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An astronaut lands on a distant planet and wants to measure the planet's gravitational acceleration. She takes a 0.02-kg ball out of her pocket and attaches it to a 0.700-m string. She finds that this simple pendulum has a period two-thirds as large as the period she measured with the pendulum on Earth. What is the acceleration due to gravity on this planet?
You are designing the section of a roller coaster ride shown in the figure. Previous sections of the ride give the train a speed of 14.3 m/s at the top of the incline, which is 36.7 m above the ground. obtain the minimum radius you can use for the ..
What is the resistance of a lightbulb that uses an average power of 55.0 W when connected to a 60.0 Hz power source having a maximum voltage of 180 V
A 275 ball is tied to a string. It is pulled to an angle of 4 and released to swing as a pendulum. A student with a stopwatch finds that 17 oscillations take 20.
Analog voltmeter A has an equivalent resistance of 2.40 x 105 ? and a full-scale voltage of 50.0 V. What is its full-scale voltage
At the Winter Olympics, an athlete rides her luge down the track while a bell just above the wall of the chute rings continuously. Find the speed of the athlete
During a solar eclipse, the Moon, Earth, and Sun all lie on the same line, with the Moon between the Earth and the Sun. What force is exerted by the Sun on the Earth
Treating our rigid legged friend as a particle, what is the average force his feet exert on the ground when he slows down.
A special electronic sensor is embedded in the seat of a car that takes riders around a circular loop-the-loop ride at an amusement park. What is the speed of the rider at the top of the loop
Two parallel, uniformly charged, infinitely long wires carry opposite charges with a linear charge density ? = 3.83 ?C/m and are 5.69 cm apart. What is the magnitude of the electric field at a point midway between them and 54.3 cm above the plane con..
The radius of our Sun is 6.96*10^8 m, and its total power output is 3.85*10^26 W. find lambda-max for the Sun
explain the rules for your state lottery such as 60 balls total with 5 balls picked each drawing. use combinations to
The longest "string" (a thick metal wire) on a particular piano is 2.0 m long and has a tension of 300.0 N. What is the total mass of the wire
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