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A man enters a tall tower, needing to know its height. He notes that a long pendulum extends from the ceiling almost to the floor and that its period is 15.5 second.
(a) Compute how tall is the tower?
_______m
(b) If this pendulum is taken to the Moon, where the free-fall acceleration is 1.67 m/s2, determine what is the period there?
_______s
A driver measures her "cold" tire gauge pressure to be 1.97 105 Pa. The measurement is made before driving, Find the final temperature of the air in the tires
a child attempts to kick a ball over a wall 5.0 m tall 30.0 m away. if the child kicks the ball with an inital velocity
A thin film of acetone (n = 1.25) coats a thick glass plate (n = 1.50). White light is incident normal to the film. Calculate the thickness of the acetone film
A hiker walks such that her initial displacement is . She then changes heading and walks by displacement . What (single) displacement would bring her back to her starting position? East = 0O; positive angles are counter clockwise.
A community plans to build a facility to convert solar radiation to electrical power. They require 3.00 MW of power, and the system to be installed has an efficiency of 30.0% (that is, 30.0% of the solar energy incident on the surface is converted to..
question a swimmer heading directly across a river 200 m wide reaches the opposite bank in 6 min 40 s. she is swept
a particle oscillates in simple harmonic motion with a period of 2.04 s and anamplitude of 4.71cm. at t 0 it is at z
Four solid plastic cylinders all have radius 2.75 cm and length 6.42 cm. Find the charge of each cylinder given the following additional information about each one.
A goose flying toward you at 13.8m/s emits a squawk, which you hear at 265Hz. Find the wavelength of the sound you hear
A 10 cm long solenoid with 222 turns and radius R = 3.00 cm has a current flowing through it of Io = 200 mA. What is the magnetic field strength inside the solenoid
A 3.0-uC point charge is placed in an external uniform electric fieldof 1.6 x 104 N/C. At what distance from the charge is the net electric field zero
A 4.20-g bullet embeds itself in a 20.0-kg block, which is attached to a horizontal spring with a force constant of 950 N/m. find the speed of the bullet just before it hits the block
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