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Two balls are projected simultaneously with the same speed from the top of the tower , one vertically upwards and the other vertically downwards. they reach the ground in 9sec and 4sec respectively. Calculate the height of the tower.
A small, 10.0 g insect stand at one end of a thin uniform metal rod which is initially at rest on a frictionless horizontal table. What is the resulting angular speed of the rod
A 2.35kg ball moving at 4.20 m/s to the right hits a 3.45kg ball head on that is travelling at 3.50 m/s to the left. What is the velocity of the first ball after the perfectly elastic collision
The primary winding of an electric train transformer has 400 turns and the secondary has 50. If the input voltage is 120V(rms), what is the output voltage
A 0.20 kg billiard ball is thrown at a 45 degree angle upwards from the edge of a 12.192 meters tall building. What was the speed of the ball when it was launched
two loudspeakers 5.0 m apart and facing each other play identical sounds of the same frequency. you stand halfway
An initially uncharged 3.31-?F capacitor and a 8.11-k? resistor are connected in series to a 1.50-V battery that has negligible internal resistance. Calculate the circuit\'s time constant in milliseconds
Three equal blocks connected by ideal strings are being pulled along a horizontal frictionless surface by a horizontal force, F. Determine what is the tension TAB in the string between block A and block B
A 60-N toolbox is dragged horizontally at constant speed by a rope making an angle of 35° with the floor. Determine the magnitude of the normal force
A quarterback throws a football straight toward a receiver with an initial speed of 16.0 m/s, at an angle of 31.5° above the horizontal. With what constant speed should the receiver run
A certain molecule is made up of four atoms. Three of themhave mass M and are located at the vertices of an equilateraltriangle of side a. The fourth atom has mass m and is free to movealong a line perpendicular to the triangle and passing through..
A speaker has a diameter of 0.35 meter. Assuming that the speed of sound is 343 m/s, determine the diffraction angle θ for a 2.0-kHz tone
On a spacecraft, two engines are turned on for 658 s at a moment when the velocity of the craft has x and y components of velocity v0x = 4115 m/s and v0y =5135 m/s, Find the x and ycomponents of the craft's acceleration
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