Physics

how much work is required to move it at constant speed 5 m along the floor against a frition force of 350 n
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a block slides along a rough surface and comes to a stop. what can you conclude about the frictional force exerted on the block?
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a child stands with each foot on a different scale. the left scale reads 200 n and the right scale reads 250 n. what is her mass in kg? the acceleration due to gravity is 9.8 m/s2? group of answer choices 36 kg 350 kg 3430 kg 45.9 kg
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based on your observations of heat transfer through different states of matter, how would you create an efficient system of heat transfer?
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at an amusement park there is a ride in which cylindrically shaped chambers spin around a central axis. people sit in seats facing the axis, their backs against the outer wall. at one instant the outer wall moves at a speed of 3.13 m/s, and an 83.6 kg person feels a 578 n force pressing against his back. what is the radius of a chamber
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outlets on a household circuit are arranged in select one: a. a combination of series and parallel. b. not given c. parallel. d. neither series or parallel. e. series.
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Part A Reflect on how you use electricity at home. Think about times when you might be wasting energy. For example, leaving on appliances, such as lights, wastes energy if you're not using them. Come up with a tip to address the problem you've identified.
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a 100 cm diameter propeller blade, similar to the blade in example 4.15, is attached to a motor spinning at a constant rate. what is true about the radial (centripetal) acceleration and the tangential acceleration at the end of the blade?
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5. Block A, of mass M, is suspended from a light string that passes over a pulley and isconnected to block B of mass 2M. Block B sits on the surface of a rough table with acoefficient of kinetic friction k. When the system of two blocks is released from rest,block A accelerates downward with a constant acceleration and block B moves to theright. The moment of inertia of the pulley is I = 1.5 MR. Present all results in terms ofM, g, and R.a. Find the linear acceleration of the system.b. Find the tension force in the vertical section of the string.c. Find the tension force in the horizontal section of the string.d. Find the minimum value of s, such that the blocks will not move.
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how does the plot differ from the plots for tube radius, viscosity, and tube length? how well did the results compare with your prediction
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A contractor is pushing a stove across a kitchen floor with a constant velocity of 18 cm/s [fwd]. The contractor is exerting a constant horizontal force of 85 N [fwd]. The force of gravity on the stove is 447 N [down].Determine the normal force (FN ) and the force of friction (Ff ) acting on the stove. Determine the total force applied by the floor (Ffloor) on the stove.
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Consider a two step Stern-Gerlach experiment, where our quantization axis is z and you apply the magnetic field along this axis; hence, you split the beam of spin-half particles (e.g., electrons) into two, i.e., Sz =1, . A Now select only the beam of particles and let it pass through another Stern-Gerlach analyzer with the magnetic field along x direction and measure the spin along the x axis. What values of the spin will you find and what probabilities will be associated with those values? B If the same electron after the Se measurement is sent back to the the Stern-Gerlach analyzer measuring the Sz what would they find? (Note this means that the electron has passed through three Stern-Gerlach analyzers)
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what size of resistor is necessary between a 12 volt dc battery in order not to cause the battery to burn?
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an object floating in a container of water and partially submerged has the same density as the water. question 2 options: true false
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a curve in a road forms part of a horizontal circle. as a car goes around it at constant speed 14.0 m/s, the horizontal total force on the driver has magnitude 149 n. what is the total horizontal force on the driver if the speed on the same curve is 23.9 m/s instead
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a force f applied to an object of mass m1 produces an acceleration of 7.36 m/s2. the same force applied to a second object of mass m2 produces an acceleration of 2.62 m/s2. what is the value of the ratio m1/m2?
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Satellite A is thrown at 8 km/s. Satellite B is thrown 15 km/s. Describe below the difference in satellite A and satellite Bs motions.
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how much water should be taken up by a plant when the air around it is completely saturated with water - 100 percent humidity.
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a train with a monochromatic headlight is approaching you at a speed of 1 18 c. if a student on the train measures the wavelength of the light to be 590 nm, what do you measure the wavelength (in nm) to be? nm
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Need help with this (Homework)
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There are many ways to reduce the amount of waste that we produce. Which of the following is not a reduction or minimization strategy?a)purchasing items that are reusableb)reduced packagingc)buying individually packaged items, not in bulk containerd)recyclinge)reducing the amount that a consumer purchases
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help meWrite your answer on the lines below. 4. Are the light waves reflecting off a red stop sign longer or shorter than the waves reflecting off a violet-colored jacket? Explain how you know.
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newtons first law can be applied to a. static equilibrium. b. inertial equilibrium. c. dynamic equilibrium. d. both a and b. e. both a and c.
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consider a hypothetical planet with a radius of 162 million meters and a mass of 1027 kg. what is the density of this planet, in kg/m3? round to the nearest integer.
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