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Question1
Two boys are pulling a car of mass 800 kg along a level surface with a pair of ropes attached horizontally. While the pull on each rope is 400N in the directions indicated, acceleration of the car is 0.1ms-2. What is the size of the frictional force acting on the car in above situation?
Question2
A 105 ball is tied to a string. It is pulled to an angle of 8.00 and free to swing as a pendulum. A student with a stopwatch finds that 11 oscillations take 18.5.How long is the string?
Question3
An astronaut's normal weight it 600 Newton's. How much will she weigh while orbiting in a satellite at 12,000 kilometres [two earth radii] above the surface of Earth?
An object is 22 cm in front of a diverging lens that has a focal length of -13 cm. How long in front of the lens should the object be placed so that size of its image is reduced by a factor of 4.
An underwater diver sees the sun 46 degrees above horizontal. How high is the sun above the horizon to a fisherman
An electron enters a region of space containing a uniform 0.0000227-T magnetic field. Its speed is 115 m/s, Find the radius r of the electron\'s path, and the frequency f of the motion
A string is58.0cm long and has a mass of 3.00 g. A wave travels at5.25m/s along this string. A second string has the same length, butone-fourththe mass of the first. If the two strings are under the same tension, what is the speed of a wave along ..
A large cruise ship of mass 6.70 107 kg has a speed of 13.0 m/s at some instant. How much work is required to stop it
The force component along the displacement varies with the magnitude of the displacement, Find the work done by the force in the interval
In a series circuit, a generator (1384 Hz, 14.4 V) is connected to a 17.1-? resistor, a 3.69-µF capacitor, and a 5.72-mH inductor. Find the voltage across each circuit element
A girl rides an escalator that moves her upward at a constant speed. As the girl rises, how do her gravitational energy and kinetic energy change.
A 12-inch cast iron water pipe that has been in service for 50 years is found to have extensive corrosion inside. How these conditions would affect friction losses in the pipe describe it.
The largest moon of Pluto, Charon, was discovered in 1979. Charon is in a circular orbit of radius 19,600 km around Pluto, What is the total mass of the Pluto-Charon system
Two waves are described by the following wave functions y1(x,t) = 3.50 sin (2.00x ? 10.0t) y2(x,t) = 12.00 cos (2.00x ? 10.0t) , find the amplitude and phase of this sinusoidal wave
A 8 m x 11 m swimming pool slopes linearly from a 1 m depth at one end to a 3.8 m depth at the other. What is the mass of water.
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