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Two point particles with charges q1 and q2 are separated by a distance L as shown in the figure below. The electric potential is zero at point A, which is a distance L/4 from q1. What is the ratio q1/q2?
your refrigerator has a mass of 124.7 kg including the food in it. it is standing in the middle of your kitchen and you
Two steel juggling balls each carry a charge of 2.75 ?C. find the distance between the centers of the two balls
question a cell with .25 m internal concentration is placed into pure water. what is the pressure difference across the
A 20.0g rubber bullet hits a wall with a speed of 160m/s . If the bullet bounces straight back with a speed of 130m/s , what is the magnitude of the change in momentum of the bullet?
A rectangular plate has a length of (20.4 0.2) cm and a width of (8.7 0.1) cm. Calculate the area of the plate
A sled and rider, gliding over horizontal, frictionless ice at 4.5 , have a combined mass of 72. What impulse was delivered to the sled by the friction force from the rough spot
A 1.4-kg playground ball is moving with a velocity of 3.0 m/s directed 30° below the horizontal just before it strikes a horizontal surface. compute the magnitude of the average resultant force on the ball
The top layer of your goose down sleeping bag has a thickness of 5.4cm and a surface area of 1.0 m^2. What is the thermal conductivity of the goose down
Seat belts and air bags save lives by reducing the forces exerted on the driver, A 58kg person is in a head-on collision. The car's speed at impact is 13m/s. Estimate the net force on the person if he or she is wearing a seat belt and if the air ..
A tsunami travelling across deep water can have the speed of 750 {rm km/h} and a wavelength of 360 km. what is the frequency.
What is an initial velocity of the boulders
At 230° C, the saturation pressure of ethane is 10.6 bar. Calculate the densities of the liquid and vapor phases using the Peng-Robinson equation. Compare to the reported values for the liquid and vapor densities of 0.468 and 0.0193 g..
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