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A 4.0-m-long iron bar of uniform cross section is held perpendicular to the wall by a wire from the end of the bar to the wall as shown below. If the iron bar weighs 737 N and the wire is 5.0 m long, what is the magnitude of the vertical component of force produced by the wall?
If two adjacentnatural frequencies of an organ pipe are determined to be 475 Hzand 575 Hz calculate the frequency and length of the pipe
An object with a mass of 0.427kg is attached to a long horizontal spring with a constant of 42.6kg/s2. How long does it take the the particle to move from -0.500m to 0.500m
A projectile is launched with an initial speed of 40.0 m/s at an angle of 30.0° above the horizontal. What is the straight-line distance from where the projectile was launched to where it hits its target
A puddle holds 150 grams of water. If .50 grams of water evaporates from the surface, what is the approx temperature altering of the remaining water.
A hand-pumped water gun is held level at a height of 0.61 m above the ground and fired. Find the gauge pressure of the water gun's reservoir at the instant when the gun is fired
If a cat repeatedly rubs against your cotton slacks on a dry day, the charge transfer between the cat hair and the cotton can leave you with an excess charge of -2.00 ?C. How many electrons are transferred between you and the cat
9.00 of aluminum at and 19.0 of copper are dropped into 51.0 of ethyl alcohol at. What is the initial temperature of Copper
Estimate the power radiated by the human body. Be sure to state the estimated values of all relevant quantities. You need only outline your calculations. How does this value compare with the average caloric intake for humans?
A certain traffic light is yellow for 2.70 s before it turns red. To come to a complete stop before reaching the intersection, what is the minimum distance you can be from the light when it turns yellow
a negative charge of -0.550uC exerts an upward 0.205n force on an unknown charge 0.305m directly below it. what is the direction of the force that the unknown charge exerts on the -0.550uC charge
A positively charged particle of mass 7.27E-8 kg is traveling due east with a speed of 87.0 m/s and enters a 0.250 T uniform magnetic field. The particle moves through one-quarter of a circle in a time of 2.04E-3 s, at which time it leaves the field ..
7.80-g bullet moving at 490 m/s penetrates a tree trunk to a depth of 6.3 cm. Use work and energy considerations to find the average frictional force that stops the bullet
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