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A window washer is standing on a scaffold supported by a vertical rope at each end. the scaffold weighs 200N and is 3.21 m long. assume the 900N worker stands 1.44 m from one end of the scaffold. what is the force on the rope farther from the worker? answer in units of N.
You are driving down the road at 60 km/hr when you see a chicken dash out onto the road 23.3 m in front of you. What was your reaction time
A railroad car fo Mass M=2000kg and speed V0= 8.50m/s collides and couples to another car of equal mass and initially at rest. What is the final speed of the two couple railroad cars
In a Compton scattering experiment, an x-ray photon scatters through an angle of 18.0° from a free electron that is initially at rest. Calculate the angle through which the electron scatters
The largest fusion bomb ever detonated (called the Tsar Bomba) was tested by the Soviet Union in 1961. How many kilograms of matter were converted to energy
In a physics laboratory experiment, a coil with 210 turns enclosing an area of 13cm^2 is rotated from a position, What is the average emf induced in the coil
It is found experimentally that the electric field in a certainregion of Earth's atmosphere is directed vertically down. At analtitude of 260 m the field hasmagnitude 60.0 N/C. At an altitude of 190 m, the magnitude is 100 N/C.
2 positive charges each is 4 micro C located at the positions (0,0) and (20,0) and all coordinates are in cm, calculate the electric field due to the two charges
A piece of Nichrome wire has a radius of 5.2 x 10-4 m. It is used in a laboratory to make a heater that dissipates 3.50×102 W of power when connected to a voltage source of 100 V. Ignoring the effect of temperature on resistance, estimate the necessa..
A 0.70kg piece of lead at a temperature of 160C is dumped into 800mL of water at a temperature of 22C , How much heat flowed in this process
A particle travels around a circle of radius 2.0 m making one complete revolution every 2.0 m/s. What are the particle's tangential speed and its angular speed
A paperweight, when weighed in air, has a weight of W = 14.2 N. When completely immersed in water, however, it has a weight of Win water = 10.5 N. Find the volume of the paperweight.
What is the wavelength of the light in the glass
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