Physics

if the force of friction opposing the motion is 18 n, what force f (in n) is the person exerting on the mower? (enter the magnitude.)
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what are the two limiting cruising altitudes usable on v343 for a vfr-on-top flight from dbs vortac to raney intersection?
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Three masses are connected by ropes over frictionless pulleys. The masses are known, m1 = 10.2 kg, m2 = 3.1 kg, and m3 = 4.8 kg. Determine the acceleration of m1 if s = 0.38 and k = 0.26.
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The following figures show the spectral types of four main-sequence stars. Rank them based on the time each takes, from longest to shortest, to go from a protostar to a main-sequence star during the formation process.Longest to shortest time:-M6-G2-A5-O9
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if a brown dwarf has a surface temperature of 1500 k, at what wavelength will it emit the most radiation?
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Is the spanish plant an example of sexual reproduction
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a uniform solid sphere rolls down an incline_ (a)What must be the incline angle if the linear acceleration of the center of the sphere is to have magnitude 0f 0.70g7 78,5217(b)if a frictionless block were to slide down the incline at that angle, would its acceleration magnitude be more less than; or equal to 0.70g? a. The acceleration magnitude would be equal to 0.70g_ b. The acceleration magnitude would be less than 0.70g. c. The acceleration magnitude would be more than 0.70g Be sure that you can explain why?
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a 2 kilogram mud ball drops from rest at a height of 18 m. if the impact between the ball and the ground lasts o.65 s, what is the magnitude of the aerage force exerted
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question 9: what is the total lifetime of the sun (up to the point when it becomes a whitedwarf and no longer supports fusion)?
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the electric field 0.300 m from a very long uniform line of charge is 850 n/c . part a how much charge is contained in a section of the line of length 1.70 cm ? express your answer in coulombs.
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A man can swim still with a velocity of 4 m\s.He crosses a river directly perpendicular to the river when he heads 30 with the normal to the riverbank. What is the velocity of the river?
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if you do not wear your required glasses or corrective lenses while driving and are stopped by police, you:
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a tow rope is being used to tow 10 skiers up a ski hill at a constant speed. the average mass of the skiers is 66.0 kg. the hill is inclined at 8.5 degrees. the power output of the motor is 4.70 kw. with what maximum speed can the skiers be towed? assume that there is negligible friction.
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if a 3 solar mass star and a 10 solar mass star formed together in a binary system, which star would evolve off the main sequence first?
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gunther is trying to push a 10 kg box. the coefficient of static friction between a 10 kg object and the floor is 0.50. what is the maximum force that can be applied on the object before it starts moving?
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if you hold a 1.85 kg k g package by a light vertical string, what will be the tension in this string when the elevator accelerates as in the previous part?
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Why do you think the pylon in Figure 24 is designed the way it is, and not in the way shown in Figure 25?
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what is the second law of thermodynamics and why does it effect the efficiency of energy conversion?
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consider a meterstick supported at the center, and a block of 25n is hung at the 70cm mark. the system is balanced when another block is hung at 20cm. what is the wight of the second block
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From these measurements, compute the possible error in the volume.
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the tilt of the moon's orbit shifts a little bit each year, which changes the dates eclipses occur each year. this shift of the orbital plane is called
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multiple choice question by a system when it moves an object over a distance. multiple choice question. heat is gained energy is gained work is done energy is destroyed'
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the radius of uranius is 7.0 x 10^-3 pm and has a mass of 235 amu. calculate the density of the nucclues in g/cm^3
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The driver of a car with a total of 1800 kg mass is traveling at 23 m/s when he slams on the brakes, locking the wheels on the dry pavement. The coefficient of kinetic friction between rubber and dry concrete is typically 0.7. How far would the car travel if were going twice as fast
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