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Problem: A ball launched from ground level lands 2 s later on a level field 30 m away from the launch point.
Part A: Find the magnitude of the initial velocity vector and the angle it is above the horizontal. (Ignore any effects due to air resistance.)
I need help to find the magnitude of the initial velocity vector.
A very light spring of equilibrium length 10.0 cm is hung from the ceiling with a 0.40 kg block at its end. When the block settles, the spring is 15.0 cm long. The same block-and-spring system is then set up horizontally on the floor, with the fr..
q1. a long hollow cylindrical conductor inner radius 2.0 mm outer radius 4.0 mm carries a current of 13 a distributed
A 150g copper bowl contains 220 g of water, both at 20.0degrees C. A very hot 300g copper cylinder is dropped intothe water, What is the original temperature of the cylinder
One mole of oxygen gas is at a pressure of 5.40 atm and a temperature of 29.0°C. (a) If the gas is heated at constant volume until the pressure triples, what is the final temperature? °C (b) If the gas is heated so that both the pressure and volume a..
A 0.120-kg, 50.0-cm-long uniform bar has a small 0.055-kg mass glued to its left end and a small 0.110-kg mass glued to the other end. How far from the left end should the fulcrum be placed
Consider the reaction 4He + 40Ca -> 3H + 21Sc Find the minimum laboratory kinetic energy for the 4He projectile if 40Ca is stationary
A pilot is flying an airplane that is used for aeriel surverying to make a map of ground detail of New Jersey. If the scale of the map is to be 1:50,000 and the camera has focal length of 6in
a motor starts from rest with an angular acceleration of 12. rad/s ^2 what is the motor angular speed 4.0s later? how many revolutions does it make in this period of time
A long cylindrical conductor is placed in an initially (i.e., before the cylinder is present)uniform electric field which is perpendicular to the axis of the cylinder. Find the electrical potential outside of the cylinder
The windpipe of a typical whooping crane is about 4.7 feet long. Determine what is the lowest resonant frequency of this pipe
if the incident light is unpolarized about what percentage 0 to 100 of the light intensity gets through a plane
The surface of the drum of a laser printer is negatively charged, except in certain "print black" regions, such as letterforms, thathave been discharged by a laser beam. Negatively charged inkparticles carrying a charge of 5.0 mC cling to the "pri..
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