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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?
There are 4 charges assembled into a square 2 cm on a side, q1= 1nC, q2= 2nC, q3= 3nC, and q4= 4nC. What is the potential at the center of this arrangement
Solve the algebraic expression by using power rules.
A -10.0 nC point charge and a +20.0 nC point charge are 15.0 cm apart on the x-axis. What is the direction of the electric field at the point on the x-axis, between the charges, where the electric potential is zero
A woman and her dog are out for a morning run to the river, which is located 3.5 km away. The woman runs at 2.4 m/s in a straight line. What is the total distance run by the dog
The height of a helicopter above the ground is given by h = 3.35t3, where h is in meters and t is in seconds. How long after its release does the mailbag reach the ground
Force F = (6.0 N) i hat + (-9.0 N) k hat acts on a pebble with position vector r = (0.90 m) j hat + (-0.6 m) k hat, What is the resulting torque acting on the pebble about the origin
A wheel 65 cm in diameter accelerates uniformly from 230 rpm to 355 rpm in 7s. How far will a point on the edge of the wheel have traveled in this time.
An isotope of the element Thallium, Tl-206, undergoes beta decay with a half life of 3.1 minutes. what mass of the isotope will be left after 9.3 minutes have elapsed
An ideal gas at 11.7 °C and a pressure of 2.42 x 105 Pa occupies a volume of 3.84 m3. How many moles of gas are present
An airplane is flying with a velocity of 90 m/s at an angle of 25 above the horizontal. When the plane is a distance 126 straight above a dog that is standing on level ground, a suitcase drops out of the luggage compartment.
Two dogs pull horizontally on ropes attached to a post; the angle between the ropes is 60.7 degrees. Find the the angle the resultant force makes with dog A's rope
An particle with a charge value of 0.21 C is moving in the presence of an electric field of 5.5 N/C. What force does the particle experience
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