cable should have diameter (in cm) of what order of magnitude?
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An electronic device requires a power of 15 w when connected to a 9.0-v battery. how much power is delivered to the device if it is connected to a 6.0-v battery
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A 50. 0-kg box is being pulled along a horizontal surface by means of a rope that exerts a force of 250 n at an angle of 32. 0 above the horizontal. The coefficient of kinetic friction between the box and the surface is 0. 350. What is the acceleration of the box?.
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Why are Buildings in UAE made with glazed glass?
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Much like scientists study cause and effect, firefighters and fire investigators observe the effects of a fire and try to find out its cause. Read the following example:An office building caught fire early one morning, just as people were coming to work. Something caused the fire, and fire investigators need to collect data todetermine what did it. Place a checkmark next to the data that could be related to the fire in this office building and could help them determine its cause:- A light switch with worn electrical wiring was found on the thirdfloor.- Gasoline was stored in the basement of the building.- The building is in the downtown area of a big city.- It took firefighters 45 minutes to put out the fire.- The fire started on the third floor of the building.- People coming to work turned on the lights in the building.- People smoking in bed can start fires.- Oily rags were kept in an open container on the first floor.
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Can someone please help me with this lesson outline?
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Consider the two-slit experiment. Light strikes two slits that are a distance 0. 0236 mm apart. The path to the third-order bright fringe on the screen forms an angle of 2. 09 with the horizontal. What is the wavelength of the light?
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Two objects of the same mass travel in opposite directions along a horizontal surface. Object x has a speed of 5ms and object y has a speed of 5ms, as shown in the figure. After a period of time, object x collides with object y. In scenario 1, the objects stick together after the collision. In scenario 2, the objects do not stick together after the collision
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A constant-pressure R-134a vapor separation unit separates the liquid and vapor portions of a saturated mixture into two separate outlet streams. Determine the flow power needed to pass 5. 8 L/s of R-134a at 320 kPa and 55 percent quality through this unit. What is the mass flow rate, in kg/s, of the two outlet streams
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1. During a summer storm, a bolt of lightning is seen. A short time later, thunder is heard. If the lightning struck 3. 50 km away, what was the time period between the lightning and thunder? The speed of sound in air is 331. 0 m/s at 0. 00 C but the temperature is actually a warm 30. 0 C. Show your work!2. The following measurements were made using a Kundts tube generator as was done in our virtual lab. Distance from node (crest) to node (trough) = 56. 5 cm at a frequency of 894Hz. What was the velocity of sound in the tube? Knowing that the standard velocity of Helium is 1007 m/s, Air is 340 m/s and Carbon dioxide is 267 m/s, which gas was in the tube? (Assume all were at the same temperature)
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1. solve this!!! pls help
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You do 25 J of work in pushing a crate up a ramp. If the output work from theinclined plane is 10 J, then what is the efficiency of the inclined plane?
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Which therapy is associated with light waves, but not sound waves? breaking down kidney stones acoustically targeting the delivery of a drug cauterizing an incision or wound ablating tumors
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The half life of carbon 14 is about 5670 years. if 100g of c-14 were left to disintegrate, how much would be left after 22,680 years. Also I need the Fraction:Percent: and the Mass: someone give me the answer please and quick
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One who is capable of identifying existing and predictable.
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a military airplane sometimes needs to refuel in mid-air, and another plane flies above it to add the fuel. if a plane with a mass of 7,800 kg is traveling with a velocity of 30 m/s and refuels by adding an additional 800 kg of jet fuel, what will its new velocity be?
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Which branch of science is more interesting for you? Write any two points about your interest. What scopes do you expect in the corresponding branches of science?
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Consider example 20. 15, what angle of deflection would you get if the electron gun distance as well as electron defelctor distance were to both double, with the electric fields staying as in the example?.
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A wood block of mass m rests on a larger wood block of mass M that rests on a wooden table. The coefficients of static and kinetic friction between all surfaces are s and k , respectively.A)What is the minimum horizontal force, F , applied to the lower block that will cause it to slide out from under the upper block? To solve this problem, assume that the force is applied so suddenly that both blocks slip at the same time. Express your answer in terms of some or all of the variables m , M , s , k , and appropriate constants. F=?
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Two thin parallel slits that are 1.0210^2 mm apart are illuminated by a laser beam of wavelength 580 nm .Part AOn a very large distant screen, what is the total number of bright fringes (those indicating complete constructive interference), including the central fringe and those on both sides of it? Solve this problem without calculating all the angles! (Hint: What is the largest that sin can be? What does this tell you is the largest value of m?)Part BAt what angle, relative to the original direction of the beam, will the fringe that is most distant from the central bright fringe occur?
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Two wind turbines are set up with the following conditions: Turbine Ahas blades that are twice as long as the blades on Turbine B. The tips of the blades on Turbine A are moving twice as fast as the tips of the blades on Turbine B. Part D Which turbine takes the lesser amount of time to rotate through 1.0 radian of angular displacement? A. turbine A a turbine B They take the same amount of time. The answer cannot be determined from the information given. ; Subrnit Request Answer Part 5 29 As in Part D, two wind turbines with different length blades are rotating. Consider what needs to happen in order to change the angular speed of one of the turbines. If the turbine is to spin more quickly, should the angular acceleration, a be positive or negative?B. a should be positive.C. a should be negative. D. We cannot tell which direction a should be without knowing the direction of the angular velocity,
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1) Calculate the centripetal force acting on a 925 kg car as it rounds an unbanked curve with a radius of 75 m at a speed of 22 m/s. 2) A car with a mass of 833 kg rounds an unbanked curve in the road at a speed of 28. 0 m/s. If the radius of the curve is 105 m, what is the average centripetal force exerted on the car? 3) An amusement park ride has a radius of 2. 8 m. If the time of one revolution of a rider is 0. 98 s, what is the speed of the rider? 4) An electron (m=9. 11x10 -31kg) moves in a circle whose radius is 2. 00 x 10 -2m. If the force acting on the electron is 4. 60x10 -14N, what is its speed? 5) A 2. 7x10 3kg satellite orbits the Earth at a distance of 1. 8x10 7m from the Earths centre at a speed of 4. 7x10 3m/s. What force does the Earth exert on the satellite?6) A string can withstand a force of 135 N before breaking. A 2. 0 kg mass is tied to the string and whirled in a horizontal circle with a radius of 1. 10 m. What is the maximum speed that the mass can be whirled at before the string breaks? 7) A motocross rider at the peak of his jump has a speed such that his centripetal acceleration is equal to g. As a result, he does not feel any supporting force from the seat of his bike, which is also accelerating at rate g. Therefore, he feels if there is ni force of gravity on him, a condition described as apparent weightlessness. If the radius of the approximately circular jump is 75. 0 m, what is the speed of the bike?
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What is the torque exerted by the wrench in scenario b?
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Electron and positron each with kinetic energy 220kev are generated by photon, what is the energy and wavelength
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