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A steel beam is placed vertically in the basement of a building to keep the floor above from sagging. The load on the beam is 6.0 104 N, the length of the beam is 3.0 m, and the cross-sectional area of the beam is 7.2 10-3 m2. Find the vertical compression of the beam.
___mm
The parallel metal plate of a capacitor is separated by a distance of 0.5cm and is connected to a 90v battery. Discover an electric field between them and the surface charge density .
NASA sends satellites to Mars by placing the satellite in a Keplerian orbit (around the sun) such that the perihelion is at the radius of the Earth's orbit, Calculate the time it takes the satellite to travel from Earth to Mars
A 72.4-kg skier coasts up a snow-covered hill that makes an angle of 23.2 ° with the horizontal. The initial speed of the skier is 8.14 m/s. What is the magnitude of the kinetic frictional force
A forearm accelerates a 3.6-kg ball at 7.0m/s^2 by means of the triceps muscle.If the lever arm is 31cm, find the force that must be exerted by the triceps muscle
Water having a density of 1000kg/m^3 is flowing with a velocity of 3 m/s through a pipe. Determine the water velocity at the restriction
A sky diver of mass 81.0 kg jumps from a slow-moving aircraft and reaches a terminal speed of 51.5 m/s. What is the acceleration of the sky diver when her speed is 30.0 m/s
Suppose you have a 9.00 V battery, a 2.2uF capacitor, and a 9.05uF capacitor. Find the total charge stored in the system if the capacitors are connected to the battery in series in C
The escape speed of a particular planet with a radius of 8.600e+6 m is 14,500 m/s. What is the mass of the planet
The motor in a refrigerator has a power of 156 W. If the freezing compartment is at 268 K and the outside air is at 302 K, what is the maximum amount of energy
A molecule of a mass m and velocity v strikes a wall and is reflected maintaing the same speed. What is the magnitude of the impulse imparted by the wall to the molecule
Two 7.0mm×7.0mm electrodes with a0.10-mm-thick sheet of Mylar between them are attached to a 9.0V battery. find the charge before and after the Mylar is withdrawn
The balloon contains 0.30mol of helium starts at a pressure of 110 kPa and rises to an altitude where the pressure is 70.0 kPa, By what factor does its volume increase
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