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The area of the large piston in a hydraulic jack is 25.5 cm2. The area of the small piston is 12 cm2.
Determine what force must be applied to the small piston if a weight of 800newton is to be lifted?
a proton is placed 4.65 mm from an infinitely long line of charge. the proton is observed to experience an acceleration
A car drives straight off the edge of a cliffthat is 54 m high. How fast was the car traveling when it went over the cliff
A uniformly charged rod of length L and total charge Q lies along the x axis as shown in Figure P23.36. (a) Find the components of the electric field at the point P on the y axis a distance d from the origin. (b) What are the approximate values of th..
A 117 V potential difference isapplied to a space heater that dissipates 500 W during operation. What is its resistance during operation
In a house the temperature at the surface of a window is 23°C. The temperature outside at the window surface is 4°C. What is the temperature at the outside window surface
A train travels due south at 60 m/s. It reverses its direction and travels due north at 60 m/s. What is the change in velocity of the train
Two point charges Q1 = +4.55 nC and Q2 = ?1.65 nC are separated by 50.0 cm. (a) What is the electric potential at a point midway between the charges? (b) What is the potential energy of the pair of charges? What is the significance of the algebrai..
A 0.30 kg mass is suspended on a string. In equilibrium the mass stretches the spring 2.0 cm downward. Calculate the total energy of the system
A thin circular sheet of glass of diameter 3 meters is rubbed with a cloth on one surface and becomes charged uniformly. find the total excess charge on the surface of the glass disk
Displacement is which of the following types of quantities.
The armature windings of a dc motor have a resistance of7.5? . The motor is connected to a 120-V line, What will be the current in the motor
A projectile is fired horizontally from a gun that is 48.0 m above flat ground, emerging from the gun with a speed of 280 m/s. How long does the projectile remain in the air
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