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The hydraulic lift in a service station is capable of raising cars with a mass up to 2000kg. If this is accomplished with a 20.0cm diameter lifting piston, calculate the diameter of the driving piston if the lifting is to be accomplished with a force not to exceed 100N.
In order to find the density of an unknown material Susan measured the mass of a cube made out of this material and the length of its side
A transformer consists of 300 primary windings and 832 secondary windings. 1. If the potential difference across the primary coil is 22.5 V , what is the voltage across the secondary coil? 2. If the potential difference across the primary coil is 22...
A 2.40g bullet embeds itself in a 1.50kg block, which is attached to a spring of force constant 770 N/m. Find the time for the bullet-block system to come to rest
An infinite plane current sheet coincides with the xy plane. The surface current density is K'=K' y-hat where K'=const, Find the force per unit length on the wire
A new plant oil is discovered that is easy to recover from the plant and it might be a useful fuel. A question is the energy density of the fuel. Calculate the energy-density of this "new fuel"
The wire is cut at point P. Will the potential difference between points A and B increase, decrease, or remain the same? Give reason for.
A 75 human sprinter can accelerate from rest to 10 in 3.5 . During the same interval, a 34 greyhound can accelerate from rest to 17, evaluate the average power output for each
A 450 N ladder rests against a smooth wall, What is the friction force on the ladder at its base
A 56.6-g ice cube is initially at 0.0°C, Find the change in entropy of the cube after it melts completely at 0.0°C
You are given a sample of metal and asked to determine its specific heat. You weigh the sample and find that its weight is 28.9N. What is the sample's specific heat
An object is moving along a straight line and the uncertainty in its position is 1.5 m. Find the minimum uncertainty in the momentum of the object
A car with a mass of 2400 kg is traveling at a speed of 40.0 km/h on an icy road when it collides with a 10000 kg truck which was traveling toward the car with the speed of 18 km/h. Find the change in the kinetic energy of the system
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