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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.]
An object is 0.9 m away from a particular lens. The lens produces an image of that object 30 cm on the other side of the lens. Is this lens converging or diverging? Find the focal length of this lens.
a horizontal rifle is fired at a bulls-eye. the muzzle speed of the bullet is 670 ms. the gun is pointed directly at
A uniform ladder 7.34m long weighing 410N rests with one end on the ground and the other end against a perfectly smooth vertical wall. What force does the wall exert on the ladder
Examine and completely illustrate an experiment to determine the force acting on a charge because of the combination of forces
A 12 kg box slides 4.0 {rm m} down the frictionless ramp, and then collides with a spring whose spring constant is 240 N/m.
Calculate the acceleration of a 1400-kg car that stops from 39 km/h "on a dime" (on a distance of 1.7 cm). Determine the acceleration of the car. How many g's is the magnitude of the acceleration of the car?
The spin cycles of a washing machine have two angular speeds, 409rev/min and 608rev/min . The internal diameter of the drum is 0.610m. Find the laundry's maximum tangential speed
an asteroid has a mass of 3.66 x 1020 kg and a radius of 8.2 x 105 m. if a 25 kg mass is dropped from 10 m above the
A car with a mass of 1500kg moving at 40m/s comes to a stop in8 seconds. What is the change in momentum of the car
Assume blue light (λ = 500 nm) is used to decide the position of an electron to within the wavelength of the light. What will be the uncertainty in the electron’s velocity?
A hollow, conducting sphere with an outer radius of 0.254m and an inner radius of 0.199m has a uniform surface charge density of +6.18 × 106 C/m2. What is the new charge density on the outside of the sphere
An iron tower in is 552 feet tall on a cold day (T = -6.3 degrees Celsius). What is its final height (total) of the tower on a hot day when the temperature.
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