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A capacitor with air between its plates is charged to 70 V and then disconnected from the battery. When a piece of glass is placed between the plates, the voltage across the capacitor drops to 50 V. What is the dielectric constant of this glass?
An electric vehicle starts from rest and accelerates at a rate of 2 m/s2 in a straight line until it reaches a speed of 25.00 m/s. The vehicle then slows at a constant rate of 1.1 m/s2 until it stops. (1) How much time elapses from start to stop? ..
A jet plane lands with a speed of 98 m/s and can accelerate at a maximum rate of 5.90 m/s2 as it comes to rest. (a) From the instant the plane touches the runway.
How long after being thrown will the balls collide
A proton starting from rest is accelerated in a cyclotron to a speed of 3.0•106 m/s. Find the work done on a proton by the electrical force of the cyclotron.
How much heat must be removed from 0.40 kg of water at 0 degrees C to make ice cubes at 0 degrees C?
A stone is dropped into a river from a bridge 43.90 m above the water. Another stone is thrown vertically down 1.00 after the first is dropped. The stones strike the water at the same time.
What is the horizontal distance the airplane engine falls. find out the time that was recorded on Earth.
a support cable runs from the top of the boom to the tractor. The angle between the support cable and the horizontal is 32°, and the angle between the boom and the horizontal is 48°.
What is the velocity of q_{2} when the balls are 0.450 m apart. what is the speed that the bar falls.
A system consisting of an ideal gas at the constant pressure of 120kPa gains 800J of heat a)Find the change in volume of the system if the internal energy of the gas increases by 480J b)Find the change in volume of the system if the internal energ..
Plot the position, velocity, and acceleration of the plane throughout this time interval as a function of time, using initial position of the plane as the origin.
How fast must the car be travelling just as it leaves the cliff in order to clear the river and land safely on the opposite side.
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