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A cart moving horizontally along a straight line with constant speed of 30 m/s. A projectile is fired from the moving cart in such a way that it will return to the cart has moved 80 m. At what speed (relative to the cart) and at what angle (to the horizontal) must the projectile be fired?
A long cylindrical tube of length L, and density ?t, is very slightly weighted on one end so that it floats upright in a fluid having density, determine the period of the oscillation in terms of L, t, and f
q1. two ocean liners each with a mass of 38000 metric tons are moving on parallel courses 92 m apart. what is the
The space shuttle makes 1 revolution around the Earth in 1.5 hours when it is in an orbit 200 km above the Earth's surface. what is the radius of the new orbit
A solid cylindrical disk has a radius of 0.20 m. It is mounted to an axle that is perpendicularto the circular end of the disk at its center. When a 30 N force is applied tangentially to the disk, perpendicular to the radius, the disk acquires an ..
A 4.0mW laser beam has its electric field vertical. what's the power of the transmitted beam
The density of water in Earth's hydrosphere and the density of rocks in the crust are both lower than the average density of the planet as a whole
A 60 lb sphere A of radius 5.0 inches is moving with a velocity of 5 ft/s to the right along a flat, frictionless surface. find the velocity of each sphere immediately after impact
A grasshopper jump 1.00 meter from rest, with an initialvelocity at a 45 degree angle with respect to the horizontal. Find the initial speed of the grass hopper
q1. two crates of mass 57 and 164 are in contact and at rest on a horizontal surface. a 650 force is exerted on the
a surveyor 100 m from a long straight 200 kv dc power line suspects that its magnetic field may equal that of the earth
A proton source provides protons of various speeds. Protons of a particular speed follow the dotted line through the speed selector. The speed selector has an electric field of 3100 V/m and a magnetic field of 0.35T. The protons that the speed sel..
Suppose that you have two identical capacitors and a single resistor. If you make an RC circuit with one capacitor, What is the time constant for this circuit
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