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A moon orbits a planet of unknown mass with a period of 1.8 days. If the radius of the moon's orbit is 420,000,000 m, determine the mass of the planet.
(a) First, determine the speed of the moon.
(b) Find the centripetal acceleration of the moon. (This is also the acceleration of gravity due to the planet)
(c) Compute the mass of the planet.
An electromagnetic wave in a vacuum has a magnetic field with a magnitude of 1.27 × 10-6 T. What is the intensity S of the wave
A wire runs through a 0.7 T magnetic field as shown. The dashed lines represent the magnetic field, and the solid black line the wire. What is the magnitude of the current through the wire
two racing boats set out from the same dock and speed away at the same constant speed of 86.0 kmh for half an hour
A horizontal spring is lying on a frictionless surface. One end of the spring is attached to a wall while the other end is connected to a movable object. Determine the speed of the object at the instant when the spring is stretched by 0.049 meter r..
A flat screen is located 0.70 m away from a single slit. Light with a wavelength of 557 nm (in vacuum) shines during the slit and produces a diffraction pattern. The width of the central bright fringe on the screen is 0.043 m. What is the width of th..
A simple harmonic oscillator has an amplitude of 5cm, a spring constant of 5.0N/m, and a maximum speed of 10 m/s. What is the speed when it reaches half of the amplitude
A crane drops a 1.0 kg steel ball onto a steel plate. The balls speed just before impact is 2.0m/s. what is the bounce back speed right after the impact
The tungsten filament in the 36 ohm bulb is 8 mm long and has a cross-sectional area of 2e-10 m^2. What is the magnitude of the electric field inside this metal filament?
Suppose that a person singing in the shower is producing1.34 mW of sound power. Some of the soundis reflected from the floor and ceiling. The intensity of this reflected sound at a distance of 3.01 mfrom the source is 4.40 10-6 W/m2.
Two moons of identical mass are 2000 kilometer apart. If superman pushes one moon away to make the distance 6000 kilometer, Compute the gravitational force between the moons
A block is pushed across a rough horizontal surface from point A to point B by a force (magnitude P = 5.4 Newton) at an undisclosed angle from the left side. find how much work is done on the block by the force P between A and B
What is the total translational kinetic energy in a test chamber filled with nitrogen (N2) at 2.03×105 Pa and 20.7°C? The dimensions of the chamber are 3.00 m × 6.00 m × 8.30 m
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