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Q1. A weight of 1200 N rests on a lever at a point 0.50 m from a support. On the same side of the support, at a distance of 3.0 m from it, an upward force with magnitude F is applied. Neglect the weight of the board itself. If the system is in equilibrium, what is F?
Q2. A 35.0 g bullet moving at 475 m/s strikes a 2.5 kg bag of flour that is on ice, at rest. The bullet passes thru the bag and exits at 275 m/s. How fast is the bag moving when the bullet exits?
Q3. A 120 granite cube slides down a 45 frictionless ramp. At the bottom, just as it exits onto a horizontal table, it collides with a 210 steel cube at rest.
A pitcher throws a baseball at 41.0 m/s. If the ball thrown horizontally at this speed, explain how much will it drop by the time it reaches the catcher who is 17.0 m away from the point of release?
Electrons in a photoelectric effect experiment emerge from an aluminum surface with a max kinetic energy of 1.30 eV. What is the wavelength of the light
Three fire hoses are connected to a fire hydrant. Each hose has a radius of 0.023 m. Find the water speed in each hose
In vacuum, two charged particles lie 2.5 cm apart. Find the magnitude and direction of the electric field at a point midway between the two particles. (One has a charge of -8.0 µC and the other has a charge of +4.0 µC.) Magnitude.
The drive motor is shifted to turn the carousel at a higher constant rate of rotation, Calculate the coefficient of static friction between the bag and the carousel
Carol and robin share a house. to get to work carol walks north 1.5 km while robin drive west 7.5 km. How far part are their work place
At what distance from the wire would the magnitude of the magnetic field equal to the strength of the Earth's magnetic field of 5.0 x 10^-5 T?
An X-ray beam of wavelength 0.01nm strikes a target containing free electrons. determine The change in wavelength of the scattered x-ray
The escape velocity of a bullet from the surface of planet Y is 1951 m/s. Calculate the escape velocity from the surface of planet X
A gardener pushes a box of tools across a driveway by applying a 20.5- N force that pushes downward at an angle of 34.9 o with respect to the horizontal
A 3.0 cm tall statue is 48 cm in front of a biconvex lens (focal length 20 cm), how high is the image
A dockworker applies a constant horizontal force of 84.0\({\rm N}\) to a block of ice on a smooth horizontal floor. The frictional force is negligible. The block starts from rest and moves a distance 12.5\({\rm m}\) in a time 4.80\({\rm s}\)
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