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Q1. A 0.27 kg rock is thrown perpendicularly upward from the top of the cliff that is 32 m high. When it hits the ground at the base of cliff, the rock has a speed of 29 m/s. suppose that air resistance can be ignored, find out A) initial speed of the rock and B) greatest height of the rock as measured from the base of cliff.
Q2. An 18 kg loudspeaker is suspended 2.7 m below ceiling by two cables that are each 70 degrees from vertical. What is the tension in cables?
What is current in the coil
Imagine a "free" electron and a "free" proton held midway between the plates of a charged equivalent plate capacitor. When released, how do their accelerations and directions travel compare.
What is the terminal speed for a 76.0 skier going down a 41.0 snow-covered slope on wooden skis = 0.070? Suppose that the skier is 1.80 m tall and 0.500 m wide. Replace mg with net forces parallel to the incline.
The squadron commander has the mandate that the database update should be complete in less than one minute. If the topo database is 20 GB, and link is SONET, what is the minimum standard rate necessary.
The parallel metal plate of a capacitor is detached by a distance of 0.5cm and is connected to a 90v battery. Find the electric field between them and surface charge density on the plate.
Problem on the velocity of boat
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.
If the beam now strikes the top of a building standing directly at the water's edge, find out the height of the building.
Determine the magnitude when the force on the wire
What is magnitude of the Coulomb force
Two charges are placed on the x axis. One of the charges (q1 = +6.95C) is at x1 = +3.00 cm and the other (q2 = -27.3C) is at x2 = +9.00 cm. Find out the net electric field (magnitude and direction given as a plus or minus sign) at (a) x = 0 cm and (b..
What is momentum of the block
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