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Two spacecraft carrying identical pendulum gravity meters have landed on Mars, one at the equator and one at the North pole. Over a fixed period of time the pendulum at the equator is observed to oscillate 250 times compared with 251 times at the pole. Calculate the difference in the strength of gravity between the equator and the pole. Assuming Mars to be a spherically symmetric, rotating body, derive an expression for the difference in the strength of gravity at the Martian pole and equator due to the rotation of the planet and calculate its value. State what conclusions you draw when comparing the measured difference in gravity between the Martian equator and pole with the difference due to rotation.
Hakeem throws an 8.00 g ball straight down from a height of 2.0 m. The ball strikes the floor at a speed of 7.40 m/s. What was the initial speed of the ball? Assume that air resistance is negligible.
A convex mirror has a focal length of magnitude 7.63 cm. Find the magnification of the image.
The normal force equals the magnitude of the gravitational force as a roller coaster car crosses the top of a 59-m-diameter, What is the car's speed at the top
A singly charged ion of 7Li (an isotope of lithium) has a mass of 1.16×10?26kg. What is the radius of the ion's path in the magnetic field
Consider a mixed RLC circuit where an ideal capacitor of capacitance C = 60.0 ?F, What is the resonance frequency of this mixed RLC circuit
A child's toy consists of a piece of plastic attached to a spring in the figure below. The spring is compressed against the floor a distance of 2.00 cm, estimate the force constant of the spring
You have a concave lens whose focal length has an absolute value of 8 cm and several convex lenses with f=5.0 cm, 12 cm, 15 cm, and 20 cm. determine the focal length of the concave lens
question1drop solid sphere of aluminium into a bucket of water sitting on ground. the buoyant force equals weight of
A group of hikers hears an echo 1.50 s after shouting. If the temperature is 24.0°C, how far away is the mountain that reflected the sound wave
Calculate the terminal velocity for a pollen grain falling through the air using the drag force equation. Assume the pollen grain has a diameter of 7 µm and a density of 0.7 g/cm3
The isotope 88224Ra of radium has a decay constant of 1.19×10-6 per second. What is the half-life (in days) of this isotope
A quantity of heat is removed from a hot reservoir at absolute temperature T and then is added to a cold reservoir at absolute temperature T/2. The cold reservoir experiences an entropy increase S. What is the change in the entropy of the universe..
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