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A mass on a string of unknown length oscillates as a pendulum with a period of 2.2s . Parts A to D are independent questions, each referring to the initial situation.
Part A What is the period if the mass is doubled? Express your answer to two significant figures and include the appropriate units.
Part B What is the period if the string length is doubled? Express your answer to two significant figures and include the appropriate units.
Part C What is the period if the string length is halved? Express your answer to two significant figures and include the appropriate units.
Part D What is the period if the amplitude is doubled? Express your answer to two significant figures and include the appropriate units.
a cross-sectional area of wire so as to produce a steady current of 5.00 mA, How many electrons passed this cross-sectional area in that amount of time
Waly Whacko claims to have invented a heat engine that will revolutionize industry. What error did he made in his choice of temperature scale
A bullet with mass 5.06 g is fired horizontally into a 2.038-kg block attached to a horizontal spring. Find the initial speed of the bullet-block system
A person who weighs 645 N is riding a 94.9 N mountain bike. what is the area of contact between each tire and the ground
A sprinter running the 100 m dash has a constant acceleration of 2.8 m/s2 for the first 4.1 seconds of the race, when he reaches his top speed, and then continues to run at that speed for the rest of the race. How long does it the sprinter to run t..
How much greater is an angular momentum of the Earth orbiting about the sun than the moon orbiting about the Earth? (Set up a ratio of angular momenta using data on inside back cover. The period of the moon is about 27.3 days.)
An automobile has a vertical radio antenna 1.00 m long. The automobile travels at 56.0 km/h on a horizontal road where Earth's magnetic field is 50.0 µT, Calculate the magnitude of this induced emf
Light is traveling in an optical medium with a refractive index of 1.55 and is incident on an interface with air. What is the critical angle for light traveling in this optical medium
A beam of protons, each with kinetic energy 40 MeV, approaches a step potential of 30 MeV. What fraction of the beam is reflected and what fraction transmitted
A uniform 34.5-kg beam of length = 4.95 m is supported by a vertical rope located d = 1.20 m from its left end as in the figure below. The right end of the beam is supported by a vertical column.
An explosive charge imparts a velocity of 10,350 feet per second to a mortar as it exits the muzzle of mortar. If the mortar is elevated at 80 degrees what are the horizontal and vertical velocities on the mortar shell.
a woman standing on a hill sees a flagpole that she know is 60 feet tall. the angle of depression to the bottom of the
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