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A brick of mass 1.21 kg is attached to a thin (massless) cable and whirled around in a circle in a vertical plane. The circle has a radius of 1.38 meters. The cable will break if the tension exceeds 49.0 Newtons. What is the maximum speed the brick can have at the bottom of the circle before the cable will break?
Compute the value of Ra in terms of R1 and R2. how much energy must be added to a 2-kilogram pile of it to increase its temperature from 40*c to 50*c.
A light train is travelling on a straight section of track at a constant speed of 15 rm m/s. As it approaches next station, it starts to slow down at a rate of 5 rm m/s^2 until it stops at the station.
An object is located 8.00 cm from a converging lens that has a focal length of 10.0 cm. The height of the object is 0.41 cm. What is the height hi of the image
To balance a very light rod when a down force is applied at a point 0.77m to the left of a supporting fulcrum (pivot point), What is the magnitude of the downward force
A 89.0 kg skydiver hanging from a parachute bounces up and down with a period of 1.50 s. What is the new period of oscillation when a second skydiver
A 10cm diameter circular wire loop carries a current of 2.4A, Find the torque on the loop in a 1.2T magnetic field directed perpendicular to the loop
At a distance r away from a point charge q the electric potential V = 500.0 V and the electric field has a magnitude of 220.0 N/C
What is the diameter of an air-filled coil with a 44 mH inductance, if it has 290 turns and the length of the coil is 76 cm
A standard violin string is 32.8 cm long from the tuning peg to the bridge. When played open(without pressing a finger against the fingerboard), What is the speed of the wave on the string
Two small metallic spheres, each of mass 0.20g, are suspended as pendulums by light strings from a common point.
Waterslides are nearly frictionless, hence can provide bored students with high-speed thrills. If Kevin is clocked at 25 m/s at the bottom of the slide, find the work done on him by friction
A dock worker applies a stable horizontal force of 79.0 {rm N} to a block of ice on a smooth horizontal floor. The frictional force is negligible. The block starts from rest and moves 14.0 {rm m} in the first 6.00 {rm s}.What is the mass of the bl..
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