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How much weaker (or stronger) is the force of gravity acting upon a typical person at the surface of the Earth relative to the force of gravity acting upon M31 as it is pulled towards the Milky Way? [Recall that the mass and radius of the Earth are MEarth = 6 × 1024 kg and REarth = 6400 km, while M31 ∼ 4 × 1042 kg and MMW ∼ 2 × 1042 kg, with the two galaxies separated by roughly 2 × 1019 km. A typical person has a mass of 60 kg.]
A sinusoidal electromagnetic wave having a magnetic field of amplitude 1.30?T and a wavelength of 434nm is traveling in the +xdirection, What is the amplitude of the associated electric field
A 6.0 kg bowling ball traveling 13 m/s collides head-on with a 3.0 kg hunk of putty initially at rest. Assuming a completely inelastic collision (the putty sticks to the bowling ball) what is the speed of the ball just after the collision?
Compare these estimators in terms of the optimal properties, unbiasedness, full efficiency and consistency.
In the annual battle of the dorms, students gather on the roofs of Jackson and Walton dorms to launch water balloons at each other with slingshots, Find the direction of the balloon's inital velocity
When is building retrofitting a must? Choose a location on Earth and explain why building retrofitting may be the best way to go, what are the alternatives if retrofitting is not possible.
A rock of 350 kg is found at the top of a mountain that is 1250-m high. Find the potential energy with respect to the bottom of the mountain (g = 9.8 m/s2)
Compute the number of electrons in a small, electrically neutral silver pin that has a mass of 12.0 g. Silver has 47 electrons per atom, and its molar mass is 107.87 g/mol.? Imagine adding electrons to the pin until the negative charge has the very l..
Calculate the fluid force (in Newtons) on a square plate with aside of 2 m that is submerged at ahorizontal angle of 30°. Assumethat the top edge of the plate is located at the surface of the water.
question1a wooden rod of insignificant mass and length 83.0 is pivoted about a horizontal axis through its center. a
A typical depth for the human mouth is about 7.80 cm , although this number can vary. (Check it against your own mouth.). We can model the mouth as an organ pipe that is open at the back of the throat. What are the wavelengths of the first four ha..
The density of water is 1000 kg/m3. A block of wood ofuniform density floats so that exactly 3/4 of its volume isunderwater. What is the density of the block
What are the primary functions of the respiratory system? Explain the roles of mucus and cilia in the respiratory system.
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