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A 35.0 kg person crawls across a 15.0 m long horizontal beam that has a mass of 15.0 kg. The beam has a support line that is at an angle of 65 degrees up from the horizontal. If the support line can hold a maximum of 455 N, how far can the person move across the beam before the line breaks? ( Assume that the center of mass is at the middle of the beam)
Your friend's car is broken and you volunteer to push it to the nearest repair shop which is 2.0 km away. what is the normal force between the two bumpers
how far will the bullet penetrate the block of wood.
A series ac circuit contains a 350 ohm resistor, a 17.0 mH inductor, a 3.10 uF capacitor, Find the average power delivered to the entire circuit
In a photoelectric experiment, light with a wavelength of 250 nm hits a certain material. When a negative potential of 0.48 volt is applied there is no more current while a saturation current Is is recorded at positive voltages.
A rotating fan completes 1200 revolutions every minute.Consider a point at the tip of the blade. at a radius of0.15m. Through what distance does the point move in onerevolution
The threshold of dark-adapted (scotopic) vision is 8.0 ? 10-11 W/m2 at a central wavelength of 450 nm. how many photons per second enter the eye
The displacement vectors 46.0 cm at 15.0° and 23.0 cm at 53.0° both start from the origin and form two sides of a parallelogram. Find the area of the parallelogram
A nuclear power plant generates 3000 MW of energy from nuclear reactions in reactor's core. What is the plant's actual efficiency
A roller coaster goes 26 m along a section of track sloping 10 degrees below the horizontal, followed by a 15-m section sloping upward at 6 degrees, followed by an 18-m section of level track. Find the net displacement.
A human hair is placed directly in front of the opening of a laser pointer. The light has a wavelength of 647.8 nm. Determine the approximate thickness of the hair
q1. in a skating stunt called as cracking-the-whip a number of skaters hold hands and form a straight line. they try to
A 5 litters cylinder contains oxygen at 20 C, and 101 kpa. if the temperature increases by 15 C, what is the final temperature of the gas?
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