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An 8 Meter ladder is leaning against a frictionless wall making a 60 degree angle with the ground. A fireman whose weight is 750N is 2/3 up the ladder. If the weight of the ladder is 300N , What are the forces excreted on the ladder by the wall and the ground?
Two Carts have a perfectly inelastic collision. Cart A has mass 34.8 kg and velocity 5.08 m/s directed north immediately before the collision. What is the speed of the two carts
q1. a large tanker truck can carry 30 ton of liquid. a what volume of water can it carry? b what volume of gasoline can
A person throws a 1/2 kg brick out the window. What would be the resultant velocity of the wagon
NASA launches a satellite into orbit at a height above the surface of the Earth equal to the Earth's mean radius. The mass of the satellite is 740 kg. How much gravitational force does the satellite experience
Projectile is fired with launch angle of 60.0 degrees with a speed of 100.0 m/s at t = 0. (assume no air friction), How far from the launch point does the projectile hit the ground
Find the speed of the waves on an 800.0 mg violin string 21.7-cm long if the fundamental frequency is 912.0 Hz. find the wavelength of the sound waves emitted by the string
Suppose that a 1.00 cm3 box in the shape of a cube is perfectly evacuated, except for a single particle of mass 1.23 10-3 g. Find the average pressure on the other walls
If no, then what will happen if 30 kilocalories of heat is added to the water? Give a numerical result as part of your answer.
A 1.15-k? resistor and a 590-mH inductor are connected in series to a 1250-Hz generator with an rms voltage of 13.1V, What is the rms current in the circuit
A 1000kg elevator is being lifted vertically upward by a strong cable. What is the acceleration of the elevator
A 0.30 kg object is attached to a spring with force constant 167 N/m so that the object is allowed to move on a horizontal frictionless surface. Find the force on the object
An eyepiece of 2.1- cm focal length and an objective of 0.34- cm focal length are used in a standard microscope. What power should be marked on the eyepiece
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