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A man pushes a 2.0 kg broom at constant speed across the floor. The broom handle makes a 50 degree angle with the floor. He pushes the broom with a 5.0 N force.
a.) Sum of the forces in the y-direction. What is the value of the normal force?
b.) Sum of the forces in the x-direction. What is the value of the frictional force opposing the motion?
c.) If the frictional force were suddenly reduced to zero, what would happen to the broom?
A u-tube with constant cross section is partly filled with water. Engine oil of density 0.8g/cm3 is poured into the right arm (without mixing) until the water level rises 2.0cm. The length of the oil column is then.
A particular organic molecule forms an electric dipole by possessing an effective charge separation of 0.177 nm for a pair of ±1.60 × 10-19-C charges. find the magnitude of the molecule\'s electric dipole moment
A 8 Omega resistor is connected to a 16 V battery. What is the current through the battery
consider a 150 ohm and 180 ohm resistor connected in a parallel combination with a 9 volt battery. determine the total resistance of the parallel combination.
A concave mirror has a focal length of 20 cm. A paraxial beam of light coming from a distant object forms its image at the focal point. compute where is the final image
In open heart surgery a much smaller amount of energy will defibrillate the heart. Find the amount of stored charge
A cannon tilted up at a 25 degree angle fires a cannon ball at 81.0m/s from atop a 18.0m -high fortress wall
A metal wire 1.3mm in diameter and 1.8m long hangs vertically with a 5.4-kg object suspended from it. what is the value of the Young's modulus for the metal
you have encouraged your little sister, who has just gotten glasses for her severe near-sightedness, to give you those glasses so you can play with them. If your sister's face is 180. mm-tall, how tall will it appear to be in the image (in mm)
A solid sphere and a solid cylinder with the same mass and radius roll down an inclined plane without slipping. Which one will reach the bottom of the incline first. Explain why. Assume friction is negligible for both.
A spring of negligible mass stretches 3.00 cm from its relaxed length when a force of 7.70 N is applied. A 0.490-kg particle rests on a frictionless horizontal surface, What is the amplitude of the motion
The isotope Po (A-218 Z-84) can decay by either alpha or beta emission. What is the energy release in each case
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