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You need to know the height of a tower, but darkness obscures the ceiling. You note that a pendulum extending from the ceiling almost touches the floor and that its period is 22 s. The acceleration of gravity is 9.81 m/s2. How tall is the tower? Answer in units of m.
The pulmonary artery, which connects the heart to the lungs, is about 8.0 cm long and has an inside diameter of 5.0 mm. what is the required pressure difference over its length
When a high-power laser is used in the Earth's atmosphere, the electric field associated with the laser beam can ionize the air, At this maximum intensity, what power can be delivered in a cylindrical beam of diameter 3.98 mm
A 2 kg object is attached to a spring and placed on a horizontal, smooth surface. A horizontal force of 20.0 N is needed to hold the object at rest when it is pulled 0.200 m from its equilibrium position.
A sign for the local cheese shop is hung by two strings of length 0.25 meters at either end from a 4 meter long pole with a mass of 200 kg. what is the coefficient of static friction between the wall and the pole
You walk from your house 0.25 miles West to Fred's house, What is your displacement from your initial position
A negatively charged ball having a mass of 10 grams falls from rest in vacuum from a height of 3 meters in a uniform vertical electric field of 104 N/C. find Is the electric field pointing up or down
q1. a mountain climber in the process of crossing between two cliffs by a rope pauses to rest. she weighs 550 n. as
Suppose you hold a f=5.0 cm magnifying glass 3.0 cm from a 2.0 mm high ant. how large is the image of the ant
After a tornado, a 0.55g straw was found embedded 2.6cm into the trunk of a tree. If the average force exerted on the straw by the tree was 70 N, what was the speed of the straw when it hit the tree.
Calculate the magnitude of the electric field at the origin due to the following distribution of charges: -q at (x,y) = (a,a), +q at (a,-a), +q at (-a,-a) and -q at (-a,a)
At a given instant, the blood pressure in the heart is 1.8 x 104 Pa. If an artery in the brain is 0.37 m above the heart, what is the pressure in the artery
a uniform, upward electric field of magnitude 1.60 x 103 N/C has been set up between two horizontal plates by charging the lower plate positively and the upper plate negatively. How far horizontally from the left edge will the electron strike
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