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A spacecraft is on a journey to the moon. At what point, asmeasured from the center of the earth, does the gravitational forceexerted on the spacecraft by the earth balance that exerted by themoon? This point lies on a line between the centers of the earthand the moon. The distance between the earth and the moon is 3.85× 108 m, and the mass of the earth is 81.4 times as great asthat of the moon.
The angle between the electric field vector and the vector normal to the rectangular plane is 65.0 degrees. Illustrate what is the electric flux through the rectangle?
question1a certain elevator cab in a new york hotel has a total run of 178 m. its greatest speed is 251 mmin. its
What are the strength and direction of the electric field at the position indicated by the dot in the figure below, in which q = 3 nC, d = 11 cm, and the positive x-axis points to the right?
A box is dropped from the height of 2000 m. Find the time taken by the box to reach the ground
In a local bar, a customer slides an empty beer mug down the counter for a refill. The height of the counter is 1.20 m. The mug slides off the counter and strikes the floor 0.60 m from the base of the counter.
An ideal gas, Cp = (7/2)R, is heated in a steady-flow heat exchanger from 70°C to 190°C by another stream of the same ideal gas which enters at 320°C. The flow rates of the two streams are the same, and heat losses from the exchanger are negligibl..
A ferry can travel at an optimal speed of 8 km/h in stillwater measured relative to the shore. What is the optimal speed of the ferry, relative to the shore, if it moves perpendicular to a 6km/h current?
A rifle is aimed horizontally at a target 51m away. The bullet hits the target 2.0cm below the aim point. What was the bullet's speed as it left the barrel
The Venturi tube shown in the figure below may be used as a fluid flowmeter. Find the speed of the gasoline as it leaves the hose
The current supplied by a battery in a portable device is typically 0.131 A. Find the number of electrons passing through the device
A student is reading a lecture written on a blackboard. The lenses in her eyes have a refractive power of 54.56 diopters, How far is the blackboard from her eyes
two loudspeakers placed 6.0 m apart are driven in phase by an audio oscillator, whose frequency range is 1350 Hz to 1826 Hz. What is the frequency produced by the oscillator
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